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The production process of plastic-coated steel pipe
2023-01-03 09:31
Generally, there are many different production processes for the production process of plastic-coated steel pipes, but we know very little about the situation behind these production processes. Today we will learn about the production process of plastic-coated steel pipes together.
(1) Internal and external spraying process: Using electrostatic adsorption theory, through pre-treatment of steel pipes, spray polyethylene or epoxy resin powder with a spray gun. Also known as the second-generation anti-corrosion plastic-coated steel pipe, epoxy composite steel pipe inside and outside.
(2) Curtain coating process: also known as the curtain method, it is coated on the outer wall of the heated steel pipe using curtain coating through a sieve filled with powder.
(3) Melting and winding process: using the hot melting and winding method, hot melt adhesive and polyethylene are wound on the heated steel pipe in the form of an extruder, and react to form a three-layer structure. The full name is fusion bonded epoxy/extrusion Plastic polyethylene structural protective layer.
(4) Hot dipping adopts fluidized bed dipping, a one-time film-forming method. Also known as the first generation of anti-corrosion plastic-coated steel pipes, polyethylene inside and outside.
(5) Plastic-coated composite steel pipes are divided into a hot-dipping process, internal and external spraying process, rotational molding process, shower coating process, suction coating process, fusion winding process, etc.
Generally, there are many different production processes for the production process of plastic-coated steel pipes, but we know very little about the situation behind these production processes. Today we will learn about the production process of plastic-coated steel pipes together.
(1) Internal and external spraying process: Using electrostatic adsorption theory, through pre-treatment of steel pipes, spray polyethylene or epoxy resin powder with a spray gun. Also known as the second-generation anti-corrosion plastic-coated steel pipe, epoxy composite steel pipe inside and outside.
(2) Curtain coating process: also known as the curtain method, it is coated on the outer wall of the heated steel pipe using curtain coating through a sieve filled with powder.
(3) Melting and winding process: using the hot melting and winding method, hot melt adhesive and polyethylene are wound on the heated steel pipe in the form of an extruder, and react to form a three-layer structure. The full name is fusion bonded epoxy/extrusion Plastic polyethylene structural protective layer.
(4) Hot dipping adopts fluidized bed dipping, a one-time film-forming method. Also known as the first generation of anti-corrosion plastic-coated steel pipes, polyethylene inside and outside.
(5) Plastic-coated composite steel pipes are divided into a hot-dipping process, internal and external spraying process, rotational molding process, shower coating process, suction coating process, fusion winding process, etc.
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