| Quality Standard: |
| API 5L Standard Specification for Seamless Line Pipe or Seamless Pipe Line |
| ASTM A 53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless |
| ASTM A519 Seamless Carbon and Alloy Steel Mechanical Tubing |
| ASTM A106 Seamless Carbon Steel Pipes for oil pipeline and gas pipeline transportation |
| GB/T8162 Seamless Steel Tubes for Structural Purposes |
| JIS G3441 Alloy steel tubes for machine purposes |
| JIS G3444 Carbon steel pipes for general structural purposes |
| JIS G3445 Carbon steel tubes for machine structural purposes |
| DIN 2391 Seamless Precision Steel Tubes |
| EN10305 Steel tubes for precision applications. Technical delivery conditions. Seamless cold drawn tubes |
| EN 10297 Hot rolled seamless steel tubes with an application in the mechanical and general engineering |
| EN 10210:Seamless structural steel pipes |
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| Steel Grade: |
| API 5L: Grade A, Grade B, X42, X46, X52, X56, X60, X65, X70, X80 |
| ASTM A 53: Grade A, Grade B, Grade C, Type F, Type E |
| ASTM A519: 1010-1045, 4130-4142, 5135 |
| GB/T8162: 10, 20, 35, 45, 16Mn, 12C rMo, 15CrMo, 12C rl MoV |
| JIS G3441: SCM 415 TK, SCM 418 TK, SCM 420 TK, SCM 430 TK, SCM 435 TK, SCM 440 TK |
| JIS G3444: STKM 11A, STKM 12, STKM 13, STKM 14, STKM 15, STKM 16, STKM 17, STKM 18 |
| STKM 19, STKM 20 |
| DIN 2391: St30Si, St30A1, St35, St45, St52 |
| EN10305: E235, E355 |
| EN 10297: E355K2, E470, E420J2, E590K2 |
| EN 10210: S235JRH; S275J0H, S275J2H; S355J0H, S355J2H; S275NH, S355NH; S275NLH, S355NLH |
