The coating methods of large-diameter water-conveying plastic-coated steel pipe plastic-coating equipment are divided into two categories: simultaneous internal coating and external coating, and separate internal coating and external coating.
Process coating methods are also divided into two categories: internal coating first, then external coating; first external coating, then internal coating.
There are five types of internal coating methods: well coating, non-static gun extension rod spraying, non-static powder pump push-pull rod spraying, powder coating, and vacuum suction coating.
There are four types of external coating methods: well coating, electrostatic spraying, fluidized bed dip coating, and waterfall coating.
There are two kinds of inner and outer coating at the same time: well coating (internal coating and external coating) and fluidized bed dip coating (external dip coating, internal non-static powder pump push-pull rod spraying).
Post time: Nov-28-2022