According to different welding methods, it can be divided into arc welding pipe, high frequency or low frequency resistance welding pipe, gas welding pipe, furnace welding pipe, Bondi pipe, etc.

Electric welded steel pipe: Used in oil drilling and machinery manufacturing.

Furnace welded pipe: can be used as water and gas pipe, big mouth straight seam welded pipe for high pressure oil and gas transmission, etc.; 

Spiral welded pipe is used for oil and gas transmission, pipe pile, bridge pier, etc.

Classification by weld shape

It can be divided into straight welded pipe and spiral welded pipe

Straight seam welded pipe: Simple production process, high production efficiency, low cost, rapid development.