China's current seamless steel pipe standards:
1. Current seamless steel pipe standard: a total of 47 of which: GB 25 HB 3 special use 19; basic 2 products 45
2. Common Criteria:
Acceptance, packing, marking and quality certificate of steel pipe GB / T 2102-2006.
Seamless steel tubes - Dimensions, shape, weight and permissible deviation GB / T.
③ Seamless Steel Tube for High Pressure Boiler GB 5310-2008.
④ Seamless Steel Tube for Petroleum Cracking GB 9948-2013.
Standard Specification for Seamless Steel Pipe for High Pressure Fertilizer Equipment GB 6479-2013.
⑥ GB 18248-2008 Seamless Steel Tube for Gas Cylinders.