According to different welding methods, it can be divided into arc welding, high-frequency or low-frequency resistance welded pipe, gas welded pipe, furnace welded pipe, Bondi pipe, etc.
Welded steel pipe: used in oil drilling and production and machinery manufacturing.
Furnace welded pipe: it can be used as water gas pipe, large diameter straight seam welded pipe for high-pressure oil and gas transportation, etc; Spiral welded pipe is used for oil and gas transportation, pipe pile, pier, etc.
According to the weld shape, it can be divided into straight welded pipe and spiral welded pipe
Straight welded pipe: simple production process, high production efficiency, low cost and rapid development.
Spiral welded pipe: the strength is generally higher than that of straight welded pipe. It can produce welded pipe with larger pipe diameter with narrow blank, and can also produce welded pipe with different pipe diameters with blank of the same width. However, compared with the straight seam pipe with the same length, the weld length increases by 30 ~ 100%, and the production speed is low. Therefore, straight seam welding is mostly used for smaller diameter welded pipes, and spiral welding is mostly used for large diameter welded pipes.
Post time: Jan-19-2022