Product Description
This high-efficiency, energy-saving HDPE outer casing extrusion production line is specifically designed for manufacturing high-density polyethylene protective shells for polyurethane foam insulated pre-fabricated pipes according to international standards.
The line utilizes a vacuum sizing process, resulting in pipes with smooth inner and outer walls, excellent corrosion resistance, superior insulation properties, and outstanding mechanical performance, ensuring a long service life.
The polyurethane sprayed polyethylene thermal winding preinsulation pipe production line independently developed by Huashida, consists of three parts: External shot blasting and derusting collector production line, polyurethane spraying production line, The line has a number of national patents, and the third-party standardized evaluation report has a technology advanced level of 5, reaching the domestic leading level. And won the first set of technical equipment in Shandong Province.
The line adopts continuous spraying production process. High automatic, fast production efficiency, saving raw materials, increased foaming and closed cell rate, lower water absorption rate, trinity molding, and more reliable performance. Products with low carbon environmental protection have higher economic and social benefits. Product Parameters
| Style | PE-110/500 | PE-655/1380 | PE-960/1860 | PE-1155/2200 |
| Main Extruder | SJ-75/33 | SJ-120/33 | SJ-150/33 | SJ-150/33 |
| Pipe diameter | Φ110-600mm | Φ655-1380mm | Φ960-1860mm | Φ1155-2200mm |
| Capacity | 250-350kg/h | 700-900kg/h | 1000-1200kg/h | 1350kg/h |
| Installed power | 160kw | 480kw | 580kw | 650kw |
| Length | 26m | 36m | 45m | 45m |
Production line composition:
-1set Vacuum loader
-1set Hopper dryer
-1set High-efficiency single screw extruder
-1set Vacuum calibration table
-1set Water spraying tank
-1set Hauling machine
-1set Cutting machine
-1set Discharging Frame
Main line Composition of the polyurethane coating steel preinsulated pipe equipment:
| No. | Name |
| 1 | External wall Shot blasting rust removel machine |
| 2 | Medium-frequency induction heating furnace |
| 3 | Polyurethane spray foaming unit |
| 4 | pipe rotator trolley |
| 5 | Single screw extruder and diehead mould |
| 6 | Finished pipe ends trimming machine |
| 7 | pipe Conveyers and racks |
| 8 | Electrical system and PLC |
Main Features
Features of the HDPE outer protective pipe production line:
- Compact structure, small footprint
- High degree of automation, can be operated by a single person, saving labor costs
- Long design life and reliable operation
- High-efficiency extruder, high output and stable performance
- Uniform pipe wall thickness, smooth inner and outer surfaces
- High raw material utilization rate, no waste
- One-step molding, no trimming required
PU Foaming spray Pre Insulated Pipe Continuous Production Line
Producing technology flow of the polyurethane coating steel preinsulated pipe equipment:
1. Remove rust from steel pipe surface
2. preheat the steel pipe to get it ready for polyurethane spraying
3. Spray polyurethane evenly on steel pipe outer surface
4. Wrap melted HDPE strap around the PU foam
5. Trim the pipe ends
Steel pipe rust removal equipment
Polyurethane foam for jacket pipes
After Sales Service
-Supply full completed production solution: design, installation, commissioning,training
-Share you 389 sets of production experience from all the world
-Having 9 professional senior engineers
-Having a high-end plastic machinery equipment expert workstation in China
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 23 years of production experience.
Huashida machines have been well received in Saudi Arabia, Kazakhstan, Uzbekistan, United Arab Emirates, Turkey, Russia, etc.
Shandong Province's first set of insulation pipe production line (awarded honor)
Our main products are:
1. HDPE jacket pipe for pre-insulated pipe Production Line (110-2200mm)
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. Exhibition
Abu Dhabi Oil and Gas Exhibition 2025
Thank you very much for you looking into Huashida equipment. For more details, please come back to us. We will respond immediatedly and work out a customized plan for you according to your requirements and demands. 
