What is the difference between welded steel pipe and seamless steel pipe


Release Date:

24 Mar,2023

Welded pipe, also known as welded steel pipe, is basically a steel pipe made of steel sheets or strips that have been rolled into shape and then welded. Since the 1930s, with the rapid development of you quality strip steel continuous rolling production and welding and inspection technology advances, the quality of the weld seam continues to improve, the increasing variety of welded steel pipe specifications, and in more and more areas instead of seamless steel pipe. Welded steel pipe according to the form of welded seam is divided into straight seam welded pipe and spiral welded pipe.

Welded pipe, also known as welded steel pipe, is basically a steel pipe made of steel sheets or strips that have been rolled into shape and then welded. Since the 1930s, with the rapid development of you quality strip steel continuous rolling production and welding and inspection technology advances, the quality of the weld seam continues to improve, the increasing variety of welded steel pipe specifications, and in more and more areas instead of seamless steel pipe. Welded steel pipe according to the form of welded seam is divided into straight seam welded pipe and spiral welded pipe.

A, the classification of welded pipe

Welded pipe by application classification method: according to the use of the general welded pipe, galvanized welded pipe, oxygen blowing welded pipe, wire casing, metric welded pipe, roller tube, deep-well pump tube, automotive tube, transformer tube, welded thin-walled tube, welded shaped pipe and spiral welded pipe.

Second, the application range of welded pipe

Welded pipe products are widely used in boilers, automobiles, ships, light structure of building with doors and windows steel, furniture, various agricultural machinery, scaffolding, wire threading pipes, high-rise shelves, containers, etc.. All can meet customer requirements, special specifications welded pipe can be processed according to user requirements.

Key words: API standard seamless oil casing, API standard seamless oil pipe, API splice, API oil casing short section, screen pipe