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| Chinese | English |
| 美国标准直管内螺纹 | American Standard internal straight pipe threads |
| 美国标准美制直管螺纹 | American Standard straight pipe thread (national pipe straight thread) |
| 美国标准粗螺纹 | national coarse thread |
| 美国标准细螺纹 | national fine thread |
| 美国标准美制锥形管螺纹 | national standard pipe taper thread |