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Cold-drawn or cold-rolled precision seamless steel tubesGB/T3639

Short Description:

Product material:

10# 20# 30# 45# Q345B

Product applied standard:

GB/T3639-2009

Finished products package:

Steel belt hexagonal package/plastic film/woven bag/sling package

 


Product Detail

Product Tags

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Cold-drawn or cold-rolled precision seamless steel tubes

Product material 10#  20#  30#  45#  Q345B
Product specification
Product applied standard GB/T3639-2009
Delivery status
Finished products package Steel belt hexagonal package/plastic film/woven bag/sling package

Product Manufacturing Process

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Tube blank

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

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Sawing

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Perforation

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Thermal inspection

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Pickling

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Grinding inspection

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Lubrication

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Cold drawing

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Lubrication

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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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Cold drawing/hard +C or cold drawing/soft +LC or cold drawing and stress relieved +SR or annealing +A or normalization +N (selected according to customer’s needs)

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Performance test (mechanical property, impact property, flattening, and flaring)

la-zhi

Straightening

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Tube cutting

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Non-destructive testing

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Hydrostatic test

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Product inspection

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Immersion of anti-corrosive oil

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Packaging

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Warehousing

Product Manufacturing Equipment

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

XS-22

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

Chemical equipment, ships, pipelines, automotive parts, and mechanical design applications

Seamless Tubing

By definition seamless tubes are completely homogenous tubes, the properties of which give seamless tubing more strength, superior corrosion resistance, and the ability to withstand higher pressure than welded tubes. This makes them more suitable in critical applications in harsh environments, but it comes with a price.

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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