Vacuum Calibration HDPE Jacket Pipe Extrusion Line for District Heating Pre

The 110-2200mm Vacuum Calibration HDPE Jacket Pipe Extrusion Line is a high-precision, fully automated pipe extrusion production line purpose-built for manufacturing HDPE protective casing pipe used in PU foam pre-insulated pipeline systems.

At the core of the equipment is a precision vacuum calibration table that sizes each pipe to ± 0.1mm wall thickness tolerance while the HDPE is still molten - the defining technology that separates this line from standard extrusion equipment and ensures a tight, reliable bond with the polyurethane foam insulation layer.

Widely applied across district heating networks, chilled water distribution systems, and buried thermal insulation pipeline projects in Russia, Central Asia, the Middle East, and Africa, this vacuum-calibrated HDPE jacket pipe production line covers 7 standard models, meeting both high-temperature heating (up to 120°C) and low-temperature chilled water pipeline manufacturing requirements from a single flexible platform.

This full-automatic vacuum calibration HDPE jacket pipe extrusion line is the core supporting equipment for PU foam pre-insulated pipe production, delivering integrated, continuous, high-efficiency casing pipe manufacturing with fully customizable configuration:

• Vacuum Loader: Automatic PE particle feeding for stable, continuous material supply in high-output HDPE casing production.
• Hopper Dryer: Removes raw material moisture to stabilize PE melt quality and prevent defective pipe surface.
• High-Efficiency Single Screw Extruder: High-torque extrusion compatible with virgin and recycled PE, sustaining 250-1350kg/h stable output.
• Precision Vacuum Calibration Table: The system's core technology - professional vacuum sizing achieves ±0.1mm ultra-high dimensional accuracy for a perfect fit with the PU insulation layer.
• Water Spraying Cooling Tank: Multi-stage circulating cooling ensures stable pipe shaping and structural uniformity after vacuum calibration.
• Synchronized Hauling Machine: Stable traction speed matched to every diameter model for consistent pipe forming quality.
• Dust-Free Planetary Cutting Machine: Chipless, dust-free cutting preserves calibrated dimensions and keeps the workshop clean without secondary cleaning.
• Discharging Frame: Automatic pipe discharging and orderly stacking for convenient storage and transport.

One-time forming eliminates edge-trimming procedures, significantly reducing raw material waste, lowering production cost, and improving overall extrusion efficiency for mass pre-insulated jacket pipe manufacturing.

Founded in 2003, Qingdao Huashida Machinery Co., Ltd. is a high-tech manufacturer with 21 years of experience in vacuum calibration HDPE jacket pipe extrusion lines, pre-insulated pipe production systems, and pipeline anti-corrosion equipment. The company holds multiple national patents and ISO 9001 / ISO 14001 / ISO 45001 / CE international certifications.

Focused on R&D and production of thermal insulation pipeline machinery and plastic extrusion equipment, Huashida has exported more than 500 sets of equipment to over 60 countries and regions, providing full-cycle customized solutions and 24-hour online after-sales technical support to district heating projects, chilled water pipeline manufacturers, and EPC engineering contractors worldwide.