Welding Black Iron Pipeline

Welding Black Iron Pipeline

Commodity name Best selling 3 inch erw black
welded iron steel pipe weight
Out diameter: 500-1600mm
Thickness: 30mm-140mm
Length: 2-6 meter/pc
Producing Standard: ASTM A53; EN10219-2006; GB/13793-2008;
GB/3091-2008,GB/9711 or according to technical protocol
Main Material: ASTM A 53, A106; Q195-Q235, 20#,
Q125, Q345 (B, C), L175-L555 (A, B, X42-X80),
J55, K55, N80, L80, C90, C95, P110 etc
Technology: SSAW (Spiral Submerged Arc Welding)
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Product Details


Product Details

Welding Black Iron Pipeline With the development of national economy, especially the development of the western region and the implementation of the west-east gas transmission project, the demand for large-diameter high-frequency induction direct-seam welded steel pipes is increasing



Brief Introduction

Welding Black Iron Pipeline


1. Commodity:

Best selling  3 inch erw black welded iron steel pipe weight

2. Out diameter:

500-1600mm

3. Thickness:

30mm-140mm

4. Length:

2-6 meter/pc

5. Producing Standard:

ASTM A53; EN10219-2006; GB/13793-2008;   GB/3091-2008,GB/9711 or according to technical protocol

6. Main Material:

ASTM A 53, A106; Q195-Q235, 20#, Q125, Q345 (B, C), L175-L555 (A, B, X42-X80), J55, K55, N80, L80, C90, C95, P110 etc

7. Technology:

SSAW (Spiral Submerged Arc Welding)

8. Surface treatment:

Paint oil or brush varnish/paint.

9. Package:

Naked package or according to customer’s requirements.

10. Usage:

Structural pipe or for support usage etc

11. Certificate:

ISO9001-2000, ISO14000, ISO18000

12. Third party inspection:

Welcome you to send a third party inspecting company (BV, SGS etc) to check the quality of our final products.


With the development of Welding Black Iron Pipeline national economy, especially the development of the western region and the implementation of the west-east gas transmission project, the demand for large-diameter high-frequency induction direct-seam welded steel pipes is increasing, and the application field of weld annealing is also gradually expanding. As one of the deep processing of large-diameter steel pipes, weld annealing technology has been paid more and more attention.High strength thin - walled steel pipe can be produced by weld annealing.Weld online dynamic is the induction heating coil annealing equipment as the main components of continuous tube welding machine, the welding and has just above its critical temperature quenching of weld heat, for steel pipe welding seam annealing in order to prevent the potential weld crack, the resulting fine grained organization guarantee satisfied all the standard specifications of the strong steel pipe.


The dynamic annealing of the welding seam of steel tube can be carried out in two ways: one is the overall annealing. Because the whole steel tube needs to be heated to above the critical temperature, the annealing power is very large, so the overall annealing mode is only suitable for small diameter steel tube.Another kind is done directly by plane sensor weld annealing, due to the heating heat concentrated on weld width is about 4 times, within the scope of the heating power is small, so need weld annealing cost is low, due to the rapid local heating of the weld seam at the same time, make steel tube oxidation and deformation are minimal, accurate and consistent diathermy also makes the entire weld area are fine grained organization, so as to achieve the requirements of the annealing process, improve weld pipe comprehensive mechanical properties, improve the service life of the welded pipe.




The Process Flow


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The Application


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The Workshop

Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.

 has more than ten years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation. 


We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel coiled pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.



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