S235jrh SSAW Pipe Welded Steel Pipe
S235jrh SSAW Pipe Welded Steel Pipe suppliers
S235jrh SSAW Pipe Welded Steel Pipe factory

S235jrh SSAW Pipe Welded Steel Pipe

S235JRH SSAW spiral submerged arc welded pipe achieves excellent pipe structure balance through spiral forming process, and forms a deep penetration high-strength weld with submerged arc welding technology, giving it excellent pressure bearing capacity and economic benefits in large-diameter structures.

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Product Introduction

Introduction to S235jrh SSAW Welded Steel Pipe

S235JRH SSAW welded steel pipe is a structural steel pipe produced using spiral submerged arc welding technology. Its material conforms to the European standard EN 10219-1, possessing a yield strength of not less than 235MPa and good cold bending performance. This product combines spiral forming technology with double-sided submerged arc welding to create a continuous and uniform weld structure, exhibiting high pipe rigidity, strong dimensional flexibility, and stable pressure-bearing performance. It is widely used in building structural support, fluid transport pipelines, and large-scale engineering pile foundations.

Product name	Longitudinally Submerged Arc Welding Pipe
Outer diameter	406mm- 1626mm (16"- 64")
Wall thickness	6.0-44.5mm
Length	3-18m( adjustable according to client's requirement)
Standard	API,DNV,ISO,DEP,EN,ASTM,DIN,BS,JIS,GB,CSA
Grade	API 5L : Gr.B, X42, X46, X56, X60, X65, X70 ASTM A53: Gr.A, Gr.B, Gr.C EN: S275, S275JR, S355JRH, S355J2H
Surface treatment	Black painting, Varnish painting, bare pipe, Oiled, Hot dip galvanized
End	Beveled end,plain end meet your need

Tolerance of Outside Diameter and Wall Thickness

Types	Standard
Types	SY/T5040-2000	SY/T5037-2000	SY/T9711.1-1977	ASTM A252	AWWA C200-97	API 5L PSL1
Tube end OD deviation	±0.5%D	±0.5%D	-0.79mm~+2.38mm	<±0.1%T	<±0.1%T	±1.6mm
Wall thickness	±10.0%T	D<508mm, ±12.5%T	-8%T~+19.5%T	<-12.5%T	-8%T~+19.5%T	5.0mm
Wall thickness	±10.0%T	D>508mm, ±10.0%T	-8%T~+19.5%T	<-12.5%T	-8%T~+19.5%T	T≥15.0mm, ±1.5mm

Heat Treatment of S235JRH Spiral Submerged Arc Welded Pipe

After welding, S235JRH SSAW welded pipe typically requires localized normalizing heat treatment of the weld area. This is because the weld and heat-affected zone undergo rapid heating and cooling during welding, resulting in coarse grains, uneven microstructure, and residual welding stress in this area. Normalizing (heating the weld to an appropriate temperature above Ac3 followed by air cooling) refines the grains and homogenizes the microstructure in this area, significantly improving its plasticity and toughness, and effectively eliminating welding stress. This ensures that the mechanical properties of the weld match those of the base material (S235JRH), enhancing the overall structural stability and pressure-bearing reliability of the pipe.

About our company

We are a professional trading company specializing in the export of steel and industrial products, committed to providing global clients with one-stop sourcing solutions. We have established solid partnerships with many high-quality domestic manufacturers, and our main products cover construction steel, welded steel pipes, steel structure products, etc., strictly adhering to international quality standards.

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