Shot blasting machine: Shot blasting treatment removes dirt, oxide scale, welding slag, and other impurities from the inner wall of steel pipes. It also reduces internal surface stress on the inner surface of steel pipes. This can effectively extend the service life of steel pipes, reduce internal corrosion, and thus improve both the internal and external quality of steel pipes.
Medium-frequency heating equipment: It provides a certain temperature condition for the workpiece to enable the powder to adhere better to the inner surface of the steel pipe.
Powder suction device: Through a pair of internal powder coating mechanisms, powder is blown in from one side and suctioned in from the other, allowing the powder to adhere to the inner wall of the steel pipe during its flow, thus achieving internal wall corrosion protection.
Spray coating device: When air flows into the cavity from the nozzle, a vacuum is created inside the cavity (see the diagram below). The vacuum inside the cavity draws the powder through the powder suction tube into the cavity, creating an air-powder mixture. The forward velocity at the nozzle outlet sends the powder into the powder tube and spray gun. The air and powder mix together and are sent to the spray gun for spraying through the powder tube.
Curing oven: Utilizing the heat generated by the burner, a stable high-temperature atmosphere inside the oven is achieved through the flow of hot air from a blower, thereby heating the coating and the pipe body.
