1. Seamless steel pipe for structural use: GB8162-2008 2. Seamless steel pipe for conveying fluid: GB8163-20083. Seamless steel pipe for boiler: GB3087-2008 4. High-pressure seamless pipe for boiler: GB5310- 2008 (ST45.8-Ⅲ type) 5. High-pressure seamless steel pipe for fertilizer equipment: GB6479-1999 6. Seamless steel pipe for geological drilling: YB235-70 7. Seamless steel pipe for oil drilling: YB528-65 8. Petroleum cracking Seamless steel pipe for use: GB9948-88 9. Seamless pipe for oil drill collars: YB691-70 10. Seamless steel pipe for automobile half shafts: GB3088-1999 11. Seamless steel pipe for ships: GB5312-1999 12. Cold drawn and cold Rolled precision seamless steel pipe: GB3639-1999 13. Various alloy pipes 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMoc and others

In addition, there is GB/T17396-1998 ( Hot-rolled seamless steel pipe for hydraulic props), GB3093-1986 (high-pressure seamless steel pipe for diesel engines), GB/T3639-1983 (cold-drawn or cold-rolled precision seamless steel pipe), GB/T3094-1986 (cold-drawn seamless steel pipe Special-shaped steel pipe), GB/T8713-1988 (precision inner diameter seamless steel pipe for hydraulic and pneumatic cylinders), GB13296-1991 (stainless steel seamless steel pipe for boilers and heat exchangers), GB/T14975-1994 (stainless steel seamless steel pipe for structural use) , GB/T14976-1994 (stainless steel seamless steel pipe for fluid transportation) GB/T5035-1993 (seamless steel pipe for automobile axle shaft casing), API SPEC5CT-1999 (casing and oil pipe specification), etc.