Steel Pipe Inspection: Defective base pipes are sorted out to prevent them from entering the next production step, thereby reducing raw material waste.
External/Internal Sandblasting: Sandblasting removes dirt, oxide scale, welding slag, and other impurities from the inner wall of the steel pipe. It also smoothens the inner surface and reduces internal surface stress. This effectively enhances the service life of the steel pipe, reduces internal corrosion, and improves both the internal and external quality of the steel pipe.
Preheating Furnace: The steel pipe is heated to a certain temperature while removing moisture, preparing it for internal coating.
Internal Suction Coating: With the help of pressure, the coating material is dispersed into uniform and fine droplets and applied to the inner surface of the steel pipe, achieving a uniform coating layer.
External Spray Coating: Similarly, using pressure, the coating material is dispersed into uniform and fine droplets and applied to the outer surface of the steel pipe, achieving a uniform coating layer.
Pipe End Preparation: According to welding process requirements, a reserved length of 100 to 150mm is left at the pipe ends for end treatment and connection.
Electric Spark Testing: This checks for any leakage points in the anticorrosive layer, reducing the outflow of defective products and improving product quality.
Inkjet Printing: Inkjet coding is done as per national requirements.
Packaging: This makes product information visible and traceable.
