Automated 3LPE Coating Pipe Production Line with Uniform Coating Quality and Long-Term Corrosion Resistance

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 key equipment includes steel pipe external rust removal equipment, steel pipe transmission equipment, medium-frequency heating equipment, epoxy powder spraying equipment, AD adhesive extrusion equipment, PE polyethylene extrusion equipment, cooling equipment, PE beveling equipment, and marking equipment. It features a high degree of automation, uniform coating quality, long-term corrosion resistance, and is widely used in anti-corrosion projects of long-distance oil and gas pipelines as well as urban gas and water supply pipelines and other fluid transportation pipelines.

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

The lines can be applied to FBE, 2 layer FBE, 2 layer PE, 2 layer PP and 3 layer PE anti-corrosion coating.
3 layer PE anti-corrosion coating consists of first FBE coating, middle adhesive layer and outer polyethylene layer.
The steel pipe anti-corrosion coating line is employed for applying anti-corrosion coatings to steel pipes in the factory with different diameters, which is more extensively utilized in various types of engineering projects, particularly in heating, gas, and oil sectors.
 

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 processes

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

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.
Welcome to our factory to discuss cooperation!
 

Our Main Products Include:
HDPE Jacket Pipe Extrusion Line
https://hsdextruder.en.made-in-china.com/product/nUGpodSAarVq/China-HDPE-Insulation-Pipe-Extrusion-Machine-for-Supplying-Hot-Water-Oil-Pipeline.html

3LPE Steel Pipe Anti-Corrosion Coating Line
https://hsdextruder.en.made-in-china.com/product/EAnUkIvojTYJ/China-3lpe-3PE-Fbe-Anti-Corrosion-Insulation-Coating-Line-for-Trunk-Petroleum-Transport-Pipelines.html

Hollow Wall Spiral Pipe Production Line
https://hsdextruder.en.made-in-china.com/product/stZrvGPyCnYX/China-Durable-HDPE-Hollow-Wall-Corrugated-Pipe-Machine-Production-Line.html

Double Wall Corrugated Pipe Production Line 
https://hsdextruder.en.made-in-china.com/product/uaCYpfkvstre/China-High-Density-Polyethylene-Double-Wall-Corrugated-Pipe-Production-Line-for-Drainage-Water.html

PE/PP Geo Membrane Production Line
https://hsdextruder.en.made-in-china.com/product/SfypzaVGOnYF/China-HDPE-Plastic-Geo-Membrane-Film-Extrusion-Line.html

PE/PP Sheet Board Extrusion Line
https://hsdextruder.en.made-in-china.com/product/ITrUKBnEBtRa/China-PE-PP-Pet-Multi-Layer-Sheets-Boards-Co-Extrusion-Line.html

Rubber Foam Insulation Pipe Production Line
https://hsdextruder.en.made-in-china.com/product/WafrnuQwRERF/China-PVC-NBR-Nitrile-Rubber-Foam-Insulation-Sheet-Tube-Production-Line-with-Thickness-9mm-13mm-19mm.html


HDPE Welding Wire Welder Rods

https://hsdextruder.en.made-in-china.com/product/OfIpGDJSmEUQ/China-HDPE-Welding-Wire-Plastic-Welding-Rod-Colored-Welder-Rods.html

Besides manufacturing machines, we also make Heat shrinkable sleeves and electro fusion sleeves and plastic welders, which are widely used as pipe joints and sealings of plastic drainage water pipes, PU foam insulation pipelines, 2PE/3PE oil and gas pipelines.