... do beveled EndSurface treadmentBlack painting , Anti-rust varnish, Anti-rust oil , Hot-galvanized , Cold galvanized ,3PE, EPOXY coating, FBE, etcspray word ... pipeapplicationsOil, natural gas, chemical industry, power plants, food manufacturing, construction, manufacture ship, paper, medical drug use power, metallurgy,, oil drilling, boilers and pressure ...