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英制螺纹一寸为25.4mm,故1/2为12.7mm5 I" l: j% J W2 n2 a8 |3 s- t* A% P+ }, {( L 管螺纹一寸为33mm.0 {! U$ O+ B% y. b: W) n- m6 j8 K# n9 O9 x, e9 \) n 1/8 =10mm . f8 _" j% ]1 h& u sI {" n }( ^1 d, x* v9 N2 o1/4=13mm& [4 x0 a$ v6 x5 K- k6 A' r0 {& `. I4 h% n% g- y 3/8=17mm" U0 ^# h1 G! u9 n4 d7 j9 O0 g) A; q 1/2=21mm. a# ?& \/ `0 a0 N& u; C* Z2 _: c+ W( }" m- [+ [- L' O: \. L 5/8=23mm9 u1 ]# v( n3 X2 e, g% o" `& e & r$ ~7 C, [, _0 Y( ^# G& R" |3/4=27mm S4 d0 u9 I7 Y+ a( ^; n7 e# ^6 o 7/8=30mm& t* A# z2 V C4 k8 a# | " O( A t7 [2 y7 V8 F1"=33mm# g* U% Z" @6 z# D W, L1 { ) t0 j7 o3 E9 k0 d# L8 H# i |
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