High-Pressure Air Type Polyurethane Spray Foam Preinsulated Steel Pipe Making Machine with PU Thickness 30-100mm and PE Thickness 4-10mm

The polyurethane spray-applied, polyethylene winding pre-insulated pipe production line, independently developed by Qingdao Huashida Machinery Co., Ltd., integrates three core systems: an external shot blasting and derusting unit, a polyurethane spraying system, and a PE winding unit. This advanced production line has obtained multiple national patents and has been evaluated by third-party authorities with a technology advancement rating of Level 5, positioning it at the forefront of domestic innovation. It has also been recognized as a "First Set of Technical Equipment" in Shandong Province. The system utilizes a continuous spraying production process, ensuring a high degree of automation and superior production efficiency. It optimizes raw material usage while achieving enhanced foaming performance and a high closed-cell rate, resulting in reduced water absorption and improved insulation properties. With its integrated "three-in-one" molding process, the production line delivers highly reliable and consistent product quality. Furthermore, its low-carbon and environmentally friendly design contributes to both strong economic returns and significant social benefits.

Producing technology flow of the polyurethane coating steel preinsulated pipe equipment:
1. Remove rust from steel pipe surface by shot-blasting machinery. 
2. Preheat the steel pipe to get it ready for polyurethane spraying.
3. Spray polyurethane evenly on steel pipe outer surface.
4. Wrap melted HDPE strap around the PU foam.
5. Trim the pipe edges.
Main line Composition of the polyurethane coating steel preinsulated pipe equipment:

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:
1. HDPE jacket pipe for pre-insulated pipe Production Line (110-2000mm)
2. Rigid pre-insulated pipe Production Line
3. Flexible pre-insulated pipe(PERT) production line
4. Steel pipe FBE/2LPE/3LPE anti-corrosion coating line
5. Steel pipe derusting line
6. PE pressure pipe/Water Gas supply pipe production line
6. PP/PE plastic board/sheet/geomembrane production line
7. NBR PVC Thermal insulation tube/plate production line  
8.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. 

 

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