Carbon Alloy Steel
  • Carbon Alloy Steel

Product details

S235JR is a non-alloy structural steel widely used in the manufacture of steel products. Due to its high tensile strength and other mechanical properties, it is considered one of the best grades for manufacturing. These square tubes are known for their high tensile strength, durability, workability, expected functional life, formability, dimensional accuracy and ductility. They are designed in such a way that they can even easily meet the needs of various applications.

Testing and packaging

In order to understand the quality and performance of these tubes, a large number of inspections and tests have been carried out. All these tests and inspections are carried out under different temperatures and environments . Testing includes flaring test, third party inspection, visual inspection, macro and micro test, flattening test and radiographic test. There are some tests that can be done more, such as destructive testing, non-destructive testing and chemical composition analysis.

The entire testing process is carried out under the strict supervision of experts, and the test certificate has been obtained .


S235JR tube is famous for its outstanding performance and characteristics , and is widely used in many industries and applications. These products are one of the most demanding products of leading manufacturers and suppliers in the United Steel Co., Ltd. production . As the most famous and leading manufacturer, we ensure that all our products are reasonable and provide the best performance. The manufacture of these square tubes must take into account established industry regulations and customer requirements.

And make sure that users respond to the application. If we discuss materials, the raw materials used to make these tubes are purchased from the best market suppliers . We test and inspect materials to make them perform best in their respective work areas. In addition, advanced technology and the latest machines are used to manufacture these tubes . With it, national and global specifications can be added to the material to produce high-quality pipes. We provide square tubes of various shapes and sizes according to customer needs and requirements.

S235JR steel square pipe specifications:

Product Category

EN-10025-2 S235JR class square tube


15x15mm-600x600mm / 20x30mm-600x800mm

Wall Thickness

1.2mm-20mm, SCH30, SCH40, STD, XS, SCH80, SCH160, XXS, etc.


Expected 12m

Steel Material



BS EN10296,BS EN10025,BS EN10297,BS6323,BSEN10219,BSEN10217,GB / T13793-1992,GB / T14291-2006,GB / T3091-1993,GB / T3092-1993,GB3640-88


For structure, decoration and construction

Surface Treatment

Bare coating, black paint (varnish coating), galvanized, oiled, 3 PE, FBE, corrosion-resistant coating


Electronic resistance welding (ERW), electronic resistance welding (EFW)

Section Shape

Square and rectangle


Bundled, bulk, bagged square galvanized hollow tube, customer requirements

S235JR square tube equivalent grade:

United States

German DIN, WNr

Japanese JIS

French AFNOR

England BS

Canadian HG

European old EN

Belgium NBN

Spain UNE

1015 A283C SSGr.33

RSt37-2 St37-2

SM400A SS400


40A 40B

230 grams

Fe360B Fe360BFN S235JRG2



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