Several methods of steel pipe derusting

1, steel pipe sandblasting derusting method: sandblasting derusting by high-power motors shares move sand blasting high-speed rotating blades, steel grit, steel shot, wire section, minerals and other abrasive under the effect of centrifugal force on steel pipe surface sandblasting treatment, not only can thoroughly remove rust, oxides and dirt, and spiral steel pipe under the intense impact and friction abrasive effect, can reach the required uniform roughness.

2, steel pickling method: two methods usually use chemical and electrolytic pickling treatment, pipeline anticorrosion only use chemical pickling, can remove scale, rust, old coating, sometimes can be used as remarketing after sandblasting derusting. Chemical cleaning can make arrived in a certain degree of cleaning and surface roughness, but the anchor lines shallow, and constitute the pollution to the environment.

3, steel tube derusting method: first use steel wire brush, etc to burnish, spiral steel pipe surface can remove loose or cock scale, rust, slag, etc. Manual derusting can reach Sa2 level, dynamic derusting grade can reach Sa3, if healthy and vigorous adhered on the surface of the spiral steel pipe of iron oxide rust removing effect not ambition, can not meet the need of anticorrosion construction anchor pattern depth.

4,steel pipecleaning method: using solvent, emulsion cleaning spiral steel pipe surface, arriving at removing oil, grease, dust, lubricant, and similar organic matter, but it does not remove the rust on the surface of the spiral steel pipe, oxide coating, coating, etc., so only as adjuvant in anti-corrosion methods.