GB standard for seamless steel pipe

[1] Seamless Pipes for Structural Use (GB/T8162-2008)

Designed for general structural and mechanical applications, these pipes ensure the stability and integrity of various structural components.

[2] Seamless Steel Pipes for Fluid Transportation (GB/T8163-2008)

These pipes are intended for transporting fluids such as water, oil, and gas, providing reliable and efficient flow under various conditions.

[3] Seamless Steel Tubes for Low and Medium Pressure Boilers (GB3087-2008)

Manufactured from high-quality carbon structural steel, these tubes are used in low and medium pressure boilers for superheated steam pipes, boiling water pipes, and locomotive boiler components.

[4] Seamless Steel Tubes for High-Pressure Boilers (GB5310-2008)

These high-quality carbon, alloy, and stainless heat-resistant steel tubes are used in water-tube boilers to withstand high pressures and temperatures.

[5] High-Pressure Seamless Steel Tubes for Chemical Fertilizer Equipment (GB6479-2000)

Suitable for chemical equipment and pipelines operating at temperatures from -40 to 400°C and pressures from 10 to 30 MPa, these pipes are made from high-quality carbon structural and alloy steels.

[6] Seamless Steel Pipes for Oil Cracking (GB9948-2006)

Used in petroleum refineries, these pipes are ideal for furnace tubes, heat exchangers, and other related applications.

[7] Geological Drilling Steel Pipes (YB235-70)

Utilized by geological departments for core drilling, these pipes include drill pipes, drill collars, core pipes, casing pipes, and sedimentation pipes, catering to various drilling needs.

[8] Diamond Core Drilling Seamless Steel Pipes (GB3423-82)

Specifically designed for diamond core drilling, these seamless pipes are essential for core rods and casing applications.

[9] Oil Drilling Pipes (YB528-65)

Used in oil drilling, these pipes are thickened at both ends for enhanced durability. They come in two types: threaded and non-threaded, with threaded pipes connected via joints and welded for strength.

[10] Carbon Steel Seamless Steel Tubes for Ships (GB5213-85)

These pipes are used in shipbuilding for Class I and II pressure piping systems, boilers, and superheaters, capable of withstanding temperatures up to 450°C for carbon steel and above 450°C for alloy steel.

[11] Seamless Steel Pipes for Automobile Half-Axle Casings (GB3088-82)

Manufactured from high-quality carbon and alloy structural steel, these hot-rolled pipes are used in the production of automotive axle bushings and drive axle housings.

[12] High-Pressure Fuel Pipes for Diesel Engines (GB3093-2002)

These cold-drawn seamless pipes are used in high-pressure fuel systems of diesel engines, ensuring reliable performance under high pressure.

[13] Precision Inner Diameter Seamless Steel Tubes for Hydraulic and Pneumatic Cylinders (GB8713-88)

These precision-drawn or cold-rolled seamless tubes have exact inner diameter dimensions, essential for the manufacture of hydraulic and pneumatic cylinders.

[14] Cold-Drawn or Cold-Rolled Precision Seamless Steel Pipes (GB3639-2000)

Used in mechanical structures and hydraulic equipment, these pipes have high dimensional accuracy and a smooth surface finish, reducing processing time and improving material utilization.

[15] Stainless Steel Seamless Pipes for Structural Use (GB/T14975-2002)

Made from hot-rolled stainless steel, these pipes are widely used in industries such as chemical, petroleum, textile, medical, and food for their corrosion-resistant properties.

[16] Stainless Steel Seamless Pipes for Fluid Transportation (GB/T14976-2002)

These pipes are used for conveying fluids, manufactured through hot rolling (extrusion, expansion) and cold drawing (rolling).

[17] Shaped Seamless Steel Tubes

These pipes come in various cross-sectional shapes other than round, including equal-wall thickness (D), unequal wall thickness (BD), and variable-diameter (BJ). They are used in structural parts, tools, and mechanical components, offering greater resistance to bending and torsion compared to round tubes.

[18] Seamless Steel Tubes for Low-Temperature Pipelines (GB/T18984-2003)

Designed for use in low-temperature pressure vessels and heat exchangers, these pipes can operate in temperatures ranging from -45°C to -195°C.