PUF spray PE winding preinsulated pipe production line consists of the following parts:
1) Steel pipe outwall shot blasting line
2) Polyurethane spray molding line
3) Polyethylene sheet extruding winding line
4) Water cooling line
5) End-cutting equipmentMain 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 spray foaming unit |
| 4 |
pipe rotator trolley |
| 5 |
Single screw extruder and diehead mould |
| 6 |
Finished pipe ends trimming machine |
| 7 |
pipe Conveyers and racks |
| 8 |
Electrical system and PLC |
Production line equipment Photos show
Rust Removal
First, the surface of the steel pipe is derusted, usually by shot blasting or sand blasting, to ensure that the surface is clean and free of rust, oil and other impurities. Preheating: The cleaned steel pipe is preheated so that the subsequent polyurethane foam can better adhere to the steel pipe surface.
Polyurethane spray molding line
The polyurethane raw materials (isocyanate and polyol) are mixed in a high-pressure foaming machine and evenly sprayed onto the surface of the preheated steel pipe. The polyurethane raw materials rapidly foam on the surface of the steel pipe, forming an insulating layer.
Polyethylene sheet extruding winding line
Polyethylene (PE) is wrapped around the polyurethane insulation layer to form an outer sheath. Cooling and shaping: The wrapped pipe is cooled and shaped to ensure that the outer sheath and insulation layer are tightly bonded to form a stable structure.
PE Jacket Water quenching
Wrapped finished pipe
Qingdao Huashida Machinery Co., Ltd was established in 2003. Since its inception, Huashida has focused on plastic polyurethane insulation pipe production line, 3LPE anticorrosion 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 22 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.
