ERW Steel Pipe-

ERW Steel Pipe

Electric Resistance Welded steel pipe which is manufactured by cold forming a flat steel strip into a rounded tube and passing it through a series of forming rollers to obtain a longitudinal seam.

SAWL Steel Pipe-

SAWL Steel Pipe

LSAW steel pipe or SAWL steel pipe,i.e. Longitudinally Submerged Arc Welding Pipe, which can be used as a steel pipe for land and ocean natural gas transportation, shale gas, petroleum, petrochemical,etc.

HFW Steel Pipe-

HFW Steel Pipe

HFW steel pipe, i.e high -frequency electric welded pipes is another kind of welded steel pipes.