Huashida Rigid polyurethane spraying polyethylene winding prefabricated directly buried insulation pipe consists of steel working pipe, spraying polyurethane rigid foam insulation layer and winding polyethylene outer protective pipe.



The production line employs a continuous spraying manufacturing process. It is characterized by a high level of automation, rapid production efficiency, conservation of raw materials, enhanced foaming and closed-cell ratios, a lowered water absorption rate, and three-in-one molding, which makes its performance more dependable. Low-carbon and eco-friendly products bring about significant economic and social benefits.

The production line is composed of three major parts:
√ Steel Pipe Shot Blasting Machine

√ Polyurethane Spraying Production Line

√ PE Outer Jacket Winding Production Line

Application:

Mainly used for the production of thermal insulation pipes for heating, cooling, petroleum, chemical and other fields.

Production steps:

1.External shot blasting for steel pipe rust removal
2.Steel pipe transferred to spraying conveyor line via pipe transport cart
3.Pipe preheating
4.Polyurethane foam spraying
5.Pipe transported to storage platform by lifting cart
6.PE jacket winding
7.Water cooling
8.Connection cutting
9.Finished pipe inspection
10.Pipe end repairing
11.Spray coding and packaging

Production line parameter:

1.Steel pipe range: 206mm-1820mm

2.Processing capacity:≤250m²/h

3. Cleaning class: Sa2.5

4.Used material: ISO (isocyanate), POLY (premixed polyether polyols), PE

5.Main equipment: Shot blasting and rust removal production line, Polyurethane spray production line, PE winding production line.

Shot blasting rust removal production line

Polyurethane spray production line

PE winding production line

1. Awarded the first (set) technical equipment in Shandong Province
2. Evaluation Report on Standardization of Scientific and Technological Achievements in Qingdao City
3.Having multiple national patents
4.Intelligence, automation, and reducing manual labor
5.Efficient and energy-saving, with low production costs
6.Stable and reliable, with a high yield of finished products and minimal waste