Seamless steel pipe

Seamless steel pipe for structure GB / t8162-2018 is mainly used for general structure and machining. Its representative material (brand): carbon steel 20#, 45 steel; Alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35crmo, 42CrMo, etc.

Structural stainless steel seamless pipe (GB / T14975-2002) is a hot-rolled (extruded, expanded) and cold drawn (rolled) seamless pipe made of stainless steel for corrosion-resistant pipes, structural parts and parts in chemical, petroleum, light textile, medical, food, machinery and other industries. voice

1. Seamless steel pipe for structure: gb8162-2008

2. Ground seam steel pipe for fluid transmission: gb8163-2008

3. Seamless steel pipe for boiler: gb3087-2008

4. High pressure seamless pipe for boiler: GB5310-2008 (ST45.8 – type III)

5. High pressure seamless steel pipe for chemical fertilizer equipment: GB6479-2000

6. Seamless steel pipe for geological drilling: yb235-70

7. Seamless steel pipe for oil drilling: yb528-65

8. Seamless steel pipe for petroleum cracking: GB9948-2006

9. Special seamless pipe for petroleum drill collar: yb691-70

10. Seamless steel pipe for automobile axle shaft: gb3088-1999

11. Seamless steel pipe for ships: gb5312-1999

12. Cold drawn cold rolled precision seamless steel pipe: gb3639-1999

13. Various alloy pipes 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMoV, 20g, 40Cr, 12Cr1MoV, 15CrMo

In addition, there are GB / t17396-2009 (hot rolled seamless steel pipe for hydraulic prop)

Gb3093-1986 (high pressure seamless steel pipe for diesel engine)

GB / t3639-1983 (cold drawn or cold rolled precision seamless steel tubes)

GB / t3094-1986 (cold drawn seamless steel pipe, special-shaped steel pipe)

GB / t8713-1988 (precision inner diameter seamless steel tubes for hydraulic and pneumatic cylinders)

Gb13296-2007 (stainless steel seamless steel pipe for boiler and heat exchanger)

GB / T14975-2002 (stainless steel seamless steel pipe for structure)

GB / T14976-2002 (stainless steel seamless steel pipe for fluid transportation)

GB / t5035-1993 (seamless steel pipe for automobile axle sleeve pipe)

API Spec 5ct-1999 (Specification for casing and tubing), etc. Cold drawn (rolled) structural pipe: round pipe blank → heating → perforation → heading → annealing → pickling → oil coating (copper plating) → multi pass cold drawing (cold rolling) → blank pipe → heat treatment → straightening → hydrostatic test (flaw detection) → marking → warehousing.