TORICH Good Quality Mechanical Properties Round Welded Steel Tube Manufacturers

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Quick Details
ASTM A513-2007, DIN EN 10305
Grade Group:
10#-45#, Q195-Q345, ST35-ST52
10#, 20#, Q235, Q345, Q195, Q215, St37, St52, St45, St37-2, St52.4, ST37.4
1 - 35 mm
Section Shape:
Outer Diameter(Round):
6 - 350 mm
Place of Origin:
Zhejiang, China
Hydraulic Pipe, Auto Parts
Cold Drawn
ISO 9001 TS16949 ISO 14001
Surface Treatment:
Special Pipe:
Drawn Over Mandrel
Alloy Or Not:
Precision Cold Drawn Tube
Production Method:
Drawn Over A Mandrel (DOM)
Product name:
Welded Steel Tube
Carbon Steel
Weld Seam Removed
Internal Contral
EN10204 3.1B
Cutting and Chamfering
Supply Ability
Supply Ability:
60000 Metric Ton/Metric Tons per Year Welded Steel Tube
Packaging & Delivery
Packaging Details
Welded Steel Tube In hexagonal bundles and In wooden boxes packaging.

TORICH Good Quality Mechanical Properties Round Welded Steel Tube Manufacturers


EN10305-2 Cold Drawn Welded Precision Steel Tubes DOM tubing E155,E195,E235,E275,E355 +C +LC +SR +A +N

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 . 


Production Process: 
Cold rolling by Cold pilger machine and Cold rolling machine
Size: 6-350mm

WT: 1.0-35mm

1. Standard: 
EN10305-2 Cold Drawn Precision Seamless Steel Pipes

2. Steel Grade: 
E155,E195,E235,E275,E355, other materials upon agreement with customers.

3. Production method: 
Cold drawn on the welded steel tubes, to reach high accuracy on the OD and WT tolerance


4. Packing: 
In Hexagonal Bundles, with anti-rust oil protection, with seaworthy packing 

5. 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


Detailed Images


1~ Incoming Raw Material Inspection
2~ Raw Material Segregation to avoid steel grade mix-up
3~ Heating and Hammering End for Cold Drawing
4~ Cold Drawing and Cold Rolling, on line inspection
5~ Heat Treatment, +A, +SRA, +LC, +N, Q+T
6~ Straightening-Cutting to specified length-Finished Measuring Inspection
7~ Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness,                  Impact, Mictrostruture etc
8~ Packing and Stocking.

Q: Are you trading company or manufacturer ?

A: A professional steel pipes materials inventor, manufacturer and solution provider

Q: How long is your delivery time?

A: Generally it is 7-14 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 need pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us

TORICH Good Quality Mechanical Properties Round Welded Steel Tube Manufacturers

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