Product Description
The HDPE jacket pipe extrusion line is designed for extruding a thin-wall outer protective shell used in Polyurethane (PU) foaming pre-insulated directly buried pipes.
This shell provides mechanical protection and waterproofing for the insulation layer.
Huashida Company, a leading manufacturer in China, adopts the vacuum calibration method for stable and precise production.
The line operates smoothly, features Siemens PLC intelligent control, and ensures high-speed, energy-efficient, and environmentally friendly performance - helping customers save production costs.
Structure of Pre-Insulated Pipe:
Carrier Pipe: Steel / Stainless Steel / Plastic / Copper
Insulation Layer: Polyurethane Rigid Foam (PU)
Outer Jacket: High-Density Polyethylene (HDPE) Protective Shell![HDPE Jacket Pipe Extrusion Line for PU Foaming Pre-Insulated Pipes with Mechanical Protection and Waterproofing 0]()
Detailed Photos
Screw System: Solid-Liquid Separation & High-Efficiency Plasticization
Adopts next-generation solid-liquid separation screw technology (industry-leading in China);
Multi-zone structure: feeding, separation, plasticizing, homogenizing, and mixing sections;
Long L/D ratio for excellent plasticization;
Extended feeding system ensures fast and stable material compression;
Thermal isolation design prevents heat transfer to the feeding section;
High-speed gearbox and powerful motor for enhanced extrusion efficiency;
Production efficiency improved by approx. 30%, and heating energy consumption reduced by 20%.![HDPE Jacket Pipe Extrusion Line for PU Foaming Pre-Insulated Pipes with Mechanical Protection and Waterproofing 1]()
Die Head System: Precision Molding & Stress-Relief Design
Made from high-strength alloy steel, resistant to deformation under high temperature and pressure;
Multi-layer spiral flow channels with polished and chrome-plated surfaces for smooth flow;
Counter-rotation design helps release extrusion stress and reduce pipe bursting risk;
Optimized expansion and contraction angles ensure good melt flow and axial strength;
Extended straight section increases radial and axial rigidity;
Supports LDPE, HDPE, and mixed PE materials, lowering production cost.![HDPE Jacket Pipe Extrusion Line for PU Foaming Pre-Insulated Pipes with Mechanical Protection and Waterproofing 2]()
Control System: Centralized Control & Intelligent Operation
Equipped with a Siemens PLC centralized control system
Custom-designed software integrates system and HMI interaction
One-button control for speed, wall thickness, and production capacity
Supports remote monitoring and fault diagnosis
Easy operation, safe and labor-saving
Planetary Cutter: Hough Block Positioning & Precision Cutting
Features Hough block clamping structure to prevent pipe deformation during cutting;
Ensures vertical and smooth cut surfaces without secondary processing;
Equipped with dust collection system for a clean working environment.
High strength and toughness, smooth surface finish
Uniform wall thickness with excellent pressure resistance
Outstanding resistance to stress cracking and low-temperature impact
Features
Based on German extrusion technology with independent innovation
High automation, stable performance, and energy-saving operation
Compatible with various polyethylene raw materials
Safe operation, easy maintenance, and long service life
Applications
District heating pipeline systems
Oil and chemical insulation pipelines
Municipal water supply and drainage projects
Liquid and gas transmission systems
![HDPE Jacket Pipe Extrusion Line for PU Foaming Pre-Insulated Pipes with Mechanical Protection and Waterproofing 4]()
Company Profile
Qingdao Huashida Machinery Co., LTD, is a manufacturer of series of plastic pipe machines, municipal pipe machines, pipe insulation&anticorrosion machines, and pipe jointing&anticorrosion materials, with 21 years of production experience.
Our main products are:
1. HDPE jacket pipe for pre-insulated pipe Production Line (110-2000mm)
2. Rigid pre-insulated pipe Production Line
3. Flexible pre-insulated pipe(PERT) production line
4. Steel pipe FBE/2LPE/3LPE anti-corrosion coating line
5. Steel pipe derusting line
6. PE pressure pipe/Water Gas supply pipe production line
6. PP/PE plastic board/sheet/geomembrane production line
7. NBR PVC Thermal insulation tube/plate production line
8.Pipeline anti-corrosion materials and instruments: heat shrink joint coating sleeve, electro-fusion weldable joint sleeve, portable welding gun(extruder), PE PP welding rod.
We have been working with more than 400 overseas customers and exporting our products to Kazakhstan, Uzbekistan, Iran, Turkey, Russia, Nigeria and other countries.
Our team
![HDPE Jacket Pipe Extrusion Line for PU Foaming Pre-Insulated Pipes with Mechanical Protection and Waterproofing 6]()
Delivery
Exhibition
![HDPE Jacket Pipe Extrusion Line for PU Foaming Pre-Insulated Pipes with Mechanical Protection and Waterproofing 8]()
Certifications
![HDPE Jacket Pipe Extrusion Line for PU Foaming Pre-Insulated Pipes with Mechanical Protection and Waterproofing 9]()
![HDPE Jacket Pipe Extrusion Line for PU Foaming Pre-Insulated Pipes with Mechanical Protection and Waterproofing 10]()
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