High-Output Energy-Efficient HDPE Jacket Pipe Extrusion Line for Smooth Internal and External Walls
Underground Steel Pipe PU Pre-Insulation HDPE Jacket Pipe Extrusion Equipment
The HDPE Jacket Pipe Extrusion Line is a high-output, energy-efficient production system designed for manufacturing thin-wall HDPE outer casing pipes used for PU foam pre-insulated pipelines that comply with international standards.
The finished jacket pipe consists of a steel pipe, a PU polyurethane insulation layer, and a durable protective HDPE outer shell. Pipe Diameter Range: 110-2200mm
Main Advantages:
Utilizes a vacuum calibrating technique.
Ensures smooth internal and external walls.
Offers a long service life with excellent anti-corrosion properties.
High-efficiency extruder gives larger output, stable performance.
Typical Output Capacity:
SJ-75/33: 250-350 kg/h
SJ-120/33: 700-900 kg/h
SJ-150/33: 800-1200 kg/h
Pipe Usage:
HDPE jacket pipe is out case of thermal insulating pipe, which is widely used in central heating, oil, nature gas and other industrial area.
1set Vacuum loader
1set Hopper dryer
1set High-efficiency single screw extruder
1set 25/25 single screw extruder for mark line
1set Vacuum calibration table
1set Water spraying tank
1set Hauling machine
1set Cutting machine
1set Stacker
High-efficiency single screw extruder
The screw is with barrier & mixing head; the barrel is a new model with slotting (channel). Both guarantee the good jellification, large output and stable performance of the extruder.
Die-Head
Die-head is mainly composed of mandril, neck mold, spiral body, cover, die-head body, bolts, and heating rings.
Vacuum Calibration Tank
The vacuum calibration tank is mainly composed of a frame, stainless steel tank, vacuum system, spray cooling system, position adjustment device. Spray nozzles spray cooling water from all directions on pipe surface to cool down the pipe promptly.
Haul-off Machine
The haul-off machine is mainly composed of a driving device, track, clamping structure, adjusting system, side plate and foundation bed. Haul-off caterpillars are driven by AC motor with frequency conversion control to adapt to different extrusion speeds.
Chipless cutting
It adopts the blade punching principle to realize no-dust cutting.
Control system
ABB frequency converter or EUROTHERM speed controller
Japan RKC temperature controller
SIEMENS AC contactors
A controlling system can be designed according to customers' requirements. 
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