Construction technology of epoxy powder anticorrosive steel pipe

(1) Preheat the steel pipe to remove the surface debris and loosen the oxide layer;

(2) Sand blasting or shot blasting is carried out to make the steel pipe reach metallic white, the general anchor grain depth is controlled at 0μm, and then the surface dust is removed;

(3) The steel pipe with surface treatment is uniformly heated by a pollution-free heat source. Generally use the intermediate frequency coil heating steel pipe (that is, electric induction heating, steel pipe through the alternating magnetic field formed by the alternating large current coil eddy current heating), heating temperature can be adjusted according to the production speed, the thickness of the tube wall and the desired coating gelation, curing time, generally controlled at 1℃, to 230℃ is appropriate;

(4) The epoxy powder was first fully fluidized in the fluidized bed, and then the powder particles were negatively charged by electrostatic spraying and uniformly adhered to the surface of the preheated steel pipe. The epoxy powder adhering to the surface of the preheated steel pipe is heated and melts and flows, and further leveling covers the entire surface of the steel pipe, especially covering the depression on the surface of the steel pipe, as well as both sides of the welding passage. The molten coating flows into the filling so that the coating and the steel pipe are closely bonded to minimize the porosity, and the coating after leveling is further gelatinized and solidified.

Cangzhou shenlong pipe manufacturing co., ltd. Is engaged in oil, gas, water, coal slurry mixing medium steel pipeline coating operations, anti-corrosion, insulation, piping is set in a body's specialized pipeline engineering precast construction enterprises, products used in an oil pipeline, chemical piping, electrical, pipe, gas pipe, heat pipes, sewage pipes, etc. Anti-corrosion processing of straight pipe and bend pipe DN40-3000 three-layer structure polyolefin (PE, PP, TPEP,3LPE) steel pipe coated with anti-corrosion, DN40-3800 steel hot stewed bend pipe and pipe fittings coated with FBE, epoxy resin coating anti-corrosion, DN40-3800 steel pipe inner wall resistance reduction, solvent-free epoxy steel pipe, epoxy paint anti-corrosion, Coated plastic steel pipe, dip plastic steel pipe. They are lined with plastic steel pipe PE, PO, PP, PTFE, HDPE, and polymer polyethylene corrosion. The company is in strict accordance with China Petroleum and Natural Gas SY/T0413-2002, national GB/T23257-2009, German DIN 30670, American AWWA C210, and other international and domestic anti-corrosion standards.