Large diameter seamless steel pipe

The main production processes of large-diameter seamless steel pipes in my country are hot-rolled large-diameter seamless steel pipes and hot-expanded-diameter seamless steel pipes.

Large diameter seamless steel pipe material
Material: 10# 20# 35# 45# 16Mn 27SiMn 15CrMo 12Cr1MoV 10CrMo910 T91 P91 J55 K55 Q345, etc.

Executive standard for seamless steel pipe
1. Seamless steel pipe for structure: GB/T8162-2018
2. Ground seam steel pipe for conveying fluid: GB/T8163-2018
3. Low and medium pressure boiler tubes Seamless steel tubes for boilers: GB/T3087-2018
4. High-pressure seamless pipes for boilers: GB/T5310-2018 (ST45.8-Ⅲ type)
5. High-pressure seamless steel pipes for fertilizer equipment: GB/T6479-2018
6. Seamless steel pipe for geological drilling: YB235-70
7. Seamless steel pipe for oil drilling: YB528-65
8. Seamless steel pipes for petroleum cracking: GB/T9948-2018
9. Special seamless pipe for oil drill collar: YB691-70
10. Seamless steel pipes for automobile axle shafts: GB/T3088-2018
11. Seamless steel pipes for ships: GB/T5312-2018
12. Cold-drawn and cold-rolled precision seamless steel pipes: GB/T3639-2018
13. Various alloy tubes 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo

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