The executive standard of seamless steel pipe

The executive standard of seamless steel pipe

1. Structural seamless steel pipes (GB/T8162-1999) are seamless steel pipes used for general structures and mechanical structures.

2. Seamless steel pipes for fluid transmission (GB/T8163-1999) are general seamless steel pipes used to transport fluids such as water, oil, and gas.

3. Seamless steel pipes for low and medium pressure boilers (GB3087-1999) are used to manufacture superheated steam pipes, boiling water pipes for low and medium pressure boilers of various structures, superheated steam pipes, large smoke pipes, small smoke pipes and arch bricks for locomotive boilers High-quality carbon structural steel hot-rolled and cold-drawn (rolled) seamless steel pipes for pipes.

4. Seamless steel tubes for high-pressure boilers (GB5310-1995) are high-quality carbon steel, alloy steel and stainless heat-resistant seamless steel tubes for the heating surface of water tube boilers for high pressure and above.

5. High-pressure seamless steel pipe for fertilizer equipment (GB6479-2000) is a high-quality carbon structural steel and alloy steel seamless steel pipe suitable for chemical equipment and pipelines with a working temperature of -40~400°C and a working pressure of 10~30Ma.

6. Seamless steel pipes for petroleum cracking (GB9948-88) are seamless steel pipes suitable for furnace tubes, heat exchangers and pipes in petroleum refineries.

7. Steel pipes for geological drilling (YB235-70) are steel pipes used by geological departments for core drilling. According to their uses, they can be divided into drill pipes, drill collars, core pipes, casing pipes and sedimentation pipes.

8. Seamless steel pipes for diamond core drilling (GB3423-82) are seamless steel pipes used for drill pipes, core rods and casings for diamond core drilling.

9. Oil drilling pipe (YB528-65) is a seamless steel pipe used for oil drilling with inner or outer thickening at both ends. There are two types of steel pipes: threaded and non-threaded. The threaded pipes are connected with joints, and the non-threaded pipes are connected with tool joints by butt welding.

10. Carbon steel seamless steel pipes for ships (GB5213-85) are carbon steel seamless steel pipes for the manufacture of Class I pressure-resistant piping systems, Class II pressure-resistant piping systems, boilers and superheaters. The working temperature of the carbon steel seamless steel pipe wall does not exceed 450°C, and the working temperature of the alloy steel seamless steel pipe wall exceeds 450°C.

11. The seamless steel pipe for automobile half shaft casing (GB3088-82) is a hot-rolled seamless steel pipe of high-quality carbon structural steel and alloy structural steel for the manufacture of automobile half shaft casing and drive axle casing shaft pipe.

12. High-pressure oil pipes for diesel engines (GB3093-2002) are cold-drawn seamless steel pipes used to manufacture high-pressure pipes for diesel engine injection systems.

13. Precision inner diameter seamless steel tubes for hydraulic and pneumatic cylinders (GB8713-88) are cold-drawn or cold-rolled precision seamless steel tubes with precise inner diameters for the manufacture of hydraulic and pneumatic cylinders.

14. Cold-drawn or cold-rolled precision seamless steel pipe (GB3639-2000) is a cold-drawn or cold-rolled precision seamless steel pipe with high dimensional accuracy and good surface finish for mechanical structures and hydraulic equipment.

15. Structural stainless steel seamless steel pipe (GB/T14975-2002) is a hot-rolled ( extrusion, expansion) and cold drawn (rolled) seamless steel tubes.

16. Stainless steel seamless steel pipes for fluid transportation (GB/T14976-2002) are hot-rolled (extruded, expanded) and cold-drawn (rolled) seamless steel pipes made of stainless steel for fluid transportation.