3LPE Coated Pipe Line Steel Pipe Out Wall Shot Blasting Machine Heat And Cold

External FBE Coating Equipment,Maneuverable PP Coating Equipment For Steel Pipe

INTRODUCTION

3PE anti-corrosion pipeline with three-layer PE anti-corrosion structure
First layer: epoxy powder (FBE>100um),
Second layer: Adhesive (AD) 170-250um,
Third layer: Polyethylene (PE) 2.5-3.7mm
The three materials are integrated and firmly bonded with the steel pipe to form an excellent anti-corrosion layer. The pipe diameter range is between 60 and 2820, and the wall thickness range is between 2.5-18mm. This is a good anti-corrosion method that can generally increase the service life by 50 years. It not only extends the replacement cycle of underground pipeline equipment, but also greatly saves costs, providing a strong role in national construction!

Main process flow:
Base pipe online → medium frequency induction preheating → outer wall shot blasting rust removal → inner wall blowing → pipe end cover avoidance → fine dust treatment → medium frequency induction heating → FBE electrostatic spraying → adhesive extrusion winding → polyethylene extrusion winding → coating water cooling → pipe end coating grinding → quality inspection/coding → finished product out of the pipe

Description:
3PE anti-corrosion steel pipe production process
Before performing anti-corrosion treatment on the 3PE anti-corrosion steel pipe base material, it is necessary to inspect and record the steel pipes entering the inlet platform, perform shot blasting and rust removal on the outer surface of the steel pipes, and then check whether the cleanliness and anchor depth of the outer surface of the steel pipes meet the requirements. If they do not meet the requirements, use a hand grinding wheel to polish and repair them to be qualified. Wrap the pipe end with adhesive tape, treat with fine dust, heat to the required temperature at medium frequency, spray epoxy powder, wrap the adhesive extruder side, wrap the PE extruder side, cool the anti-corrosion pipe with water, mark the qualified products with spray, and lower the pipe platform and stack them.

3PE anti-corrosion coating production line means the steel pipe is protected by three layer to prolong the life of use from 5-10years to 50-100years.
First layer is Fusion bonded epoxy layer (FBE> 100µm), the second layer of adhesive (AD) 170 ~ 250µm, the third layer of polyethylene (PE) 2.5 ~ 3.7mm. Present we can made the machinery for diameter range Φ159 ~ Φ1220.
3PE steel pipe outer coating has a high mechanical strength, excellent electrical insulation performance. The merits include high degree of mechanization, process parameters stable, not pollute the environment, etc. In recent years, the intensive of the pipeline corrosion engineering has been widely used.

The technological processes employed by Huashida Machinery for the 3LPE coating of steel pipes involve a series of meticulous steps designed to ensure the highest level of quality and durability. Here's a detailed overview of the process:

1. Upload Pipes:
   • The process begins with the loading of the steel pipes onto the production line. This step ensures that the pipes are positioned correctly and ready for processing.
2. Pipes Screw Conveyor:
   • Once loaded, the pipes are transported through the production line using a screw conveyor. This efficient system gently moves the pipes forward, allowing for continuous and uninterrupted processing.
3. Rust Removal via Intermediate Frequency Heating:
   • To ensure a smooth and even coating, it's crucial to remove any rust or impurities from the pipe surface. This is achieved through intermediate frequency heating, which raises the temperature of the pipe surface to effectively burn off rust and contaminants.
4. Epoxy Powder Coating:
   • Following rust removal, the pipes are coated with an epoxy powder primer. This layer acts as a corrosion-resistant barrier, providing a strong foundation for the subsequent coatings.
5. Outer Layer Solidification & Polyethylene Coating:
   • Next, the pipes undergo the application of the outer layer, which consists of a solidified coating and a polyethylene layer. The solidification process ensures that the coating adheres firmly to the pipe surface, while the polyethylene layer provides additional protection against corrosion and wear.