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Seamless steel tubes for structural purposeGB/T8162

Short Description:

Product material: 10/15/20/25/35/45/Q345B-C-D-E/Q460-C-D-E 20Cr/40Cr/20CrMo/30CrMo/35CrMo/42CrMo 20CrMnTi
Product applied standard: GB/T8162-2018
Finished products package: Steel belt hexagonal package/plastic film/woven bag/sling package

Product Detail

Product Tags


Seamless steel tubes for structural purpose

Product material 10/15/20/25/35/45/Q345B-C-D-E/Q460-C-D-E
Product specification
Product applied standard GB/T8162-2018
Delivery status
Finished products package Steel belt hexagonal package/plastic film/woven bag/sling package

Product Manufacturing Process

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Tube blank


Inspection (spectral detection, surface inspection, dimensional inspection, and macro examination)

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Thermal inspection

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Grinding inspection

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Cold drawing (the addition of cycled processes such as heat treatment, pickling and cold drawing should be subject to the specific specifications)

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Annealing or cold drawing or stress relieved or full annealing (selected according to customer’s requirements)

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Performance test (mechanical property, impact power test of Q460 according to customer’s requirements)



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Tube cutting

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Product inspection


Immersion of anti-corrosive oil

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Product Manufacturing Equipment

Shearing machine/sawing machine, walking beam furnace, perforator, high-precision cold-drawing machine, heat-treated furnace, and straightening machine


Product Testing Equipment

Outside micrometer, tube micrometer, dial bore gage, vernier caliper, chemical composition detector, spectral detector, tensile testing machine, Rockwell hardness tester, impact testing machine, eddy current flaw detector, ultrasonic flaw detector, and hydrostatic testing machine.

Product Applications

Mechanical structures and general engineering structures.

Why choose us

We provide seamless mechanical steel tubing products designed to thrive in demanding, high-stress applications. You find these products in automotive components where performance depends on reliability and quality. In addition, you find your seamless mechanical steel tubing for industrial applications - ranging from bearings to cylinders and gears - where toughness is essential for functionality. Oil and gas exploration is another common use for our seamless mechanical tubing, where durability and component life below the Earth's surface is paramount.

Package of carbon steel seamless pipe

Plastic caps plugged at the two sides of pipe ends
Should be avoided by the steel strapping and transport damage
Bundled sians should be uniform and consistent
The same bundle(batch) of steel pipe should be came from the same furnace
The steel pipe has the same furnace number,the same steel gradethe same specification

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