High Speed Pex/PE-RT Pre-Insulated Corrugated Jacket Pipe Production Line

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:

Certifications

Our continuous PERT/PPR/PP/HDPE polyurethane foam flexible insulation pipe line has passed ISO9001:2008 certification by SGS, ensuring product quality meets international standards and facilitating global market access.

International Exhibition

We actively participate in international trading shows to showcase our advanced insulation pipe production line, enhancing brand influence and establishing cooperative relations with global customers.

Company Profile

Qingdao Huashida Machinery Co., Ltd is a professional plastic extrusion production line manufacturer established in 2003. The factory covers 34000 square meters, focusing on the R&D and production of various plastic pipe equipment.

Our main products include HDPE pressure pipe for gas or water transmission, structural wall pipe extrusion line, corrugated pipe extrusion line, and continuous PERT/PPR/PP/HDPE polyurethane foam flexible insulation pipe line. The products have been exported to the Middle East, Russia, Africa, Turkey, Korea and other regions, winning wide recognition from global customers.

Our factory is located in Chengyang Industrial Area, Qingdao, Shandong Province. We have been approved and obtained ISO9001:2008 certification by SGS. All customers are welcome to visit our factory for inspection and cooperation.