API 5L Steel Tube

Surface： Plain/Beveled/Thread/Coupling/ Pipe Cap

Specification ： 2-60mm* and OD8-600mm

Thickness： 2-60mm

ERW welding round Tube also are called as Electric Resistance Welded Tubes. Resistance welded steel tube is divided into AC welded steel tube and DC welded steel tube two forms.

Ac welding is divided into low frequency welding, medium frequency welding, super medium frequency welding and high frequency welding according to different frequencies. High-frequency welding is mainly used for the production of thin-walled steel tubes or ordinary thick steel tubes, and high-frequency welding is divided into contact welding and induction welding. Dc welding is generally used for small diameter steel tubes.

Surface： Plain/Beveled/Thread/Coupling/ Pipe Cap

Length： X42， X46 ，X60

Thickness： 2-60mm

Length ： 1000-12000mm or as Request

Material：Q195-Q235, Ss400, St37-2, Stk500, Q235A, Q235B

Od: 8-600mm

Specification ： 2-60mm* and OD8-600mm

For gas, gas, steam, liquefied petroleum gas. For structure: piling pipe bridge

Dock, road, building structural tube, etc.

The high-frequency welded pipe is included in the ERW welded tube, which is an ERW welded pipe produced by the high-frequency welding process. ERW straight seam welded tube is a steel tube with advanced product performance, leading quality and relatively economical in the field of oil and gas storage and transportation. ERW straight seam welded tube surface quenching and tempering heat treatment is usually carried out by induction heating or flame heating.

The main technical parameters are surface hardness, local hardness and effective hardening layer depth.

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