HDPE pre-insulated pipe extruder machine by absorbing the tube extrusion developed technology from German and improved by Qingdao Huashida Machinery Co., Ltd. The line is an integration design composed by extruder, vacuum calibrating, cooling, pulling, cutting, stacker. Great performance in automatic operation, extrusion capacity, steady and service life etc. Especially compared with the line use internal pressure method, vacuum calibrating method is much better than it for stiffness, pressure resistance and surface smooth.

Vacuum calibrating method pre-insulated pipe outside casing extrusion line is the most advanced and popular machinery in the world. In the practice of domestic construction becomes increasingly used energy-saving technology trenchless laying of pipelines, using pipes and fittings with industrial thermal insulation of rigid polyurethane foam (PUF insulation) in protective shell.

Piping PUF insulation and fittings is a rigid structure "pipe in pipe" consisting of steel or galvanized steel carrier pipe, a layer of polyurethane foam insulation and the outer jacket pipe protective of high-density polyethylene - for underground installation or sheet galvanized steel - for above-ground pad.

Rigidity due to the presence of strong ties between the steel pipe layer polyurethane insulation and jacket pipe and provides pre-shot blast or blast cleaning the surface of the steel pipe, optimum performance polyurethane insulation, corona surface of polyethylene pipe shell.

• Significantly increases the reliability of the pipeline in the PUF insulation system operational availability of remote condition monitoring PUF insulation, which allows to detect and repair leaking coolant, preventing accidents typical for thermal networks of other designs.

Qingdao Huashida Machinery Co., Ltd, is a manufacturer specializing in plastic pipe machines, municipal pipe machines, pipe insulation & anticorrosion machines, pipe jointing&anticorrosion materials, and so forth with 21 years of production experience.

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 Production Line
5. Steel Pipe Derusting & Shot Blasting Production Line
6. PE Pressure Pipe/Water Gas Supply Pipe Production Line
7. PP/PE Plastic Board/Sheet/Geomembrane Production Line
8. NBR PVC Thermal Insulation Tube/Plate Production Line
9. 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 have been working with more than 400 overseas customers and exporting our products to Kazakhstan, Uzbekistan, Iran, Turkey, Russia, Nigeria and other countries.