June 3, 2021

The production process of SSAW

Spiral steel pipe is a kind of spiral seam steel pipe which is made of strip steel coil as raw material, often formed by warm extrusion and welded by automatic double-wire double-side submerged arc welding process. (1) raw materials that is, strip coil, welding wire, flux.They are subjected to strict […]
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May 31, 2021

Carbon peak carbon neutral Chinese steel to explore the world’s forefront

“The steel industry will play a vital role in controlling global warming.” “We should not only pay attention to whether there is overcapacity, but also whether there is enough green capacity.” “The breakthrough technology we’re talking about here is still unproven or even uninvented at this point.” … At the […]
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May 26, 2021

“Crazy” steel cooling is expected to return to normal levels in June

When steel prices soar, the mills make a lot of money, but at the bottom of the stream, they lose money, and the industries associated with steel are affected to a greater or lesser extent.Steel mills say price increases are falling so fast that downstream retailers can’t keep up.Unexpected soaring […]
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May 18, 2021

Material classification of oil transmission pipeline

1, carbon steel pipe The fixed oil pipeline multi-purpose carbon steel pipe, carbon steel pipe according to its manufacturing method can be divided into seamless steel pipe and welded steel pipe, seamless steel pipe is divided into hot rolled and cold drawing two, usually the carbon steel pipe is made […]
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May 11, 2021

Definition, purpose and characteristics of ERW

ELCCTRIC REsistancc Welding (ERW) is a form of resistance Welding. After the hot rolled sheet is formed by the forming machine, the steel coil is deformed into a smooth cylindrical tube blank. When the high frequency current passes through the V-shaped load loop of the open tube blank, due to […]
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May 6, 2021

Submerged arc welding steel pipe standard and its classification

pressure fluid conveying with spiral submerged arc welding steel pipe (SY5036-83) is mainly used in oil and gas pipeline, high pressure fluid conveying with spiral weld high-frequency welded steel pipe (SY5038-83), high frequency welding spiral weld steel pipe (hf lap method) and spiral seam high frequency welded steel pipe (pressure […]
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April 26, 2021

Straight seam submerged arc welded pipe is more suitable for long distance pipeline

Straight seam submerged arc welded pipe is a kind of JCOE steel pipe forming material. Using JCOE steel pipe forming, one weld, submerged arc welding process, specifications from 325mm to 1420mm.When the diameter of straight submerged arc welding pipe is greater than 914.4, the standard allows two straight welds.Straight-seam submerged […]
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April 15, 2021

Dry!Do you know the cold knowledge about stainless steel welded pipe?

Stainless steel welded pipe, referred to as welded pipe, commonly used steel or steel strip after the unit and mold crimping forming welded steel pipe. Welded steel pipe has the advantages of simple production process, high production efficiency, many varieties and specifications and less equipment investment, but its general strength […]
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