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Threeway Steel Co., Ltd

E-mail: sales@srtsteelpipe.com

Address: 22nd Floor, Royal Wing Tower, Long Champ International Building, No.9 Xiangfu Road, Changsha, Hunan, China, PC: 410116

Phone:0086-731-8873-9521  

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ERW,SSAW and LSAW

Keywords :        Update : 2016-11-17        View(s) : 2052

Straight seam high frequency (ERW) by welding and induction welding is divided into different forms of contact of two welding, hot-rolled wide coil as raw material, through pre-bending, continuous forming, welding, heat treatment, sizing, straightening, cutting, etc. step short compared to the spira...

Large-diameter Welded Pipe

Keywords :        Update : 2016-11-16        View(s) : 2140

Large-diameter welded pipe is the pipe welds, raw materials are mainly steel sheet and strip, large diameter straight seam welded steel pipe is used, the higher productivity of the kinds of steel, more used in more low-cost steel products one. Large diameter spiral welded steel pipe is used, c...

Piling Pipe Production Process

Keywords :        Update : 2016-11-15        View(s) : 1784

Piling pipe   use Spiral Pipe is a strip coil as raw material, often warm extrusion molding, automatic double wire-sided submerged arc welding process welded spiral seam steel pipe. (1) raw materials that strip, wire, flux. We must go through rigorous physical and chemic...

Standards For API 5L Steel Pipe

Keywords :        Update : 2016-11-11        View(s) : 124

The American Petroleum Institute(API), founded in 1919, is the largest petroleum and natural gas industry association in the United States. The main contribution of API  is to develop a series of standards for oil and gas industry in accordance with legislative and environmental requireme...

The Advantages of Spiral Steel Pipe Strength

Keywords :        Update : 2016-11-10        View(s) : 1819

Pipe under internal pressure, usually on the wall there are two main stress, namely the radial stress delta Y and delta X axial stress. Synthetic stress of the weld of the delta delta Y = (l / 4 sin2 alpha + cos2 alpha) 1/2, among them, the alpha for spiral welded pipe weld spiral Angle. Weld s...

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