Electric Resistance Welded Pipe, ERW Steel Pipes, Electric Materials are carbon steel and carbonmanganese steel, ASTM A178 pipe and tube is to be used in boiler tubes, boiler flues, superheater flues and safe ends. Steel Grades A (lowcarbon steel), C (mediumcarbon steel), or D (carbonmanganese steel). Manufacturing processes must include heat treatment, welding after cooling.
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