10. Ship carbon steel seamless pipe (GB5213-85) is the manufacture of pressure vessels piping grade I, Ⅱ grade pressure piping, boilers and Superheater carbon steel seamless pipe. Carbon steel seamless pipe wall temperature does not exceed 450 ℃, alloy steel seamless steel pipe wall temperatures in excess of 450 ℃.

11. Automobile axle casing seamless pipe (GB3088-82) is the manufacture of vehicle axle and drive axle housing tube axis useful high-quality carbon structural steel and alloy steel hot-rolled seamless steel tubes.

12. Diesel high pressure oil pipe (GB3093-2002) is to create high-pressure diesel engine injection system useful in the cold drawn seamless steel tubes.

13. Hydraulic and pneumatic cylinder seamless steel with precision internal diameter (GB8713-88) is a manufacturer of hydraulic and pneumatic cylinder with a diameter size with precision cold drawn or cold rolled precision seamless steel tubes.