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Rust removal and maintenance method of straight seam welded pipe

Rust removal and maintenance method of straight seam welded pipe

Keywords :Rust removal and maintenance method of straight seam welded pipe        Update : 2022-06-14        View(s) : 796

The maintenance of straight seam welded pipe equipment has become a headache. Straight seam welded pipe equipment plays an important role in life and work. It is generally required that the surface of the straight seam welded pipe fittings reach a near-white level (Sa2.5). The practice has pro...

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) : 700

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) : 790

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) : 663

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) : 811

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...

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