This Continuous PU Foaming Insulation Pipe Jacket Extrusion Line is specially designed for the production of small and medium diameter pre-insulated PU thermal pipes, with jacket pipe diameters ranging from 48mm to 630mm. It integrates HDPE jacket pipe extrusion, epoxy coating, adhesive wrapping, and continuous PU foaming technology into a fully automated continuous production system, ensuring high efficiency, consistent quality, and reduced labor cost.

Widely used for:

District heating and cooling pipelines
Underground thermal insulation piping systems
Pre-insulated oil and chemical transport pipelines

1.Up load pipe-----2.External derusting------3.Put label on pipe side-----4.Intermediate heating------5.external epoxy coating----6.Water cooling-----7.Coating layer detection-----8. Put adhesive on epoxy layer-----9.PE jacket coating------10. PU foaming-----11.Foaming rectification-------12.Pipe edge cutting----13.Water cooling---14.Pipe edge heat shrink sealing------15.Download pipe

Applicable Pipe Diameter: 48mm – 630mm
Extrusion Material: HDPE pellets
Insulation Material: Polyurethane (PU) foaming agent
Coating Materials: Hot melt adhesive, Epoxy powder
Power Supply: 380V (-10% ~ +5%), 50Hz, 3-phase
Total Installed Power: Approx. 850 KW
Cooling Water Requirements:

Temperature: ≤15ºC
Pressure: 0.15–0.2 MPa
Flow Rate: 0.5 m³/min

Installation Site: Indoor
Ambient Temperature: 0–30ºC
Humidity: ≤85% (no condensation)
Safety: Non-hazardous operation environment

Continuous production for higher productivity
Strong insulation bonding, stable foam density
Online coating inspection and sealing ensures pipe durability
Suitable for customized PU insulated pipe manufacturing projects

Qingdao Huashida Machinery Co., Ltd was established in 2003. Since its inception, Huashida has focused on plastic polyurethane insulation pipe production line, 3PE anti-corrosion pipe production line, large diameter underground pipe production line and plastic pipe joints for 20 years. We always attach great importance to research and development,
collaborating closely with Beijing University of chemical technology, Qingdao university of technology and scientific research institutions. by absorbing advanced technology home and abroad, after 20 years of endeavor we now rank one of the top 3 manufacturers in the industry in China.  Huashida machines have been well received in Saudi Arabia, Kazakhstan, Uzbekistan, United Arab Emirates, Turkey, Russia, etc.