The production line adopts international advanced technology, combining modern automation with efficient production processes, which can significantly improve production efficiency and reduce production costs. Has good sealing performance, no chemical corrosion or oxidation in the inner tube.

Polyurethane PERT insulation pipe is called flexible insulation pipe in international, Chinese standard name is II type heat-resistant polyethylene (PE-RTII) low-temperature direct buried heating pipe.

The flexible pre-insulated pipes production line consists of the following components:

• Production line for inner pressure pipe (PERT, PEX)
• Inner pipe unwinding device
• Pipe feeding device
• Conveyor
• Pipe centering device
• Preheating and temperature control
• Film feeding device
• High-precision foaming machine
• Forming machine with temperature control
• Extruder for casing pipe and water cooling
• Pull-off device
• Winding machine

The system consists of three integrated layers:

• Inner service pipe (PE-Xa or PE-RT II material)
• Polyurethane foam insulation layer
• HDPE outer protective casing

One-step pert flexible insulation pipe production line process flow:

• Pipe unwinding - unwinding traction - V-shaped wheel conveying - track feeding - encapsulation and film coating - Pouring foaming - foam curing -PE layer O-shaped extrusion - Vacuum suction coating - spray cooling - winding

• High Heat Resistance: Can withstand continuous operating temperatures of up to 110°C.
• Clean and Safe: Smooth inner wall, free from impurities or contaminants.
• Smart Heating Applications: Enables automated and unattended operation for heating systems.
• Energy Efficiency: Ideal for low-temperature systems using 60°C supply water and 45°C return water, meeting modern energy-saving demands.
• Cost-Effective Construction: Reduces excavation work by 40%, significantly cutting civil construction costs.
• Material Saving:
  • Up to 15% less material use compared to PE-RT I
  • Up to 30% less material use compared to PP-R
  • Thinner wall thickness at the same pressure rating, without compromising strength

• District heating and cooling networks
• Residential and commercial building pipelines
• Industrial piping systems
• Transportation of hot and cold fluids

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 more than 20 years of production experience.

Our main products are:

• HDPE jacket pipe for pre-insulated pipe Production Line (110-2000mm)
• Rigid pre-insulated pipe Production Line
• Flexible pre-insulated pipe(PERT) and (PEX) production line
• Steel pipe FBE/2LPE/3LPE anti-corrosion coating line
• Steel pipe derusting line
• PE pressure pipe/Water Gas supply pipe production line
• PP/PE plastic board/sheet/geomembrane production line
• NBR PVC Thermal insulation tube/plate production line
• 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 are always attach great importance to research and development, collaborating closely with Tsinghua University, Beijing University of chemical technology, South China university of technology and scientific research institutions. by absorbing advanced technology home and abroad, we now rank one of the top 3 manufacturers in the industry in China.

We have been working with more than 400 overseas customers and exporting our products to Kazakhstan, Uzbekistan, Middle East, Russia, Nigeria and more countries.