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| Region | Standard | Materials & Grades |
|---|---|---|
| U.S.A. | ASTM A53/A106/A178/A179/A192/A210/A213/A333/A335 | Gr.B/Gr.A/A179/A192/T11/T22/P1/P5/4140/4130 |
| Germany | DIN 1626/17175/1629/2448/2391 | ST33, ST37, ST35.8, ST45, ST52, 15Mo3, 13CrMo44 |
| Japan | JIS G3452/G3454/G3456/G3461 | STPG38, STB30, STS38, STB42, STBA23 |
| China | GB/T8162/T8163, GB5310/9948 | 10#, 20#, 45#, Q345B, Q355B, 15CrMo, 42CrMo |










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