Gas Supply Pipe Extrusion Line

Gas supply pipes have extremely high requirements for safety, pressure resistance, corrosion resistance and long service life, so the gas supply pipe extrusion line needs to meet strict process standards and quality control requirements.

Gas supply pipe extrusion lines usually use single-screw extruders or twin-screw extruders. For multi-layer co-extrusion (such as 3 layers), multiple extruders (usually 2 or 3) are required to form a co-extrusion system. According to the melting characteristics of PE materials (such as melt index MFI) and pipe specifications, special screws (such as barrier screws with mixing sections) are designed to ensure uniform plasticization, stable output and stable pressure.

The mold design is complex, requiring reasonable flow channel design, pressure balance, and precise temperature control to ensure uniform thickness of each layer, firm interface bonding, and no fusion line defects.

The high-temperature tube billet extruded from the mold in the vacuum calibration tank is accurately adsorbed on the inner wall of the sizing sleeve through vacuum adsorption to obtain accurate outer diameter size and roundness. Spray cooling water in the box. For large-diameter thick-walled pipes, internal pressure sizing or internal cooling systems are sometimes used to assist the rapid cooling and shaping of the inner wall of the pipe.

The haul-off machine provides stable and adjustable traction to pull the cooled and shaped pipe out of the mold at a uniform speed. The traction speed must be precisely synchronized with the extrusion speed to ensure uniform pipe wall thickness.

The gas supply pipe production line has a high degree of automation from raw material transportation to cutting and stacking, reducing manual intervention. Extrusion, sizing, traction and online detection ensure product dimensional accuracy and performance consistency. The gas supply pipe extrusion line is designed to be sturdy and durable, and the control system is reliable to ensure long-term continuous and stable production.