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极限偏差

ASME/ANSI B16.9
所有管件 弯头、三通 异径管、搭接 管帽 180度回转管 搭接
公称尺寸 坡口处外径 端面处内径 壁厚 中心至端面尺寸 全长 全高 中心至中心尺寸 顶端至端面尺寸 端面平面度 搭接外径 搭接厚度 搭接圆角半径
(in) D   t A、B、C、M F、H E O  K U G T R
1/2to21/2 +1.52,-0.76 0.76 Not Less Than 87.5% of Nominal Thickness不小于公称壁厚的87.5%  1.52 1.52 3.05 6.35 6.35 0.76 +0,-0.76 +1.52,-0 +0,-0.76
3to31/3 1.52 1.52 1.52 1.52 3.05 6.35 6.35 0.76 +0,-0.76 +1.52,-0 +0,-0.76
4 1.52 1.52 1.52 1.52 3.05 6.35 6.35 0.76 +0,-0.76 +1.52,-0 +0,-1.52
5to8 +2.29,-1.52 1.52 1.52 1.52 6.35 6.35 6.35 0.76 +0,-0.76 +1.52,-0 +0,-1.52
10to18 +4.06,-3.05 3.05 2.29 2.29 6.35 9.65 6.35 1.52 +0,-1.52 +1.52,-0 +0,-1.52
20to24 +6.35,-4.83 4.83 2.29 2.29 6.35 9.65 6.35 1.52 +0,-1.52 +1.52,-0 +0,-1.52
26to30 +6.35,-4.83 4.83 3.05 4.83 9.65            
32to36 +6.35,-4.83 4.83 4.83 4.83 9.65            


ASME/ANSI B16.28所有管件
  弯头 180度回转管
公称尺寸 坡口处外径 端面处内径 壁厚 斜度 中心至端面尺寸 中心至中心尺寸 顶端至端面尺寸 端面平面度
        角的 平面的
(in) D   t Q P A O  K U
1/2to21/2 +1.52,-0.76 0.76 Not Less Than 87.5% of Nominal Thickness不小于公称壁厚的87.5%  0.76 1.52 1.52 6.35 6.35 0.76
3to31/3 1.52 1.52 0.76 1.52 1.52 6.35 6.35 0.76
4 1.52 1.52 0.76 1.52 1.52 6.35 6.35 0.76
5to8 +2.29,-1.52 1.52 1.52 3.05 1.52 6.35 6.35 0.76
10to12 +4.06,-3.05 3.05 2.29 4.83 2.29 9.65 6.35 1.52
14to16 +4.06,-3.05 3.05 2.29 6.35 2.29 9.65 6.35 1.52
18 +4.06,-3.05 3.05 3.05 9.65 2.29 9.65 6.35 1.52
20to24 +6.35,-4.83 4.83 3.05 9.65 2.29 9.65 6.35 1.52


GB12459
所有管件 弯头、三通 异径管 管帽 180度回转管 斜度公差
公称尺寸 坡口处外径 端面处内径 壁厚 中心至端面尺寸 全长 全高 中心至中心尺寸 顶端至端面尺寸 端面平面度 角的 平面的
(in) D   t H、F、C、M L E、E1 P K U X Y
15to65 +1.6,-0.8 ±0.8 Not Less Than 87.5% of Nominal Thickness不小于公称壁厚的87.5%  ±2 ±2 ±4 ±7 ±7 1 1 2
80to100 ±1.6 ±1.6 ±2 ±2 ±4 ±7 ±7 1 1 2
125to200 +2.4,-1.6 ±1.6 ±2 ±2 ±7 ±7 ±7 1 2 4
250to300 +4.0,-3.2 ±3.2 ±3 ±3 ±7 ±10 ±7 2 3 5
350to400 +4.0,-3.2 ±3.2 ±3 ±3 ±7 ±10 ±7 2 3 7
450 +4.0,-3.2 ±3.2 ±3 ±3 ±7 ±10 ±7 2 4 10
500 +6.4,-4.8 ±4.8 ±3 ±3 ±7 ±10 ±7 2 4 10


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Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.

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