3LPE Coating Pipe Production Line for Steel Pipes with 50-4200mm Diameter Range, Sa≥2.5 Cleaning Level, and FBE, 2LPE, 3LPE Coating Structure

Coating Line Description
This production line is a three-layer polyethylene (3LPE) anti-corrosion coating production line for steel pipes, integrating rust removal, epoxy powder spraying, AD adhesive application, polyethylene coating and other processes.

The external 3PE anti-corrosion and internal epoxy coating spraying of steel pipes is an efficient anti-corrosion method for steel pipes.

This anti-corrosion method is widely applied in fields such as oil and gas transportation pipelines, water supply and drainage pipelines, etc., which can significantly extend the service life of steel pipes.The lines can be applied to FBE, 2 layer FBE, 2 layer PE, 2 layer PP and 3 layer PE anti-corrosion coating.

Product Parameters

According to customer demand for the production of different specifications products.

The internal epoxy coating spray has strong anti-corrosion adhesion and good chemical corrosion resistance, which can effectively prevent the corrosion of the conveyed medium (such as oil, gas, water, etc.) inside the steel pipe.

 
The composition of 3-layer PE coating production line
The three -layer PE anticorrosion structure includes fusion bonded epoxy-powder bottom layer, polymer adhesive middle layer and polyethylene top layer. The so-called 3-layer PE Coating Production line,3-layer refers to the 3-layer structure of epoxy primer, that is a thermosetting, non-toxic coating, curing after form high molecular weight cross-linked structure coating, With excellent chemical corrosion resistance and high mechanical properties, especially the best wear resistance and adhesion. It can form a continuous coating and steel pipe surface directly bonded, with good resistance to chemical corrosion and anti-cathode stripping performance. 
To ensure that the overall coating at a higher temperature Has a good adhesion, making the middle layer of adhesive reactive groups to form a chemical bond. That is high quality of steel pipe anti-corrosion coating buried in the ground.


The intermediate layer is usually a copolymer binder, the main component of which is polyolefin, and is widely used as a vinyl copolymer adhesive. The polar moiety of the copolymer adhesive and the epoxy group of the epoxy primer can react to form hydrogen bonds or chemical bonds to form a good bond between the intermediate layer and the substrate; and the non-polar ethylene moiety has a Good affinity, so the middle layer and the surface layer also has a good bonding performance. Three-layer structure of polyethylene anti-corrosion, as the buried pipe outside the protective layer is very superior, and the technology has been widely used in the West-East Gas and oil field oil supply, urban gas supply, water pipeline used on the anti-corrosion.

Technological process of 3LPE coating:

Upload pipes→pipes screw conveyor→rust removal of intermediate frequency heating→Epoxy powder coating→outer layer soli quid & polyethylene coating→cooling spray→pipes screw conveyor→grinding pipes, s end→unload pipes
 

-Adopt advanced technology
-Stable operation
-High degree of automation, saving labor costs
-Good anti-corrosion quality, meets international standard
-Provide process design - installation - commissioning - technical training full link services to ensure that customers quickly put into production
-Share you 389 sets of production experience from all the world
-We have a top technical team of 9 professional senior engineers
-With domestic high-end plastic machinery and equipment expert workstation


Main Equipment List:

 
Equipment show:

Qingdao Huashida Machinery Co., LTD., founded in 2003, is a global developer, manufacturer and solution provider of plastic extrusion equipment. 70% of its customers come from overseas countries such as Europe, America, the Middle East and Southeast Asia.
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