Good Quality Cold Formed Spiral Steel Pipe Carbon High Strength Square Steel Pipes

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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
13.2 - 166.1 mm
Section Shape:
Outer Diameter:
Place of Origin:
Zhejiang, China
Hydraulic Pipe
Cold Drawn
ISO9001 TS 16949 ISO14001
Surface Treatment:
Special Pipe:
Alloy Or Not:
Square Tubes
Processing Service:
Punching, Cutting
Secondary Or Not:
Precision Cold Drawn Tube
Production Method:
Drawn Over A Mandrel (DOM)
High Strength Square Steel Pipes
Supply Ability
Supply Ability:
5000 Ton/Tons per Year High Strength Square Steel Pipes
Packaging & Delivery
Packaging Details
High Strength Square Steel Pipes Packed In bundles packaging

Good Quality Cold Formed Spiral Steel Pipe Carbon High Strength Steel Pipes


Size OD 13.2-166.1mm WT:1.8 -5.4 other size is also available.
Application:For ordinary service.
high strength steel pipes
Process of Manufacture:Tubes may be either welded or seamless

Material: Tubes shall be manufactured from steel which show,Not more than 0.045 percent of sulfur and not more than 0.045 percent of phosphorus .Carbon equivalent as calculated from the following equation shall not exceed 0.4

Carbon equivalent =C+Mn/6
Lengths or strips cut from selected tubes and tested in accordance with AS 1391 shall show-
(a)minimum yield strength of 195Mpa
(b)a tensile strength of between 320Mpa and 460Mpa
(c)an elongation of not less than 20percent on a gauge length of 5.65 √S0 Where S0 is the original cross-section area of the test piece.


Related standard :
AS1355 Glossary of terms used in connection with water and sanitary plumbing and drainage installations
AS 1391 Methods for tensile testing of metals
AS 1650 Galvanized coating
AS 1722 Pipe threads of whitworth form
AS 1722.1 Part 1:Sealing pipe threads
AS 1835 Tubes for pressure purpose-Seamless steel
AS 1836 Tubes for pressure purposes-Welded steel
AS 2084 Non-destructive testing-Eddy current testing of metal tubes
BS 65 Carbon steel tubes suitable for screwing in accordance with ISO 7/1

Standard lengths When so ordered, tubes shall be supplied in standard lengths of 50±0.08mm
Exact lengths Where exact lengths are specified, either for threaded tubes or for plain end tubes, each tube shall be within +8,0mm of the specified length.

Tubes ordered galvanized before threading




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

Good Quality Cold Formed Spiral Steel Pipe Carbon High Strength Steel Pipes