The quality of oil pipe thread quality directly affects the renewal process

　　The quality of oil pipe thread quality directly affects the renewal process:

　　Such as steel derusting, descaling, stainless steel, aluminum, copper alloy in addition to the film, even some metal surface of paint removal descaling. Because of the rust layer and oxide films on the surface of the oil if not clean will hinder the rust removal, in addition to the oxide film of liquid contact, affect descaling liquid of rust layer of penetration and the rust layer of destruction, dissolution leads degreasing, rust removing, film is not completely serious consequences. At the same time, in addition to pollution in solution & membrane, cause two pollution, or reduce the capacity and role of rust removing solution.