Erw Stainless Steel Pipe 316 ERW (Electric Resistance Welded)

The nomenclature ERW Stainless Steel Pipe 316 refers to a specific type of welding process that involves both spot and seam welding. Seam welding is commonly used during the manufacturing of round, square and rectangular steel tubing. The steel strip is unwound from coils and side-trimmed to control width and condition the edges for welding. The strip then passes through a series of contoured rollers which cold-form the material into a circular (square or rectangular) shape. The edges are forced together under pressure as a butt joint and then welded by heating the material to temperatures above 2000° F. The flash weld that has formed is now removed from the outside diameter of the tube. Once the weld has been tested the tube then passes through a series of sizing rolls to attain its precise finished size, after which the tube is then straightened and cut to length.

The material used in the manufacturing process is typically SAE 1010. This product is typically available in Cold Rolled steel (CREW) for 0.060" wall and lighter and Hot Rolled steel  (HREW) for 0.083" wall and heavier. The product will come  in an "as-welded" condition, (often called – flash-in condition) referring to when the flash from the weld is left on the inside of the tubing, it is not normally removed or controlled during the ERW tube production process.

Material : 304/304L, 316/316L, 409
Specification :  ASTM A554
Finish :  DOM, 180 Grit

Erw Stainless Steel Pipe 316