High Speed PEX/PE-RT Pre-insulated Corrugated Jacket Pipe Production Line
Product Description
The flexible polymer pre-insulated pipe features a three-layer composite structure, consisting of an inner pressure-bearing PEX or PE-RT polymer pipe, a middle thermal insulation layer, and an outer high-density polyethylene (HDPE) protective shell.
This pipe is widely used in district heating and cooling networks, industrial process pipelines, as well as pre-insulated piping systems for hot and cold water supply. Thanks to its excellent flexibility, it is suitable for both above-ground installation and direct underground burial, making it particularly ideal for urban infrastructure projects with limited space and high demands for long-term operational reliability.
In the production process, the inner PEX/PE-RT pressure pipe is manufactured and shaped independently in advance. The finished inner pipe then enters an integrated one-step production line, where polyurethane foam insulation and outer corrugated HDPE jacket extrusion are completed synchronously in a single process. This mature technology ensures firm adhesion between layers, stable thermal insulation performance, excellent structural integrity, and corrosion resistance. The final product can be supplied in long coiled lengths, effectively simplifying on-site construction and minimizing pipeline connection points.
The Flexible PEX PE-RT Pre-insulated Pipe Production Line is an advanced equipment for producing polymer pressure inner pipes (PERT, PEX) and insulating the inner pipes with polyurethane foam.
The characteristic of this production line is that the pouring process of polyurethane foam is continuous. The inner pipe is continuously conveyed into the pouring area together with the polyurethane foam mixture, then coated and formed with a film, and then passed through a round die head to be coated with the outer protective layer extruded by the extruder.
The pipe coated with the PE outer protective layer can be coiled or cut to a fixed length after passing through the water cooling zone.
The flexible pre-insulated pipes production line consists of the following components:
| 1 |
Production line for inner pressure pipe (PERT, PEX) |
| 2 |
Inner pipe unwinding device |
| 3 |
Pipe feeding device |
| 4 |
Conveyor |
| 5 |
Pipe centering device |
| 6 |
Preheating and temperature control |
| 7 |
Film feeding device |
| 8 |
High-precision foaming machine |
| 9 |
Corrugator / Corrugating machine with temperature control |
| 10 |
Extruder for casing pipe and water cooling |
| 11 |
Pull-off device |
| 12 |
Winding machine |
| 13 |
Control system |
Company Profile
Founded in 2003, Qingdao Huashida Machinery Co., Ltd. has over 20 years of professional manufacturing experience in PUR spray PE wrap insulated pipe production lines, polyurethane insulated pipe making machines, 3PE anti-corrosion pipe production lines, large-diameter underground pipeline equipment, and plastic pipe fitting production machinery.
We maintain long-term technical cooperation with Beijing University of Chemical Technology, Qingdao University of Technology, and other national research institutions. By integrating advanced global technologies and standards, Huashida Machinery has grown to become one of the top 3 manufacturers in China's pipeline equipment industry.
Our high-quality pipeline production machines are widely trusted by global customers and exported to Saudi Arabia, Kazakhstan, Uzbekistan, the UAE, Turkey, Russia, and more than 60 countries and regions worldwide.
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