Different classifications of seamless steel pipes for cold drawn pipes
Sep 03, 2021
1. Seamless steel pipe for structure (GB/T 8162-2008) is a seamless steel pipe used for general structure and mechanical structure.
2. Seamless steel pipe for fluid transportation (GB/T 8163-2008) is a general seamless steel pipe used to transport water, oil, gas and other fluids.
3. Seamless steel pipes for low and medium pressure boilers (GB 3087-2008) are used to manufacture superheated steam pipes, boiling water pipes for low and medium pressure boilers of various structures, and superheated steam pipes, large smoke pipes, small smoke pipes and arches for locomotive boilers. High-quality carbon structural steel hot-rolled and cold-drawn (rolled) seamless steel pipes for brick pipes.
4. Seamless steel pipes for high-pressure boilers (GB 5310-2008) are high-quality carbon steel, alloy steel and stainless heat-resistant steel seamless steel pipes for the heating surface of water-tube boilers with high pressure and above.
5. High-pressure seamless steel pipes for fertilizer equipment (GB 6479-2013) are high-quality carbon structural steel and alloy steel seamless steel pipes suitable for chemical equipment and pipelines with a working temperature of -40 to 400 ℃ and a working pressure of 10 to 30 Ma. .
6. Seamless steel pipes for petroleum cracking (GB 9948-2013) are seamless steel pipes suitable for furnace tubes, heat exchangers and pressure pipes in petroleum refineries.
7. Seamless steel pipes for geological drilling (GB/T 9808-2008) are steel pipes used by geological departments for core drilling. They can be divided into drill pipes, drill collars, core pipes, casing pipes and sedimentation pipes according to their purposes.
8. Geological core drilling tools (GB/T 16950-2014) specify seamless steel pipes for geological core drilling tools.
9. Petroleum drilling pipe (YB 528-65) is a seamless steel pipe used for thickening inside or outside at both ends of oil drilling. There are two types of steel pipes: wire and non-wired. Wired pipes are connected by joints, and non-wired pipes are connected with tool joints by butt welding.
10. Carbon steel and carbon-manganese steel seamless steel pipes for ships (GB/T 5312-2009) are carbon steels and carbon-manganese steels used in the manufacture of Class I pressure piping systems, Class II pressure piping systems, boilers and superheaters. Seam the steel pipe. The working temperature of the carbon steel seamless steel pipe wall does not exceed 450℃, and the working temperature of the alloy steel seamless steel pipe wall exceeds 450℃.
11. Seamless steel tubes for automobile axle sleeves (GB 3088-82) are high-quality carbon structural steel and alloy structural steel hot-rolled seamless steel tubes for the manufacture of automobile axle sleeves and drive axle axle tubes.
12. High-pressure seamless steel pipes for diesel engines (GB/T 3093-2002) are cold-drawn seamless steel pipes used in the manufacture of high-pressure pipes for diesel engine injection systems.
13. Precision inner diameter seamless steel pipes for hydraulic and pneumatic cylinders (GB 8713-88) are cold-drawn or cold-rolled precision seamless steel pipes with precise inner diameters for the manufacture of hydraulic and pneumatic cylinders.
14. Cold-drawn or cold-rolled precision seamless steel tubes (GB/T 3639-2009) are cold-drawn or cold-rolled precision seamless steel tubes with high dimensional accuracy and good surface finish for mechanical structures and hydraulic equipment. The use of precision seamless steel pipes to manufacture mechanical structures or hydraulic equipment can greatly save machining man-hours, improve material utilization, and at the same time help improve product quality.
15. The structural stainless steel seamless steel pipe (GB/T 14975-2012) is a hot-rolled stainless steel made of corrosion-resistant pipes and structural parts and parts widely used in the chemical, petroleum, textile, medical, food, machinery and other industries. (Extruded, expanded) and cold drawn (rolled) seamless steel tubes.
16. Stainless steel seamless steel pipes for fluid transportation (GB/T 14976-2012) are hot-rolled (extruded, expanded) and cold drawn (rolled) seamless steel pipes made of stainless steel used to transport fluids.
17. Special-shaped seamless steel pipe is a general term for seamless steel pipes with cross-sectional shapes other than round pipes. According to the shape and size of the steel pipe section, it can be divided into equal wall thickness special-shaped seamless steel pipe (code D), unequal wall thickness special-shaped seamless steel pipe (code BD), and variable diameter special-shaped seamless steel pipe (code BJ). Special-shaped seamless steel pipes are widely used in various structural parts, tools and mechanical parts. Compared with round pipes, special-shaped pipes generally have larger moments of inertia and section modulus, and have greater bending and torsion resistance, which can greatly reduce structural weight and save steel. Commonly used standard: cold drawn special-shaped steel pipe (GB/T 3094-2012).
