Nine categories for welded pipes by manufacturing process(1)

Welded pipe, one pipe the surface has the steel pipe joint, is now widely used in conveying water, sewage, gas, air, heating, steam and other low-pressure fluid and other uses. As for ERW steel pipe, it is only one category of welded pipe. So that we can have a view for the categories of Nine category.

ERW steel pipe:A kind of pipe rolled to become a pipe and welded using Electric Resistance Welding process.

(SSAW) Spiral submerged-arc welding steel pipe: its forward direction and forming pipe has reel molding angle (adjustable), side molding edge welding and weld them into a spiral.

(SAW) Submerged arc welding pipe: a common arc welding process.

(HFI) High frequency welded pipe: this is a welding process in which the heat source used to melt the joining surfaces is obtained from high-frequency (HF) alternating current (ac) resistance heating.

(LSAW) Long-Submerge-arc Welded: leaflets plate as raw material, the steel pipe in the mold or molding machine pressure (volume) into using double-sided submerged arc welding and flaring from production.

The steel pipe above can be supplied by Threewaysteel pipe company. And among these five categories, we would like to have a rank from ERW steel pipe, SSAW steel pipe, to LSAW steel pipe.