How To Manufacture HDPE Pipes?

The specific steps of the polyethylene(PE) pipe production process are as follows:

1. Raw materials are mixed and dried

The function of mixing and drying is to stir, dry and mix polyethylene(PE) resin and color masterbatch to obtain uniform raw materials.

2. Plasticizing and extrusion

The raw material enters the extruder from the hopper. Under the action of conveying, compression, melting, and homogenization, the solid particles gradually change to a highly elastic state, and then gradually change from a highly elastic state to a viscous fluid (viscous fluid state), and continue Squeeze out.

3. Mold forming

At a suitable temperature, the material extruded from the extruder passes through the filter plate from a rotary motion to a linear motion and enters the mold. After spiral splitting, it is fused and compacted into a tubular in the forming section, and finally extruded from the die.

4. Cooling and shaping

The hot tube billet extruded from the die is shaped and cooled by the sizing sleeve vacuum sizing box under negative pressure, and then passes through the spray cooling box to gradually cool the inside of the pipe, thereby solidifying and setting the shape as a whole.

5. Laser coding and printing marks.

Advanced laser printers are used to print the marks on the pipes, including pipe standards, raw material grade, applications, brand, production time, production batch, and pipe diameter, wall thickness, pressure rate and other information. These information should be ensured that it will not be disappeared after being buried to realize the traceability of the product.

6. Cutting

Under the control of the meter wheel, the fixed-length cutting of the pipe is completed by the planetary cutting machine.

7. Stacking and packaging

The cut pipes are pushed to the turning table, packaged and transported after passing the inspection. If you need to store it, be sure to avoid sunlight.