BS 4504 - Part I

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B S I

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1

BRITISH STANDARD

4504 :

'Part 1

:

1969

UDC 621.643.4-034.669.1

SPECIFICATION

FOR

FLANGES AND BOLTING

FOR

PIPES,

VALVES AND

FITTINGS

METRIC

SERIES

Part

1. Ferrous

O

B

S

0 LES

C

E

N.f

AUG 1989

BRITISH

STANDARDS

I N S m O N

Copyright British Standards Institution Provided by IHS under license with BSI

Not for Resale No reproduction or networking permitted without license from IHS

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BS 4504 : 1969

THIS

BRITISH STANDARD, having been approved by the Mechanical Engincering Industry Standards Committee, was published under the authority of the Executive Board on 23 September, 1969.

SBN: 58005742 9

A

The Institution desires to call attention to the fact that this British Standard does not purport to incliidc all the necessary provisions of a contract.

In order to keep abreast of progress in the industries concerned, British Standards are subject to periodical review. Suggestions for improvements will he recorded and in due course brought to the notice of the committees charged with the revision of the standards to wliich they rcfcr.

A complete list of British Standards, numbering over 5000, fully indexed and with a note of the contents of each, will be found in the British Standards Yearbook. The BS Year-book may be consultcd in many public libraries and similar institutions.

This standard makes rcferencc to the following ßriiisli Standards: BS 21, Pipe threads.

BS 309. BS 310. BS 970.

Whiteheart malleable iron castings. Blackheart malleable iron castings.

Wrought steels in the form of bars, billets, and forgings,

up

to 6 in ruling section, foi. automobile and general engineering purposes. Enseries.

BS 1400;-- S c h e d u l c - o f - e o p p e r r t I l e ) c i n g o r 4 - a n d - e o y p

.

.I

BS 1452, Grey iron castings,

BS 1501. Steels for fired and unfired pressure vesscls. Plates.

BS 1501-6. Steels for use in the chemical, petroleum and allied industrics.

BS 1821. Class I oxy-acetylene welding of steel pipelincs and pipe assemblies for carrying fluids. BS 2633. Class I arc welding of ferritic steel pipework for carrying fluids. .

BS 2640. Class II oxy-acetylene welding of steel pipelines and pipe nsscniblihs for carrying fluids. BS 2789. Iron castings with spheroidal or nodular graphite.

E t s w % - - . - p -

* s a 8 ? 4 7 4 3 ~ w - e f f d - e e p p w - a l l - . . . O - . ’

BS 2971. Class I l metal-arc welding of steel pipelines and pipe nsscmblies for carrying fluids: BS 3643. I S 0 metric screw threads. Part 2, Limits and tolerances for coarse pitch series threads. BS 3692. IS0 mctric precision hexagon bolts, screws and nuts.

BS 4190. I S 0 metric black hexagon bolts, screws and nuts. BS 4320. Metal washers for general purposes.

BS b37.R Ductile iron pipes a d Vtttings.

BS 4622. Grey cast iron pipes and fittings (mctric diinetisions). 1

British Statidrirds are revised, wlieti iiecessary, by the issire eitlier oJotiicticltt~ctit slips or of revised e;l.Ìioris.

It is imporlotif that risers of British Stoti;lurtls slioirltl osrrrtciiti tliot tliiy ore irr possi*ssiori of tiie latest ntneti(lt,ients or edifiotrs.

’BS 4439. Screwed studs for gcneril purposcs.

.

.BS 4882. Bolting for Ranges and pressurecontaining piirposes.

,

*

l i 1 coiirsc of prepuriilion.

Thc following BSI references rrlutc lo ihc work o n I I . . ~ stuiidurd:

Conimiiiec refereiicc MEE/i I . MEF./I I ; I t h I l for commcnl

67!7402.

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BS 4504 : 1969

,

. .

,

. .

6 Co-opcrating organizations

. . .

.

. 5 SPECIFICATION I . 2, 3. 4. 5. ri 1. 8. 9. Scopc

. . .

Dcsignation

. . .

Flanges

.

. i , .

Hydraiilic tcsting of flangcs.

. . .

ordcring flangcs and/or bolting

.

*

Design tcmperaturc and prcssurc

.

Bolting

. . .

Attachmcnt of flanges , ,

. .

Dctails to Uc supplied by thc piircliascr t4hcn Marking

. . .

' TABLES

AI. Prcssurc/tcmpcrature ratings for steel flanges. I O A2, Prcssurc/tcmpcratiire ratings for grcy and

.mallcable cast iron and copper alloy flanges

.

13

B. Summary of contents of flange tables

.

, 14 2.5/2. Stccl wclding ncck flangcs. Nominal pressure

2.5 bar

.

,

.

16 2.513. Siccl plaic flanges for welding. Nominal 2.5/1 I . Intcgral grcy cast iron flangcs. Nominal

prcssurc 2.5 bar.

.

17 612. 6/3. 614. B / S . 616, 618. 6/l I . 6/12. 6/13. I0/2. IO/3. 1015. I0/6. I0/8. 1

o/

I I

.

,.

prcssurc 2.5 bar.

. .

.

18 Stccl wclding ncck flanges. Nominal pressure

6 b a r

.

,

.

19

Stccl plate flangcs for welding. Noiiiinal Stccl scrcwcd boss flangcs. Nominal prcssurc

6 bar ,

.

' 21

Stccl slip-on boss flanges for wclding. Nominal Stccl loose flangcs for wcldcd on lappcd

pipe

cnds, Nominal prcssiirc 6 bar

.

23 Stccl platc blank flanges: Nominal prcssure

6 bar

.

24

Iiitcgral grcy cast iron flanges. Nominal Mallcablc cast iron integral flangcs. Nominal prcssurc 6 bar

.

< I . .

.

26

Mallcnblc cast iron scrcwed boss flangcs. Nominal prcssurc6 bar

.

,

.

27 Stccl wclding ncck flangcs. Nominal pressure

IO bar ,

. .

,

.

28

Stcci platc flangcs for wclding. Nominal prcssurc IO bar

. .

.

29 Stccl slip-on boss flanges for wclding. Nominal pressure IO bar

. . .

30 Stccl loose flangcs for wcldcd on lappcd

p i p

cnds, Nominal pressurc 10 bar

.

31 Stccl plate blank flangcs. Nominal prcssurc

IO

bar

.

,

.

. . a

.

32

Intcgral grcy cast iron flangcs. Nominal prcssurc 6 bar ,

.

20 prcssurc 6 bar

.

22

prcssiirc 6 bar

.

,

.

25

prcssurc IO bar , ,

.

33

P

16/1, Integral steel flanges. Nominal pressure

16bar

. . .

1612. Steel welding neck flanges, Nominal pressure

16bar

. . .

1613, Steel plate flanges for welding. Nominal i6/4. Steel screwed boss flanges. Nominal pressure

16 bar

. . .

16/5. Steel slip-on boss flanges for welding. Nominal 16/8. , Steel plate blank flanges. Nominal pressure

16bar

.

* .

. .

16/11. Integral grey cast iron flanges. Nominal 16/12. Mallcable cast iron integral flanges. Nominal

pressure 10 bar and i 6 bar

. . . .

16/13. Malleable cast iron screwed boss flanges.

Nominal pressure 10 bar and 16 bar

.

46/21: Intcgral copper-.-alloy .- flangesr-Nominal 25/1. Intcgral stcel flanges. Nominal pressure 25 bar 25/2. Steel welding neck flanges. Nominal pressurc

25 bar

. . .

25/3. Steel plate flanges for welding. Nominal 25/5. Steel slip-on boss flanges for welding. Nominal 25/8.. Steel plate blank flanges. Nominal pressure

25bar

. .

, ,

. .

25/11. Integral grcy cast iron flanges. Nominal 25/12. Mailcablc cast iron integral flanges. Nominal

prcssurc 25 bar

.

25/13. Mallcablc cast iron screwed boss flanges. Noniinal pressure 25 bar ,

.

25/21;-.lntcgrnl copper -alloy flanges. Nominttt

40/1, Integral stccl Rangcs. Nominal prcssurc 40 bar 40/2. Stccl welding ncck flanges. Nominal pressure

40 bar

. . .

40/3. Stccl platc flanges for welding. Nominal 40/4. Stcel screwed boss flanges. Nominal pressure 25 barand40 bar

.

,

.

,

.

40/5. Stcel slip-on boss flanges for welding, Nominal prcssure 40 bar

.

e . .

40/8. Stccl plate blank flangcs. Noniinal pressure 40bar

. . .

.40/2~~ntegral--copper~-silIoy-- flanges.---Nominat 64/1. Integral stcel flanges. Nominal prcssiirc 64 bar 64/2. Steel welding ncck flangcs. Nominal pressure

64 bar

. . .

64/3. Stcel plate .flanges for welding. Nominal

pressure

64

bar

. . . .

64/4. Steel screwed boss flanges. Nominal pressure

6 4 b a r . .

. . .

lOO/l. Intcgral steel flanges. Nominal pressure

100 bar

.

pressure 16 bar

. . .

pressure 16 bar

. .

. . . .

pressure 16 bar

. .

. . . .

0 .pressUrel6 bar-,- r -

--

.-

..

pressurc 25 bar ,

.

,

pressure 25 b a r .

. . .

prcssurc 25 bar

.

pr~ssure-25 bar-.-

.--

- -

.

- I - - ,-

.

pressure 40 bar

.

,

. .

..pressure 4 bar-<--. . ,..- . - a

- - -

.- . - ..-,

. .

-.. 'age 34 35 36 37 38 39 40 41 42 43-

44

45 46 47 48 49

so

51 -52 53 54 55 56 57 58 .59. 60 61 62 63 64 3

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0277983 5

BS 4504 : 1969

p a p

lOO/2, Steel welding neck flanges. N o r h a 1 pressure

1OO/3, Steel plate flanges

for

welding. s o m i r i a l

l00/4. Steel screwed boss flanges. Nominal pnssure

160/1. Intcgral steel flanges. Nominal pressurc 160/2. Steel welding neck flanges. Nominal pressure 160/3. Steel plate flanges f& welding. Nominal

1 0 0 b a r .

. . .

. 6 5 pressure100bar

. . .

66 100bW

.

a 67 160bar

. . .

68 160bar

. . .

69 pressure160bar

. . .

70 Page 2 5 0 b a r .

. . .

. 7 1 250 bar

. . .

72 320 bar

. . .

.

73 320brri

. . .

74 4 û O b a r .

. . .

.

75 4ûObar

. . .

76

250/1. Integral steel flanges. N&inal pressure 250/2. Steel welding neck flangcs. Nominal pressure 320/1. Integral steel flanges. Nominal pressure 320/2. Steel welding neck flange% Nominal pressure

&û/i. Integral steel flanges. Nominal pressurc

400/2. Steel welding neck flanges, Nominal pressure

4

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0277984

7

BS 4504 : 1969

CO-OPERATING ORGANIZATIONS

The Mechanical Engineering Industry Standards Commjttec, under whose supervision this British Standard was prepared, consists of representatives from the following Government. departments and scientific and industrial organizations:

*Associated

Offices'

Technical Committee *Association of Consulting Engineers

-

_. _.

*Institution

of

Civil Engineers *Institution of Gas Engineers *Institution of Mechanical Engineers . Institution of Mechanical Engineen Institution of Production Engineers Association of Mining Electrical and Mechanical . . p. Institution of

Engineers Board of Trade

British Chemical Plant Manufacturers'

Association (Autamobile Division)

Association Association of Great Britain

British Gear Manufacturers' Association London Transport Board

.

British Internal Combustion Engine

*British Mechanical Engineering Federatioli British Pump Manufacturers' Association *British Steel Industry

Crown Agents for Oversea Governments and

and Ventilating ~~~i~~~~

*British Cornprcssed Air Society

*British Electrical and Allied Manufacturers'

-

Locomotive and Allied Manufacturers'

Machine Tool Trades Associaion Ministry of Defence

Ministry df Defence, Army Department Ministry of Power

Ministry of Public Building and Works

.

Manufacturers' Association

Administrations _{Ministry of Technology} (H.M. Factory Inspectorate) _Laboratory

'Electricity Council, the Central Electricity Generating Board and the Area Boards in England and Wales

*Engineering Equipment Users' Association

Of and

Productivity

*Ministry of Technology-National Engineering Ministry of Transport

National Coal Board

National Physical Laboratory (Ministry of Royal Institute of British Architects

Gas Council Technology)

Institute of Marine Engineers

The Government departments and scientific and industrial organizations marked with

an

asterisk in the above list, together with the following, were directly represented on the committee entrusted with the fireparalion of this British Standard:

Black Bolt & Nut Association of Great Britain British Malleable Tubc Fittings Association British Valve Manufacturers' Association British Waterworks Association

Copper Development Association Institute of British Foundrymen Institution of Water Engineers Lloyd's Register of Shipping Metropolitan Water Board

Ministry of Defence, Navy Department National Association of Drop Forgers and North East Coast Institution of Engineers and Tank and Industrial Plant Association The Welding Institute

Water-Tube Boilermakers' Association Manufacturers of Pipes and Flanges

Stampers Shipbuilders

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BS 4504 : 1969

BRITISH STANDARD SPECIFICATION

FOR

FLANGES

AND BOLTING FOR PIPES,

VALVES'

AND 'FITTINGS. METRIC SERIES

_, _, .

.

...

-

--'FOREWORD

__

. - _.

h

SHOULD-BE.NOTED THAT. AT-THE TIME ÖF ISSUING <HI; AMENDMENT, PROPOSALS A R E

UNDER CONSIDERATION WITHIN CEN/WG 74, FLANGES, EFFECTJVELY RECOMMENDING THAT

THE USE OF DIN-BASED FLANGES IN.BS 4504 BE LIMITED TO A M A X I M U M PRESSURE m.40 BAR,

IF THESE PROPOSALS ARE AGREED AND RESULT IN THE PUBLICATION OF A EUROPEAN

STANDARD, BS 4504 WILL BE AMENDED ACCORDINGLY. ~

-

.

L -

This British Standard has baen prepared under the direction of the Mechanid Engineering Industry Standards Committee and is ohe of those intended for use

by

industry

as

it adopts the metric system.

Before 1939 the I.S.A. (International Federation of the National Standardization Associations) prepared bulletins for:

European

Standardization and in 1940, Bulletin 5%

'

Pipes and connections

*,

was circulated, and this has been reflected in the national standards of European countries since that time.

On the formation of the I S 0 (International Organization for Standardization) Technical Committee 5,

'

Pipes and

fittings

',

set up subcommittees to deal with pipes and flanges and recommendations have been published for 'pipes as follows:

ISO/R 7. Pipe t h r a d s for gas list tubes and screwed fittings where pressure-tight joints are made on the threads (% i n '

to 6 in). (BS 21 is in accord.)

ISO/R 13. Cast iron pipes, spcial castings and cast iron parts for pressure main lines. ISO/R 64. S e l tubes. Outside diameters. (The appendices to BS 36014

are

in accord.)

ISO/R 65. Steel tubes suitable for screwing in accordance with I S 0 Recommendation R 7. (BFf387 is in accord.)

ISO/R 134. Non-screwed steel tubes for general purposes (2nd edition).

ISO/R 221. Steel tubes. Thicknesses. (The appendices to BS 36014 are in accord.)

ISOjK 228. Pipe threads where pressure-tight joints are not made on the threads (% in to 6 in).

ISO/R 336. Plain end steel tubes, welded

or

seamless, General table of dimensions and masses

per

unit length.

Tho

I S 0 TC5 subcommittee concerned with the standardization of flange dimensions was unable to come to any agreement

as

the ISA, ASA and BS 10 flange dimensions were not compatible.

Since the publication of the 180 recommendations mentioned above European national standards organizations' have

been

revising their flange standards

to

bring the flange to pipe connecting dimensions into accord with Recommendations N64,and R/336. The German Standards Association (DNA) has made much progress in this field.

British Standard ont them. Acknowledgement is here made for the co-operation extended

by

the DNA. The mating dimensions in this standard are therefore in accord with European practice. However, the pressureltemperature ratings given in Table AI have been adjusted to take advantage of the long term testing and long experience of the

BS

10' ratings It is the practice in Europe

to

use steel welding neck flanges for all pressure/temperature ranges. Plate flanges are more; commonly used in the

UK

and

are

therefore included in this standard.

4

~

\ _{The BSI}committee _{reviewed the ISA flange tables and particularly the German}_DIN_{standards and has modelled this}

AJ alfered fot W b o n S t d flanges.

'an"ory 19''

This British Standard incorporates current European practice, It should be noted that there are some European stnnd-

ards for cast iron pipes based

on

ISO/R 13, 'Cast iron pipes, special castings and cast iron parts for pressure lines ', t h e

flange dimensions of which differ marginally from those given in Tables lO/ll and 16/11 but these differences do not

'affect mating dimensions. It is intended to develop ductile cast iron flanges to the ISA bulletin mating dimensions and in

add them to this standdrd in due-course.

'NOTE 1. Rcssurci in this standard am liven in bar (gauge) 1 b u = 10 N'hi'.

NOTE 2. All dimensions throuihout this standard am in mill¡melms unless othcrwiw stated.'

BS 10,

'

Flanges and bolting for pipes, valves and Rttinp

*.

Q

A i olrrrrd 1971

. .

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DS 4504 : 1969

SPECIFICATION

Details for ductile iron pipesand ductile iron pipe fittings are specified in

BS

4772. Immediately after this new sentence insert the following new paragraph:

Detailsol flanges for grey iron pipesand grey iron pipe fittings are specified in BS 4622-

A t addrd

A

Frbruary 1972

January 1972

and

The types and materials of gaskets used shall be agreed . between the purchaser and the manufacturer.

1.1 SCOPE

This British Standard specifies requirements for circular .

flanga of the following types and materials with the appropriate batting :

Integral: steel, Welding neck: steel.

Plate: steel.

Screwed boss: steel and malleable cast iron: Slip-on

boss:

steel.

Loose for welded on lapped

pipe

ends: steel.

.

Blank: steel.

cast iron, malleable cast iron

6-

Q

For

the purpose of interchangeability in the mating of flanges, the dimensions which relate to the outside diameter of the flange, pitch circle diameter of drilled holes, and the number and size of bolts, shall apply regardless of the materials from which the flanges are manufactured, It should be noted, however. that full face gaskets are necessary for copper alloy integral flanges up to 100 mm nominal diameter.

NOTE I. The term plate Bange ' indicates the shape or the flange. Such flanges are not necessarily made from steel plaie but may be made from forged or cast steel.

NOTE 2. The term ' integral flange applies to flangc2in'cgrd wilh pipes, valves rind things.

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2. DESIGN

TEMPERATURE

AND

PRESSURE

The temperature end pressure ratings given in Table AI and A2

arc

design pressures and temperatures for the materials listed. Where there is an appropriate application standard it is the responsibility of the purchaser to ensura that the des.@ pressure and temperature stated comply with the requirements of that standard.

The pressure ratings for materiais other than grey cast iron am applicable t o installations subject t o moderate shock such as may m u r in well designed and efficiently operated boiler feed mains. Where

a

system may

be

subject to severe shock it is the responsibility of the purchaser t o make a suitable allowance when stating the design pressure.

The pressure rating for grey cast iron flanges, where such are used in pipelines containing water, are for non- shock conditions. Where moderate shock (such as may

I

occur

in

an efficiently designed and operated boiler feed main) is likely to be present, the pressure and temperature rating should be reduced by 25

%.

3. DESIGNATION

The flanges shall be designated by the nominal sizC and flange table reference.

The first part of the table referena is the nominal pressure<Pl.r),

’

_{The second part of the table reference indicates the}

material and type of flange as follows:

1. Steel-integral.

2. Steel-welding neck. 3. Steel-plate for welding. 4. Steel-screwed boss. 5. Steel-slip-on boss.

6. Steel-loose for welded-on lapped pipe ends. 8. Steel-blank plate.

11. &ey cast iron-integral. 12. Malleable cast iron-integral.

13. Malleable cast iron-screwed boss.

4. FLANGES

4.1 Materials. Materials shall be. those given in Ta-iles A and A2 except that alternativc materials may be used provided that their mechanical properties are not inferior at the operating temperature. Where there is an appropriate application standard i t is the responsibility of the purchaser to ensure that the materials comply with the requirements of that standard. In this respect attention is drawn to

BS

806 and BS 759,

Certified materials are specified for carbon steel flanges for use at temperatures in excess of 400°C ynd recorn= mended for alloy steel flanges for use at temperatures in excess of 475°C. Representative elevated temperature tests at the temperature or temperatures specified by the purchaser shall not be required for material specified t o the order provided the manufacturcr has obtained ccrti- fication approval for thc supply of matcrial covcîxd by thc relevant material spccification, following the procedure described in BS 3920, which lays down conditions undcr wliich he shall denionstratc thut ihc siccl in questioh consistently has ihe properties specified in the relevant

maferial specification.

.

₇

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1624669 0277988

4 _I

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Turning

Other than tiirning

.

..-

4.2 Machining of flanges.

iim pin Irm

12.5 500 50 1087.5 N.10

3.2. 125 12.5 1022.85 N.8

4.2.1 All flanges shall be free froni laminations and surface defects. 4.2.2 Flanges shall be finished as follows.

( i ) All flanges shall have their jointing surfaces machine finished, The finish,of jointing surfaces up to and including PN 40 shall not be coarser than given in the following table appropriate to the method of machining. For flanges

. above

PN

40 i t is recoinmendcd that ihc surface finish should comply with the rcquirements of BS 1560.

hlclhod of mnrhlnlng

1

R .

I

R.=

1

Rr ' ,

I

Grade ref. R S l l 3 4

' A

NOTE. Thc term 'tiirning' ixludes any method oîmuchining producing conccniric or spiral grooves.

(I)

Flange outside diameters may be unniachined unless a machine finish is specified by the purchaser.

(3) Unlcss otherwise specified by the purchaser, all bolt holes shall be drilled, shall be equally spaced on the pitch

(4) Bearing surfaces for nuts shall be parallel to the flange jointing face within I O..

I

circle diameter and, in the caw of integral Ranges. shnll be drilled off-centre.

4.3 Tolerances on Bange &meter, thickness and length of weldlng necks

.

Flanges shall be subject to the following tolerances.

4.3.1 Outside diameter (O)

N q t Machined machined Up to 200 inclusive f l &2 Over 200 to 300 inclusive f l . 5 *2 Over 300 to 400 inclusive

f2

*3 Over 400 f 2

d 3

43.2 Thickness (b)

43.2.1 Flanges integral with valves and fittings (other than forged stee) Thickness

up

to IO Over 10

up

to 20 inclusive Over 20

up

to 30 inclusiva Over 30

up

to 50 inclusivo Over 50

up

to 70 inclusive Over 70

up

to 100 inclusive Over 100 Machined at back +1*5 -0 +2-o -0 3-23 -0 +3*0 -0 3-4.0 -0 3.5.0 -0 +7*0 -0 No! mnchined at back 3-2.5 -0 +3-5 -0 +4*5 -0 +6*5 -0 t a s 5 -0 3.104 -0

+

14.5 -0

4.3.23 Flanges not integral with valves and fittings and

forged

steel

integral with valves and fittings.

Not Thkknesr Machined machined

at back at back I -0 -0 +3 3.5

-0

-0 Up to 35 inclusiva +les f 3 Over 35

a Ductile iron pipo filtlngs and accessories for pteuure pipelines

:

(In course of preparntion.)

For tolerances on grey cast iron pipes with flanges scs BS 4622

' Grey erst iron pipes and fillings (iiietric dinipnsions) I .

-

Q

A i alrered January i972

A

AI O d d d Frbruary i972

A

-

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_{L b 2 4 b b 9}

_0277989

_b

_m

BS

4504 : 1969

4.33 Leqyerh of welding neck ßmge (hi)

Machined

Up to 80 nominal size inclusive _{f l . 5} Over 80 to 250 nominal

size inclusive f 2

Over 250 nominal site f 3

Ar alrered January I972

A

Q

A

4.4 Joint faces

4.G.l The standard form ofjoint face for flanges covered by

this specification shall be as follows:

(t

1

cast iron integral flanges shall have raised joint faces as shown in the tables unless specified otherwise by the purchaser.

(2) Malleable cast iron screwed flanges shall have flat joint faces.

(3) Steel flanges shall have raiscd joint faces except that blank flanges may be flat faced or have a spigot at the option of the manufacturer.

4k.2 Where i t is impractical for tlie manufacturer to

provide a raised joint facc on cast iron o r steel Ilanges the flange may be flat faced, its tliickncss being in accordance with the values specified for dimension 'b' clscwhere in this standard.

6. ATTACHMENT OF FLANGES

6.1 The method of securing flanges (othcr than inteprii; tlanges) to pipes and fittings shall be in accordance with the appropriatc applicatlon standard. Where there is no application standard the method of attachment shall tx the subject of agreement between the purchaser and the

manufacturer.

6.2 Flanges shall be prepared for attachment to pipes as follows.

6.2.1 ScrewedJunges. Screwed flanges shall be screwed in

accordance with the appropriate table (see Clause 8.

item (5) ì.

6.2.2 Sfeei plate and steel slip-on 60ss~%7nges. Steel platc

and steel slip-on boss flanges shall be machined in tlie borc

to a diameter to be specified by the purchaser and suirablc

for welding to form one of the types in the appropriatc application standard as required by the purchaser. Tlic purchaser shall speciiy the weid preparation required.

6.2.3 Welding neckflanges. Welding neck flanges shall tx

machined in the bore to a diameter to be specified by thc

purchaser, and suitably prepared for welding to pipes an2

fittings. The thickness of the portion.of the flange whicl- connects it to the pipe shall be not less than the p i p thickness nor more than 3 mm thicker.

6.2.4 Looseflanges. Loose flanges shall he machined ir

accordance with the appropriate table.

--

4.rc.3 I t is thc rcsponsibility of ihc user to sclcct gasket material which is suitable for the fluid at the intended working tenipcraturc and prcssurc conditions.

5. BOLTING

Material8 and threads. The design temperature and pressure ratings given in Tables A l and A2 are for the bolting materials listed. Alternative materials may be used provided their mechanical properties are not inferi0.r at the operating temperature. . -

5.1.2 The diiiicnsions and finish of studs arid hexagon hcadcd holts with hexagon niits shall coniply wiíli the requirements of OS 3692, BS 4 190 or RS 4439 as iippropriiile.

5.1.3 The diiiiensions and finish of stiid bolts with hexagon nuts shall comply with ihc rcquircments of ES 4882:

1973, Scctioiis I aiid 2.

5.1.4 S t u d bolls may bc of the foriiis shown in BS 4882 exccpt that forni 'b' applies only to stud bolts of othcr than

illloy stccl.

5.1.5 Frcc cutting stcels for studs. bolts. stud bolts and nuts shall only be perniillcd when spccificd by ihc piirchascr, und their iisc shiill bc rcstrictcd to thc tenipcratiirc range -10 "C to 100

"C

for noininal prcssiircs tip l o and including

IO ber,

5.1.6 Whcrc washers arc uscd they shall bc of an appropriutc iiiiitcrial and their dimcnsions shall coniply with the

rcqiiirciiicnts ofTul>lc 3 of HS 4320:1968.

Siiindard Muck noriiiul scrics wushcrs coniplying with thc rcqiiircnlcnts of nS 4320 may be iiscd for thc tcinpcrutiirc rungc

-

30 "C to 2M "C.

I

_*

BS 3692,

'

I S 0 rnelric precision hexagon bolts, scre\va niid 111:'

t ES 4190,

'

I S 0 mciric black hexagon bolts, screws iitiil 11111s.

BS 3643, ' IS0 mciric x r i c s threads,*. Pari 2, ' I.tniii\

tolerances for coursc pitch scrici threads

.

~ ~ i d l wiislicrs lor gcncrul cnginccring piiriww-

4320,

(11)

--`,``-`-`,,`,,`,`,,`---B S I

B S * 4 5 0 4 :

**PART*I,**

b 9

l b 2 4 b b 9 0277990 2

BS

4504

:

Part

i

:

It/!

- 1

7, HYDRAULIC TESTING OF FLANGES

This standard does not specify the hydraulic test pressures for flanged pipes or components, details of which should

be obtained from the appropriate standards which specify test pressures for

pipes

or components, but the test pressure applied to the joint shall not exceed 1-5 times the nominal pressure for the flanges.

'

A

8. DETAILS TO BE SUPPLIED BY THE PURCHASER

WHEN ORDERING FLANGES

AND/OR

BOLTING

The following information shall be supplied by the purchaser when placing an order or making an enquiry:

(1) Nominal size, nominal pressure, type of flange (see flange tables) and material (see Tables A l and A2).

(2) Whether test certificates of .the material are (3) Details of bolting (if required) (see C l a w 5).

(4) Details of the machining for the attachment of

( 5 ) Whether taper

or

parallel screwing is required (sce

(a) Whether flanges are to be machined (sec 4.2G4.3)

*I

required.

flanges (see Clause 6).

6.2).

A

9. MARKING

Flanges made of alloy steel shall be clearly marked so that the material from which the flange is made can be identiRed, except that integral flanges need not be marked where the component itself is marked.

(12)

--`,``-`-`,,`,,`,`,,`---E S 1

B S * 4 5 0 4 :

**P A R T * 3**

69 3624669 0277993

4 a

(13)

--`,``-`-`,,`,,`,`,,`---B S I

**BS*q504:**

**PART*KL 6 9 W L b 2 4 b b 9**

0277992

b

.&.-*-

--.--..

.

t

.*

LB f I I

(14)

--`,``-`-`,,`,,`,`,,`---BSI

B S * 4 5 0 4 :

**PART*KL 6 9**

3 6 2 4 b 6 9

0277993

B

=

12

(15)

--`,``-`-`,,`,,`,`,,`---B S I

B S * 4 5 0 4 :

**P A R T * 1**

69 m

1624669

0277994 T

m

-. ... . . . . <

.

t ,+ M I '

(16)

--`,``-`-`,,`,,`,`,,`---d

i?

:

w

BSI

**BS*4504:**

**P A R T * L**

69 m

1624669

O277995

L

m

14

(17)

--`,``-`-`,,`,,`,`,,`---BSI

B S * 4 5 0 4 :

PARTUL

69 L b 2 4 6 6 9

0277996

3

4

4 BS

4504 : 1969 1 , r

I

I i , -)r. I5

(18)

--`,``-`-`,,`,,`,`,,`---B S I --`,``-`-`,,`,,`,`,,`---B S 8 4 5 0 4 :

**PART*KL**

69

L b 2 4 6 6 9

O 2 7 7 9 9 7

5 =

BS 4504 : 1969 Ø A i rlrrrrd Marrh. 1971 TABLE

B.

SUMMAR

Q

A

/

OF

CC JTENTS ~ mm

l i

6 8 10 j, 15 20 25 32 40 50 65 80 100 125

$

150 2 '200 175

3

250

3

300 350 400 450 500 600 700 900

--

8 0 0 . lo00 7 1200

x

1400 X 1600

x

1800

x

2Ooox 2200 2400 2600 2800 3Ooo 3200 3400 3600 3800 4ooo

(19)

--`,``-`-`,,`,,`,`,,`---BSI

B S * 4 5 0 4 :

P A R T r 1

69 1624669 0277998

7

ES 4504 : 1969

(20)

--`,``-`-`,,`,,`,`,,`---BS

4504 : 1969

----

1375 26 1575 26 17% 26 1990 26 21% 26

TABLE

2 q 2 . STEEL

WELDING

NECK

FLANGES Nomind

press&

2.5 bar (1 bar = 10' N/my

.

NOTE, For nominal iIzes 10 to loo0 usa Tablo 6/2,

1200 1400 1 ô W 1800

2000

1

For weld

preparation see

B.S 2633 and B.S.2971 or B.C. 1821 and B.C.2640 1220 1420 1620 1 m 2020

"

I

M27 32 30 1320 1245 16 16 M27 36 30 1520 1445

1

16 16 M27 40 30 1730 1645 20 16 M27 44 30 L 1930 1845 20 16 M27 48 30 2130 2045

I

22 16

(21)

--`,``-`-`,,`,,`,`,,`---BSI

B S * 4 5 0 4 :

**P A R T * 1**

69 1624669 0278000

T

=

BS

4504 : 1969 1375 1575 1790 1990 2190

TABLE 2.5/3. STEEL

PLATE

FLANGES FOR WELDING

Nominal

pressure

2-5 bar (1 bar =

lo8

N/mv

NOTE. For nominal i h s IO to loo0 uso Table 6/3.

30 1320 36 30 1520 30 1730 30 1930 32

I

*/

36 1280 5 M27 42 1480 5 M27 46 1 690 5 M27 52 i 890 5 M27 58 ' 2090 5 M27 ; 48 30 2130 i Nom. size 1 200 1400 1600 1800 2000 1 220 1420 1 620 2 O20 i a20 I l I

(22)

--`,``-`-`,,`,,`,`,,`---BSI

B S * 4 5 0 4 :

**PART*L b î**

3 b 2 4 b b î 0 2 7 8 0 0 3 3

4 1250 1452 1654 1856 2 056 I BS 4504 : 1969 r

---

8 8 10 10 10 Nom #lu 1375 1 575 1790 1990 2 190 2 405 2 605 2 805 3030 3 230 3 430 3 630 3 840 4 045 4 245 1200 1400 1600 1800 2000 30 30 32 34 34 36 38 40 42 42 44 46 48 48 50 2 200 2400 2600 2800 3000 3200 3400 3600 3800 4000 M27 M27 M27 M 27 M27

TABLE 23/11.

**INTEGRAL*GREY**

CAST IRON FLANGES Nominal

prekure

2.5 bar (1 bar = 10'

N/d)

NOTE. For nominal alzes 10 to loo0 usa Table 6/i 1.

32 I 30 36 i 30 40

'

30 44 30 48 30 ' 2868 3068 3 268 3 472 3 676 3 876 4 076 Raked face 12 12 12 12 12 12 12 4 1280 1 490 1 690 1 890 2090 2 295 2 495 2 695 2 910 3 110 3 310 3 510 3 720 3 920 4 120

A

IJOTE.

A l t e r n a t i v e neck form,

shown

fm.5 5 5 5 5 5 6 6 6 6 6 6 6 6 6 6 k 1 320 1 520 1730 1930 2 130 2 340 2 540 2 740 2960 3 160 3 360 3 560 3 770 3 970 4 170 Neck

d o t t e d , t o have

a maximum

d r a f t

a n g l e of

12'

(23)

--`,``-`-`,,`,,`,`,,`---,is olrrrcd Aiirrrh, 1971 Nom. SlZe

-~

10 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450

.m

600 700 800 903 loo0 1 200 1400 1600 1800 2000 Pipe 0.d. di 17.2 21.3 26.9 33.7 42.4 48.3 6093 70-1 88.9 114.3 139.7 168.3 219.1 273 323.9 355.6 406-4 45712 508 609g6 711.2 812.8 9 1414 1016 1220 1420 1 620 1 820 2 O20

-

BSI

BS*4504:

**P A R T * l 6 9**

l b 2 4 b b î

0278002 3

TABLE

6/2. STEEL WELDING NECK FLANGES

Nominal pressure 6 har (1 bar = lo8 N/m*)

For weid preparation SPG

B.S.2633 and B.S.2971 or B.S. 1821 and B.S.2640 I I J as BDDI

m r

I D 75 80 90 100 120 130 140 160 190 210 240 265 320 s'I5 440 490 540 595 645 755 975 1075 1175 1405 1 G x ) 1830 2 045 2 265 _I_ Hange

-

b

-

12 12 14 14 14 14 14 14 16 16 18 18 20 22 22 22 22 24 24 24 24 24 26 26 28 32 34 36 38

-

h 28 30 32 35 35 38 38 38 42 45 48 48 55 60 62 62 65 65 68 70 70 70 70 70 90 90 90 100 110

--

-

Ralsec 4 35 50 60 70 80 90 110 128 148 178 202 258 312 365 415 465 520 570 670 775 880 980 1080 1295 1510 1710 1 920 2 125 40. IC0

-

f 2 2 2 2 2 3 3 3 3 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5

-

Bolting M 10 M10 M10 M 10 M12 M12 M12 M12 M 16 M 16 M16 M 16 M16 M16 M20 M20 M20 M20 M20 M24 M24 M27 M27 M27 M30 M33 M33 M36

M

39 Neck

-

No.

-

4 4 4 4 4 4 4 4 4 4 8 8 8 12 12 12 16 16 20 20 24 24 21 28 32 36 40 44 48 DriUIi di 11 11 11 11 14 14 14 14 18 18 18 18 18 18 22

n

22 22 22 26 26 30 30 30 33 36 36 39 42

-

h 50 55 65 75 90 1cO 110 130 150 170 200 225 780 335 395 445 495 550 600 705 810 920 1 O20 1 120 1340 1560 1 760 1 970 2 180 BS 4504 di 26 30 38 42 55 62 74 88 102 130 155 184 236 290 342 385 438 492 538 640 740 842 942 1045 1248 1452 1655 1 855 2 058

-

hi

-

6 6 6 6 6 7 8 9 10 10 1c 12 15 15 15 15 15 15 15 16 16 16 16 16 20 20 20 20 25

-

r

-

4 4 4 4 6 6 6 6 8 8 8 10 10 12 12 12 12 12 12 12 12 12 12 16 16 16 16 16 16 21

(24)

--`,``-`-`,,`,,`,`,,`---B S I

B S * 4 5 0 4 :

**P A R T * l**

b î

=

l b 2 4 b b î

0278003

5

ils 4504 : 1969

TABLE

6/3.

STEEL

PLATE

FLANGES

FOR

WELDING

Nominal pressure 6 bar (1

bar

= lo6 N/m*)

A i altrird March, 1971 Nom. aim 30 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900 1000 1200 1400 1600 1800 2000

A

17.2 21.3 26-9 33.7 42.4 48.3 60.3 76.1 88.9 114.3 139.7 168.3 219.1 273 323.9 355.6 406 *4 457.2 508 609.6 711.2 81243 914.4 1016 1 220 1420 1620 1820 75 80 Co 100 120 130 140 160 190 210 240 265 320 375 440 490 540 595 645 755 860 975 1075 1175 1 405 1630 1830 2 045 2020

I

2265 12 12 14 14 16 16 16 16 18 18 20 20 22 24 24 26 28 30 30 32 34 38 42 46 56 66 74 84 92

1

2125 35 40 50 60 70 80 90 110 I Zf? 148 178 202 258 312 365 415 4 6 520 570 670 775 880 980 1080 1295 1510 1710 1 920

f

I

2 2 2 2 2 3 3 3 3 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 M10 M 10 M10 M10 M 12 M12 M 12 M 12 M16 M16 M16 M16 M16 M16 M20 M20 M20 M20 M20 M24 M24 M27 M27 M27 M30 M33 M33 M36 M39 No. 4 4 4 4 4 4 4 4 4 4 8 8 8 12 12 12 16 16 20 20 24 24 24 28 32 36 40 44 48 Drüüng 11 11 ' 11 11 14 14 14 14 18 18 18 18 18 18 22 22 22 22 22 26 26 30 30 30 33 36 36 39 42 ~- h 50 55 65 75 90 100 110 130 150 170 200 225 280 335 395 445 495 550 600 705 810 920 1 o20 1120 1340 1 560 1760 1970 2 180 22

(25)

--`,``-`-`,,`,,`,`,,`---B S I

B S * 4 5 0 4 :

**P A R T * 2**

67 2624667 O278004

7 m

10.2 13.5 17.2 21.3 26.9 33.7 42.4 48.3 60.3 76.1 88.9 114.3 139.7 165.1

TABLE 6/4, STEEL SCREWED BOSS FLANGES

, Nominal pressure 6 bar (1 bar =

lou

N/rn')

Ali dimendom am In millimetres (exœpt tho inch nomlnal alzo column). Scmwd to ES 21,

'

Pipo threads

'.

65 70 75 80 90 100 120 130 140 160 190 210 240 265 Nominal a h 18 18 20 20 24 24 26 26 28 32 34 40 44 44

34 w

96

?4

94

1 1% 1% 2 2% 3 4 5 6 25 30 35 40 50 60 70 80 90 110 128 148 178 202 mm 6 8 10 15 20 25 32 40 50 65 80 100 125 150

-

b 10 10 12 12 14 14 14 14 14 14 16 16 18 18

-

I

Rihedface

---

. h

I

4

-

f 2 2 2 2 2 2 2 3 3 3 3 3 3 3

-

Bolting M10 M 10 M 10 M 10 M10 Ml0 M12 M12 M12 M 16 M16 M16 M16 Ml2

diameter

-

No. 4 4 4 4 4 4 4 4 4 4 4 4 8 8

-

90 100 110 130 18 150 18 170 18 200 18 225

BS

4504 : 1965 18 22 25 30 40 50 60 70 80 100 110 130 160 185

-

(26)

--`,``-`-`,,`,,`,`,,`---BSI

B S * 4 5 0 4 :

**PART*:L**

6'7

=

L b 2 4 b b 9

0278005 9

cS 4504 : 1969

TABLE

6/5. STEEL SLIP-ON

BOSS

FLANGES

FOR

WELDING Nominal

pressure

6 bar (1 bar = 10' N/m3

Nom. size 6 8 10 15 20 25 32 40 50 65 80 100 125 150 200 250 300

N

N 10.2 13.5 17.2 21.3 26.9. 33.7 42-4 48.3 60.3 76.1 88.9 114.3 139.7 168.3 219.1 273 323-9 D 65 70 75 80 90 100 120 130 140 a 160 190 210 240 265 320 375 440 Flange b 10 10 12 12 14 14 14 14 14 14 16 16 18 18 20 22 22

-

h dr 18 25 18 30 20 35 20 40 24 50 24 60 26 70 26 80 28 90 32 110 34 128 40 148 44 178 44 202 44 258 44 312 44 365 f 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 4

-

t

1 -

Y

Bolting M 10 4 M10 4 M10 4 M 10 4 MlO 4 M 10 4 M12 4 M12 4 M12 4 M12 4 M16 4 M16 4 M16 8 M16 8 M 1C 8 M 16 12 M20 12 Driülng

I

Boss dl 11 11 11 11 11 11 14 14 14 1 4 18 18 18 18 18 18 22

-

h d l - - ~ -40 18 15 22 50 25 55 30 65 40 75 . 50 90 60 100 IO 110 80 130 100 150 110 170 130 200 160 225 185 280 240 335 295 395 355 1

(27)

--`,``-`-`,,`,,`,`,,`---B S I

B S * 4 5 0 4 :

**P A R T * &**

69 Lb24669 0278006

O

W

Bolting M 10 M10 M10 M 10 M12 M12 M 12 M12 M16 M16 M16 M16 M 16 M16 M20 M20 M20 M20 M 20 M 24 M 24 M27 M27 M27 M30 AI alrrrrd .ilarrh, 1971

--

Nom. size

-

No. 4 4 4 4 4 4 4 4 4 4 8 8 8 12 12 12 16 16 20 20 24 24 24 28 32 10 15 20 25 32 40 50 65 80 100 125 150 3 3 250 300 350 400 450 500 600 700 800 933 loo0 1 200 35 40 50 60 70 80 90 110 128 148 178 202 258 312 365 415 465 520 570 670 775 880 980 1080 1 295

BS

4504 : 1969

.

3 3 3 4 4 4 5 5 5 5 5 5 5 5 5 6 6 6 6 6 6 6 6 6 8

TABLE 6/& STEEL

LOOSE

FLANGES FOR

WELDED

ON LAPPED PiPE

ENDS

Nominal pressure 6 bar (1 bar = 10'

N/m?

'.

Pipe 0.d. dl 17.2 21.3 26.9 33 -7 42.4 48.3 60.3 76-1 88.9 114.3 139.7 168.3 219.1 273 323.9 355-6 406.4 457.2 508 609.6 711.2 812.8 914.4 1016 1 220

I.'

0 D 75 80 90 100 120 130 140 1M3 190 210 240 265 320 375 440 490 540 595 645 755 860 975 1075 1 175 1405 Flange b 10 . 10 10 12 12 12 12 12 14 14 14 14 18 20 24 26 30 32 32 36 40 44 48 52 €0

-

4 20 24 30 37 46 52 65 81 94 119 145 174 225 279 330 362 426 465 516 618 720 822 926 1028 1 232 8 ' 5 5 5 6 6 G 6 6 G 6 6 6' 8 8 8 8 8 8 8 8 8 8 8 8 10

-

Drllllag 11 11 11 11 14 14 14 14 18 18 18 18 18 18 22 22 22 22 22 26 26 30 30 30 33

-

k 50 55 65 75 90 100 110 130 150 170 200 225 280 335 395 44s 495 550 600 705 810 920 1 O20 1 120 1340 Pipe eod '4

I

r max.

-

_y-

(28)

--`,``-`-`,,`,,`,`,,`---B S I

B S X 4 5 0 4 :

P A R T 8 1

6 9

l b 2 4 6 6 9

0278007

2 =

_ _ ~~ Nom. size 10 15 20 25 32 40 BS 4504 : 1969 ~~~ ~ Flange D 75 ' 8 0 90 100 120 130

TABLE 6/& STEEL PLATE BLANK FLANGES

Nominal pressure 6 bar (1 bar = 10' N/m*)

NOTE. The two types of flanges shown are alternatives at the option of the manufacturer.

Form B

Form

C As altrrrd Marrh. 1971 50 65 80 100 125 350 175 200 250 300 350 400 450 500 140 160 190 210 240 265 295 320 375 440 490 540

-

595 645 b 12 12 ' 14 14 14 . 14 14 14 16 16 18 18 20 20 22 22 22 22 24 24

-

4

-

55 70 90 115 140 165 190 237 285 332 380 428 475 Bolting M10

M

10 M10 M 10 M12 M 12 M12 M12 M16 M16 M16 M16 M 16 M 16 M 16 M20 M20 M20 M20 M20 No. 4 4 4 4 4 4 4 4 4 4 8 8 8 8 12 12 12 Drilling 11 11 11 * 11 14 14 14 14 18 18 18 18 18 18 18 22 22 16 I 22 16

1

22 20

I

22

--

h

!io

55 65 75 90 1c3 110 130 150 170 200 225 255

250

335 395 445 495 550 600

BS 4504 - Part I

B S I

B S * 4 5 0 4 :

P A R T S 1

67

1 6 2 4 b b î 0 2 7 7 7 8 0

T

m '

BRITISH STANDARD

4504 :

'Part 1

:

1969

SPECIFICATION

FOR

FLANGES AND BOLTING

FOR

PIPES,

VALVES AND

FITTINGS

METRIC

SERIES

Part

1.

Ferrous

O

B

S

0

LES

C

E

N.f

AUG 1989

BRITISH

STANDARDS

I N S m O N

--`,``-`-`,,`,,`,`,,`---B S I --`,``-`-`,,`,,`,`,,`---B S * 4 5 0 4 :

PARTS3 6 9

L b 2 4 b b 9 0 2 7 7 9 8 3

I

W

THIS

A

A

up

.

E t s w % - - . - p -

.

,

*

--`,``-`-`,,`,,`,`,,`---BSI

B S * 4 5 0 4 :

P A R T * l b 9

l b 2 4 6 6 9 0 2 7 7 9 8 2

3 m L

CONTENTS

,

. .

. .

. . .

.

. . .

. . .

.

.

. . .

.

.

*

.

. . .

. .

. . .

.

.

.

.

.

.

**--`,``-`-`,,`,,`,`,,`---B S I --`,``-`-`,,`,,`,`,,`---B S * 4 5 0 4 :**

**P A R T * l b 9**