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Eddy's current non-destructive testing method for welding seam of spiral steel pipe

Eddy's current non-destructive testing method for welding seam of spiral steel pipe

Keywords :Eddy's current non-destructive testing method for welding seam of spiral steel pipe        Update : 2022-06-13        View(s) : 784

As an efficient special means of transportation, pipeline transportation has played an increasingly important role in the fields of oil and natural gas transportation. At present, domestic large-diameter transportation pipelines are mainly constructed with spiral welded steel pipes . To ensure the ...

Three welding techniques for stainless steel welded pipes

Three welding techniques for stainless steel welded pipes

Keywords :Three welding techniques for stainless steel welded pipes        Update : 2022-06-10        View(s) : 872

Stainless steel welded pipe technology - argon arc welding Stainless steel welded pipes require deep penetration, no oxide inclusions, and as small a heat-affected zone as possible. Tungsten inert gas shielded argon arc welding has good adaptability, high welding quality, and good penetratio...

How is the spiral seam submerged arc welded steel pipe used for anti-corrosion

How is the spiral seam submerged arc welded steel pipe used for anti-corrosion

Keywords :How is the spiral seam submerged arc welded steel pipe used for anti-corrosion        Update : 2022-06-09        View(s) : 740

1. Mainly use tools such as wire brushes to grind the surface of the steel. The cleaning and preheating of the spiral welded steel pipe can remove the loose or warped scale, rust, welding slag, etc. The rust removal of hand tools can reach the Sa2 level, and the rust removal of power tools can...

What are the factors that cause horizontal stripes in spiral seam submerged arc welded steel pipes

What are the factors that cause horizontal stripes in spiral seam submerged arc welded steel pipes

Keywords :What are the factors that cause horizontal stripes in spiral seam submerged arc welded steel pipes        Update : 2022-06-08        View(s) : 896

The first may be due to the stress of the spiral seam submerged arc welded steel pipe . That is, the residual stress and welding stress after the steel pipe is formed. Secondly due to the presence of hydrogen. If the flux is not dried enough, the preheating temperature is not sufficient or the pr...

The difference between straight seam welded pipe and spiral welded pipe

The difference between straight seam welded pipe and spiral welded pipe

Keywords :The difference between straight seam welded pipe and spiral welded pipe        Update : 2022-06-07        View(s) : 1

Metallurgical Properties of Fabrication Materials The raw material of the spiral welded pipe is a hot-rolled coil, and the straight seam welded pipe is made of a steel plate socket. The weight of the alloy contained in the coil is less than that of the steel plate, and it is for this reaso...

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