PU Foaming spary Preinsulation Pipe Continuous Production Line
Product Description
The polyurethane sprayed polyethylene thermal winding insulation
pipe production line independently developed by Huashida, consists of three parts: External shot blasting and derusting production line, polyurethane spraying
production line, and PE winding production line. The line has a number of national patents, and the third-party standardized
evaluation report has a technology advanced level of 5, reaching
the domestic leading level. And won the first set of technical
equipment in Shandong Province.The line adopts continuous spraying production process. High automatic, fast production efficiency, saving raw materials, increased
foaming and closed cell rate, lower water absorption rate, trinity
molding, and more reliable performance. Products with low carbon
environmental protection have higher economic and social benefits.
PU Foaming spary Preinsulation Pipe Continuous Production Line
Product Parameters
Producing technology flow of the polyurethane coating steel preinsulated pipe equipment:
1. Remove rust from steel pipe surface
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 ends
Photos showsteel pipe external wall blasting
PU foaming and curing
PE jacket wrapping 
Water quenching 
All line Composition of the polyurethane coating steel preinsulated pipe equipment:
| No. | name |
| 1 | External wall Shot blasting rust removel machine |
| 2 | Medium-frequency induction heating furnace |
| 3 | Polyurethane spraying unit |
| 4 | Single screw extruder and diehead mould |
| 5 | Finished pipe ends trimming machine |
| 6 | Conveyers, racks and robotics to move and handle the pipe |
| 7 | Electrical system and PLC |
Company Profile
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.
