电 话:022-86896383、86896880
手 机:13820085065、13516148999、13312150007
传 真:022-86896880
联系人:张坤、王静
地 址:天津市静海区
低中压锅炉管尺寸公差
尺寸公差
标准 |
外径 |
壁厚 |
壁厚允许偏差 |
DIN17175 |
≤130 |
S≤2·Sn |
+15%,-10% |
2·Sn |
+12.5%,-10% | ||
S>4·Sn |
±9% | ||
>130 |
S≤0.05da |
+15%,-10% | |
0.05da |
±12.5% | ||
S>0.11da |
±10% | ||
GB3087 |
-- |
3-20 |
+12.5%,-12.5% |
>20 |
±10% | ||
ASME SA450 |
-- |
2.4-3.8 |
+35%,-0% |
>3.8-4.6 |
+35%,-0% | ||
>4.6 |
+23%,-0% | ||
ASME SA530 |
-- |
-- |
±12.5% |
外径允许偏差
标准 |
外径 |
外径允许偏差 |
DIN17175 |
≤100 |
±0.75% (min=0.5mm) |
>100 |
±0.90% | |
GB3087 |
≤159 |
+1.25% -1.0% |
ASME SA450 |
≤101.6 |
+0.4 -0.8 (mm) |
>101.6-190.5 |
+0.4 -1.2 (mm) | |
ASME SA530 |
≤48.3 |
+0.4 -0.8 (mm) |
>48.3-114.3 |
±0.8 (mm) | |
>114.3 |
+1.6 -0.8 (mm) |
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传真:022-86896621
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