Welded pipe, also known as welded Steel pipe, is basically a steel pipe made by welding steel or strip steel after crimping. Welded steel pipes have simple production process, high production efficiency, and many varieties and specifications, but their general strength is lower than seamless steel pipes. Since the 1930s, with the rapid development of high-quality strip continuous rolling production and the advancement of welding and inspection technology, the quality of welds has been continuously improved, and the variety and specifications of welded steel pipes have increased, and welded steel pipes have replaced non-free products in more and more fields.
Welded steel pipes are divided into straight seam welded pipes and spiral welded pipes according to the form of welds.
According to the purpose, welded steel pipes are divided into general welded pipes, galvanized welded pipes, oxygen-blowing welded pipes, wire casings, metric welded pipes, roller pipes, deep well pump pipes, automotive pipes, transformer pipes, electric welded thin-walled pipes, and electric welded special-shaped pipes and spiral welded pipe.
Welded pipe steel pipes are widely used in light-weight steel doors and windows for boilers, automobiles, ships, buildings, furniture, various agricultural machinery, scaffolding, wire threading pipes, high-rise shelves, containers, etc.
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