• Jiangsu Hongbao Group Co., Ltd.
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  • Jiangsu Hongbao Group Co., Ltd.
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Phone Number : 86-512-58715276
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Stress Relieved Welded Carbon Steel Pipe Cutting 7mm Thickness To Specified Length

Place of Origin Jiangsu, China
Brand Name Hongbao
Certification DNV,ISO,TS16949
Model Number HBPST-1
Minimum Order Quantity 1 ton
Price Negotiable
Packaging Details seaworthy plywooden case packing.
Delivery Time within 50 days

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Product Details
Material E355,E235,26MnB5,34MnB5 Brand Hongbao
Certificate ISO,TUV,TS16949 Origin Jiangsu,China
Thickness 0.5-7mm OD 6-80mm
High Light

precision seamless tubing


erw precision tubes

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Product Description

EN10305-2 Welding Welded Cold Drawn Carbon Steel Tube For Precision Applications


Steel Grade Minimum values for the delivery condition
Steel name Steel number + C + LC + SR + A + N
Rm Mpa A% Rm Mpa A% Rm Mpa ReH Mpa A% ReH Mpa A% Rm Mpa ReH Mpa A%
E215 1.0212 430 8 380 12 380 280 16 280 30 290-430 215 30
E235 1.0308 480 6 420 10 420 350 16 315 25 340-480 235 25
E355 1.0580 640 4 580 7 580 450 10 450 22 490-630 355 2


Delivery Conditions:

+C Hard. No final treatment after final cold drawing.

+LC Soft. Final heat treatment is followed by a suitable drawing pass (limited reduction of area).

+SR Stress Relieved. After final cold drawing, the tubes are stress relieved in a controlled atmosphere.

+A Annealed. After final cold drawing, the tubes are annealed in a controlled atmosphere.

+N Normalized. After final cold drawing, the tubes are normalized in a controlled atmosphere.



The cold rolled welded tube is produced by drawing ERW (electric resistance welded tube).During this process the sizing (wall thickness, inside and outside diameter), as well as weld integrity and surface finish is closely controlled to produce tube of the required size and mechanical property characteristics.


Tube Finishing Options:

Our tubes can be additionally treated to achieve the exact finishes and ends needed by customers. These are some of the additional operations that can be performed on our tube:Drawing, Heat treatment, Bulging, Swaging, Cutting, Deburring, Vibro cleaning, Threading,De-rusting, Chamfering, Washing.


Standard AND Optional Testing:

Visual and dimensional test 100%.

Eddy current test 100% acc. to EN 10246-3.

Ultrasonic test 100% acc. to EN 10246-7.

Chemical composition.

Impact test.