1. API 5L: Grade A, Grade B, X42, X46, X52, X56, X60, X65, X70, X80 2. ASTM A 53: Grade A, Grade B, Grade C, Type F, Type E 3. ASTM A519: 1010-1045, 4130-4142, 5135 4. GB/T8162: 10, 20, 35, 45, 16Mn, 12C rMo, 15CrMo, 12C rl MoV 5. JIS G3441: SCM 415 TK, SCM 418 TK, SCM 420 TK, SCM 430 TK, SCM 435 TK, SCM 440 TK 6. JIS G3444: STKM 11A, STKM 12, STKM 13, STKM 14, STKM 15, STKM 16, STKM 17, STKM 18 STKM 19, STKM 20 7. DIN 2391: St30Si, St30A1, St35, St45, St52 8. EN10305: E235, E355 9. EN 10210: S235JRH; S275J0H, S275J2H; S355J0H, S355J2H; S275NH, S355NH; S275NLH, S355NLH