What Is Erw Pipe And All Kinds Of Erw Pipe

Welded metal pipe: also known as pipe, it is made by flexing metal sheet or strip

, and then welded. According to the weld type it is separated into Longitudinal and spiral pipe.

By end-use it is separated into common pipe, galvanized pipe, oxygen lance pipe, wire casing, metric pipe, roller pipe, deep well pump tubes, automobile tubes, transformers pipes, welding thin-walled tube, welding shape tube and spiral welded pipe.

General pipe: General pipe are used to transport low stress liquid, we also call it black pipe. Content is almost of Q195A, Q215A, Q235A. Or some other easily welded mild metal. Pipes must be performed the research of the stress, flexing, trimming and surface quality. Usually the submission duration is 4-10m, and often be needed to deliver special duration (or dual length). Specifications of welded pipe with affordable size (millimeters or inches) are different with the actual. As to the walls width of pipe, there are common metal pipe and thicker steel pipe. By the way of pipe end, there are sub-threaded and threaded. With the technology of welded metal pipe to enhance and handling be more simply, some welded pipe can replace part of the seamless pipe. And we can generate pipe of outer size up to 219mm (8 inch) right now.

Galvanized steel pipe: in order to enhance the deterioration level of resistance of steel pipe, we always coat some zinc oxide on the outer area of common steel pipe, that is galvanized pipe.

There are two division of galvanized pipes: hot-dipped and electro-galvanized. The zinc oxide covering of hot-dipped galvanized is thicker than electrical. But the latter is less cost.

Blowing Oxygen: The pipe is used for blowing Oxygen in steelmaking. generally are small size pipe. And sizes are almost eight types from 3/8 inches to 2 inches. Content are almost 08,10,15,20 or Q195 AT-of Q235. For deterioration level of resistance, some pipe are aluminized.

Electric wire conduit: Usually it is common welded as well as carbon steel pipe and used in tangible and a variety of structure and submission projects. The affordable size are from 13mm to 76mm. The walls width is slim and mostly coated or galvanized. And cold bending test has been requested.

Roller tube: The roller pipe is used for buckle machine, usually the material are Q215, Q235A, B-grade metal and 20# metal. Diameter are from 63.5mm to 219.0mm. It has certain requirements curvature, end perpendicular to the centerline and ellipticity. Always it should be conducted the general pressure and flattening test.

by: loveboa

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