標準 Standard:
GB/T8163 China National Standard
ASTM A 53M Standard of American society for Testing＆Materials
ASTM A 106 Standard of American society for Testing＆Materials
用途 Used:
用于石油、天然氣輸送以及其他流體輸送
For conveyance of petroleum , gas and conveyance of other fluid
尺寸公差 Tolerances on Dimensions：
標準
Standard |
外徑公差
Outside Diameter Tolerance |
壁厚公差
Wall Thickness Tolerance |
GB/T8163 |
D＜50mm |
±0.50mm |
15%/-12.5%(最小min0.45mm/-0.4mm) |
D≥50mm |
±1％ |
ASTM A 53M |
D≤48.3mm |
±0.4mm |
±12.5% |
D＞48.3mm |
±1％ |
ASTM A 106 |
D≤48.3mm |
±0.4mm |
15%/-10% |
48.3mm＜D≤114.3mm |
±0.79mm |
D＞114.3mm |
1.59mm/-0.79mm |
