BS 4568

Full text

(1)c cccccccccccccccccccccccccccccc. BS 4568-1:1970 (Alternate Standard to BS 31:1940) c GENERAL c ×c c c

(2) c

(3) cc c c c cc

(4) cc c !"c c ×c

(5) cc

(6) c

(7) #c c$

(8) c

(9) cccc$

(10) c

(11)

(12) cc c c"c% c $c&& cc$

(13) c

(14) cc

(15) c'

(16) c (cc&&

(17)

(18) cc(

(19) ccc ccc'$cc$

(20) c )c$(c#c "c c ×c º$

(21) c

(22) c

(23) &

(24) c#$c& cc

(25) 'c cc

(26) "c c ×c º$c$ *

(27)

(28) cc$c c$'(c c

(29) c

(30)

(31) c#ccc$c

(32) & c c cc cc

(33) c+c c' cc$c &) cc cc$cc#c #

(34) cc$c, -c$c "c c ×c cc

(35) c$

(36) c#c ( c c'c&

(37) "c .c c /c#

(38) cc&c #.c c c

(39) cc &

(40) "c c ×c ,c#$c&

(41) ccc c c

(42) c cc cc0c c

(43) c c. c c. c.

(44) c. BS 4568-1:1970. BS 31:1940. GENERAL: c c,c$

(45) c

(46) $cc

(47) c$c1

(48) cc (cc

(49) c

(50) ccc

(51) c

(52) cc #c

(53) c c'$ $c c

(54) cc& cc#

(55) c c c

(56) "cc c. GENERAL: c c,c$

(57) c

(58) $c

(59) c

(60) cc

(61) $c#cc c

(62) "c c

(63) $c $(cc

(64) c

(65) $ccc

(66) cc c$c0c

(67) c&c

(68) 1c $cc

(69) ccc cc

(70)

(71) c$cc&c cc$c cc $"c. CLASSIFICATION:

(72) cc

(73) cc

(74)

(75) c ccc c ×c r c

(76) cc

(77) c ×c 'c

(78) cc

(79) c c $c

(80)

(81) cc

(82) c cc$c)&ccc

(83) c& c&& c c Class 1: Light r cc#$c

(84)

(85) c c Class 2: Medium r cc#$c

(86)

(87) c

(88) cc

(89) c c Class 3:Medium Heavy r c

(90) c

(91) c

(92)

(93) c0cc

(94) c

(95) c

(96)

(97) cc c Class 4: heavy r c#$c

(98) cc

(99) "c c. CLASSIFICATION: º$cc'c

(100)

(101)

(102) cc

(103) c

(104) cc c' c c ×c

(105)

(106) c2cr c ×c 32 c 'c c

(107)

(108) c2c

(109)

(110)

(111) cc $cc c$ *

(112)

(113) cc

(114) "c$

(115) c c

(116) c $c

(117) c4 /c#5cc

(118) c'c c

(119)

(120) cc

(121)

(122)

(123) cc$()cc cc$c$ *

(124)

(125) cc

(126) "c c

(127) c

(128) c $c'cc

(129) c'"c c

(130)

(131)

(132) ccc$c

(133)

(134) c cc

(135) c& c && c c Class 1: Light r cc#$c

(136)

(137) c c Class 2: Medium r cc#$c

(138)

(139) c

(140) cc

(141) c c Class 3:Medium Heavy r c

(142) c

(143) c

(144)

(145) c0cc

(146) c

(147) c

(148)

(149) cc c Class 4: heavy r c#$c

(150) cc

(151) c c c.

(152) MARKING: c

(153) c

(154) $c#c *c

(155) c c ×c º$c cc *cc$c *"c ×c º$c #cc

(156) $c

(157) c ×c º$c

(158)

(159) cc

(160) $"c c

(161)

(162) cc

(163) $c

(164) $c#c *c cc')c$c c' c#c &

(165)

(166) #cc (c "c6* c

(167) $c#cc$c$cc /cccc"cº$c * c

(168) $c#c

(169) )c #"c c Test for durability of marking: %# )c

(170) c#c$*c#)c## c$c * c#)c$c cc

(171)

(172) c' $cc& cc$c

(173) *c' $c'cc ccc

(174)

(175) c' $cc& cc$c

(176) *c' $c & c

(177) & "cc$c

(178) c$c * c

(179) $c c

(180) )c#"c c DIMENSIONS: º$c

(181) c /c'c$ *

(182)

(183) cc

(184) cc$c cc "c c TABLE: Standard sheet No 1 and Standard sheet No 2. c cccccccccccccccccccccccccccccccccccccccc c $c7cc c cccccccccccccccccccccccccc. MARKING:

(185)

(186) cc

(187) $c

(188) $c#c *c cc')c$c c' c#c &

(189)

(190) #cc (c "c6* c

(191) $c#cc$c$cc /cccc "cº$c * c

(192) $c#c

(193) )c#"c c c c c c c. DIMENSIONS: º$c

(194) c cc$c cc'$ $c c' c#c "c c TABLE No:1. c.

(195) c. c LENGTH OF CONDUITc º$c c

(196) $c#c c ccc

(197) $c$cccc cccc&c

(198) $c#c

(199) && c' $c$c$cc

(200) 'c "c c LENGTH OF THREAD: c $c$cc$cc$ccc$c c

(201) $c#c cc cº#c"c c THICKNESS OF CONDUITc c º$c c

(202) $c#c c' $c

(203) & (c$ *

(204)

(205) c

(206) c c c#cc c º$c(c$ *

(207)

(208) cc

(209) c c

(210) $c#c c#)c ' $ cc

(211)

(212) c$cc$cc"$c' $c

(213) $c#cc ' $ c&

(214) cc

(215) cc&cc$c

(216) c c#c"c. ccccccccccccccccccccccccccccccccccccc c $c7c0c Tests for dimension: ×c +c c ×c ( )c ×c

(217) 'c$

(218) c ×c 'c$ *

(219)

(220) c c c c. Test for dimensions: ×c c

(221) c c ×c c$ *

(222)

(223) c ×c

(224) c

(225) c /c$ *

(226)

(227) c ×c /&/

(228) 2)cc

(229) ' . TOLEREANCESc c 2c

(230) c c

(231) c

(232) $c+&c$

(233) c

(234) cc

(235) & cc + cc cc (c/$c c

(236)

(237) ccc

(238) #4cccc&

(239) c

(240) c8"cc c c c c c c c c c c c. TOLEREANCESc c

(241)

(242) c2c cºcccc c c&& cc& (c c

(243) $c#c9 ". c c: ". c $"c c

(244)

(245) cc ºccc c$c#c()c c. ". c#(c$c c

(246) 5cc c

(247) c'cc$c c cc$c

(248) 'c$c

(249) c c#c2c c c c c c c c.

(250) c CONSTRUCTION:

(251) c

(252) $c#c

(253) c'cc

(254) c#)c' "cº$)c

(255) $c

(256) $'cc&& #c(

(257)

(258) cc$ c c

(259) c

(260) $c#cc c#

(261) "c

(262) c'$ $c c$c#"c c c Test : º$c

(263) &c

(264) c#cc c

(265) $c&

(266) cc c

(267)

(268) )/c $

(269) c

(270) $c#cc )"c $c&

(271)

(272) c c 'c

(273)

(274) c

(275) $c#cc c$)cc *)cc

(276) c cc#

(277) "c c MECHANICAL PROPERTIES OF CONDUITS:

(278) c'$c#c

(279) $c

(280) $'cc*

(281) cc

(282) $cc#c cc

(283) $cc+c$c$)cc c'$c ' c "c c Test: º$c

(284) cc#c$$c cc

(285) cc#cc $( cc

(286) c1cc

(287) +c

(288) c$c c

(289) 5"c cc

(290) cc+ c$c c

(291) 5cc0 /c # cc

(292) $c#c

(293) cc'$ $cc+ c c

(294) 5cc0 c# c $ c

(295) $c#c

(296) /c c

(297) c' $c'c

(298)

(299) c/

(300) +c

(301) &

(302) c

(303) $c#c

(304) c /$c' $c

(305) c

(306) cc#cc$c' $c

(307) cc *"c 2c$c

(308) /c $c$c#

(309) c cc /cc)c cc c' $c cc$()c& c/

(310) $c

(311) $'c)c*

(312) c'$ $cc

(313) )c(

(314) #"c º$c#c c

(315) $c#c$c c( c&cc#c # c

(316) ) )c

(317) &

(318) c c cc$ 5"c,c

(319) $c $c#c&

(320)

(321) #cccc&

(322) $c

(323) c#c$( cc c

(324) c

(325) & c c#c"c c TEST FOR CORROISON: Light protectionc &

(326) cc c' $c $c& c

(327) $c#c

(328) ')c#ccc

(329) $c) c c $( cc

(330) c1cc c .cºc

(331) c$c c c cc cc + cc c cc0 "c 0.cº'(c

(332) c$c c cc$c

(333) "c c 2c

(334) $cc#cc *c$c#cc c$ *c

(335) $c#c &c#'c$c cc "c2c$

(336) c

(337) c cc c

(338) $c

(339) $'cc "c

(340) c

(341) $c#c

(342) &cc &

(343)

(344) cc( c#)c& (c c. TABLE A: c. c c c c c c c c c TEST FOR CORROISON: º$c

(345) cc

(346) c

(347) c

(348) c

(349) c c c c Light protectionc &

(350) cc c' $c $c& c

(351) $c#c

(352) ')c#ccc

(353) $c) c c$( cc

(354) c 1cc c .cºc

(355) c$c c c cc cc+ c c c cc0 "c 0.cº'(c

(356) c$c c cc$c

(357) "c c 2c

(358) $cc#cc *c$c#cc c$ *c

(359) $c#c&c.

(360) #$c

(361) cc

(362) "cc c. #'c$c cc "c2c$

(363) c

(364) c cc c

(365) $c

(366) $'cc "c

(367) c

(368) $c#c

(369) &cc &

(370)

(371) c c( c#)c& (c c#$c

(372) cc

(373) "cc c Medium protection: &

(374) cc c

(375) $c#c#/cc' $c Medium protection: &

(376) cc c

(377) $c#c#c /c' $cc& cc' c

(378) *c c#5cc$c c& cc' c

(379) *c c#5cc$c "c$c#c

(380) cc " 8c&

(381)

(382) c ) ccc "08cc c "c$c#c

(383) cc " 8c&

(384)

(385) c ) cc &

(386) &$c c'ccc1 )c#c "8c

(387) #c' c c "08cc c&

(388) &$c c'ccc1 )c c/c

(389) cc

(390) c

(391) cc*)&$$ c

(392) &$ c c #c "8c

(393) #c' cc/c

(394) cc

(395) c

(396) $c#c"c

(397) cc*)&$$ c

(398) &$ c c

(399) $c#c"c c c Heavy protectionc &

(400) cc c

(401) $c#c#c/

(402) c#)c Heavy protectionc &

(403) cc c

(404) $c#c#c /

(405) c#)c

(406) c c $$)c cc

(407) c c $$)c cc' $c c cc c

(408) cc' &c)c' $cc& cc

(409) c$"cº$)c

(410) $c$c#c ' $c c cc c

(411) cc' &c)c' $cc& cc

(412) c cc08c

(413) cc

(414) &$ c c c'ccc

(415)

(416) /c

(417) c$"cº$)c

(418) $c$c#c

(419) c cc08c

(420) cc

(421) &$ c c c'ccc

(422)

(423) /c$$)cc c $$)cc c c'ccc c' &c)c' $cc c'ccc c' &c)c' $cc& cc

(424) c$"c & cc

(425) c$"cº$c#c&c

(426) $c$c#c

(427) c cc º$c#c&c

(428) $c$c#c

(429) c cc

(430) cc&&c

(431) cc&&c

(432) &$c c

(433) c'/c$( cc

(434) & c ( )cc"cc0 c"c

(435) &$c c

(436) c'/c$( cc

(437) & c( )cc"c c0 c"c c c c c c c c. c.

(438)

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