| types of | Executive standards | Typical steel grade |
| Machined tube | EN, DIN, JIS, GB or user protocol standards | S355J2H、P355、E355、20MnV6、E470、20-45、 1E2892、S40CBM、SCr440B、SCM415、SCM440 |
| Automobile dedicated pipe | ASTM or User Agreement Standards | 20Mn2（A）、1045、20MnV6、E500、E430、5130H、 SAE1030M、SAE4124、20CrMoH、SAE1527 |
| OCTG | API, ASTM, or User Agreement Standards | 4130、4130M、4140、4145、1340、35CrMo、42CrMo、 J55、N80、L80、P110、Q125、9-13Cr |
| line pipe | API or User Protocol Standards | L245NS、X52NS、X70QS、X100QO |
| Hydraulic props, cylinder pipes | GB or User Agreement Standards | 27SiMn、30CrMnSiA、26MnNbTiB、FGS80WV、S690、 S890、P355NL1、20MnV6、Q345 |
| fluid pipe | GB or User Agreement Standards | 20、Q235、Q345 |
| bearing tube | SKF specification, GB or user protocol standard | 52100、100Cr6、SUJ2、GCr15、GCr15SiMn、100CrMo7、8620 |
| Boiler tubes | ASME, ASTM, GB or User Agreement Standards | SA-106B/C、T/P22、T/P91、T/P92、12Cr2MoG、15CrMoG、12Cr1MoVG |
| Gas vessel tube | GB or User Agreement Standards | 37Mn、4130X、34CrMo4、30CrMoLX |
| types of | Executive standards | Typical steel grade |
| Machined tube | EN, DIN, JIS, GB or user protocol standards | S355J2H、P355、E355、20MnV6、E470、20-45、 1E2892、S40CBM、SCr440B、SCM415、SCM440 |
| Automobile dedicated pipe | ASTM or User Agreement Standards | 20Mn2（A）、1045、20MnV6、E500、E430、5130H、 SAE1030M、SAE4124、20CrMoH、SAE1527 |
| OCTG | API, ASTM, or User Agreement Standards | 4130、4130M、4140、4145、1340、35CrMo、42CrMo、 J55、N80、L80、P110、Q125、9-13Cr |
| line pipe | API or User Protocol Standards | L245NS、X52NS、X70QS、X100QO |
| Hydraulic props, cylinder pipes | GB or User Agreement Standards | 27SiMn、30CrMnSiA、26MnNbTiB、FGS80WV、S690、 S890、P355NL1、20MnV6、Q345 |
| fluid pipe | GB or User Agreement Standards | 20、Q235、Q345 |
| bearing tube | SKF specification, GB or user protocol standard | 52100、100Cr6、SUJ2、GCr15、GCr15SiMn、100CrMo7、8620 |
| Boiler tubes | ASME, ASTM, GB or User Agreement Standards | SA-106B/C、T/P22、T/P91、T/P92、12Cr2MoG、15CrMoG、12Cr1MoVG |
| Gas vessel tube | GB or User Agreement Standards | 37Mn、4130X、34CrMo4、30CrMoLX |
