• Jiangsu Hongbao Group Co., Ltd.
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  • Jiangsu Hongbao Group Co., Ltd.
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Contact Person : Angela
Phone Number : 86-512-58715276
Whatsapp : +8615895686919

ST52 ST45 ST35 EN10305 Precision Steel Tubes Mechanical Welded Steel Tube

Place of Origin Jiangsu, China
Brand Name Hongbao
Certification TS16949, ISO9001
Model Number HBWS-001
Minimum Order Quantity 2MT
Price Negotiable
Packaging Details Packaging: Wooden cases
Delivery Time Negotiable
Supply Ability 800MT/Month

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Whatsapp:0086 18588475571

Wechat: 0086 18588475571

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Product Details
Material St52, St45, St35 Length Random Or Fixed Length
Shape Round Technical Seamless Or Welded
Standard EN10305-1, EN10305-2 Etc Name Seamless Steel Pipe
High Light

welded steel pipe


cold drawn welded tubes

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Product Description

ST52 ST45 ST35 EN10305 Precision Steel Tubes Mechanical Welded Steel Tube


DOM is a process that is applied to tubing after it is initially constructed.It is refferred to as Seamless ,It can be said that do seamless process method on ERW tubes,So the tubes will have a high strength ,high quality .Material form E155 E195 E235 E275 E355 1020 1026 and so on .DOM tubing is commonly use in auto parts


Quick Details

Standard: EN10305-1, EN10305-2, EN10305-4, etc.

Grade: St52, St45, ST35

Thickness: 0.5-15 mm

Section Shape: Round

Outer Diameter(Round):4-120 mm

Place of Origin: Jiangsu, China (Mainland)

Technique: Cold Drawn

Certification: TS16949, ISO9001

Alloy Or Not: Non-alloy

Material: ST35,ST45,ST52

Secondary Or Not: Non-secondary


Production Process:
Cold rolling by Cold pilger machine and Cold rolling machine


 Deliver condition:
1). +C No heat treatment after the final cold drawing process
2). +LC After the final heat treatment there is a suitable drawing pass
3). +SR After the final cold drawing process there is a stress relieve heat treatment in a controlled atmosphere
4). +A After the final cold drawing process the tubes are annealed in a controlled atmosphere
5). +N After the final cold drawing operation the tubes are normalized in a controlled atmosphere


Production Method:
The cold drawn 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.

Advantage (compare with seamless cold drawn tube):
Better shape
Improved quality surface
Tight Excentricity and wall thickness tolerances (the eccentric
Tube more safety
Good toughness at low temperature
USA Market: 90% of the cylinder in the USA market are produced with welded tubes
Cost fix Lengths More Cheaper


Application: for car parts

ST52 ST45 ST35 EN10305 Precision Steel Tubes Mechanical Welded Steel Tube 0ST52 ST45 ST35 EN10305 Precision Steel Tubes Mechanical Welded Steel Tube 1





Q: Are you trading company or manufacturer ?


A: We are factory/manufacture.

Q: How long is your delivery time?

A: Generally it is 5-10 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What is your terms of payment ?

A: 30% T/T in advance ,balance before shippment or BL at sight.


If you have another question, pls feel free to contact us.