Continuous PU Spraying Foam PE Winding Preinsulated Steel Pipe Production Line

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 line adopts continuous spraying production process. It features a high degree of automation, fast production efficiency, raw material saving, increased foaming and closed-cell rate, reduced water absorption rate, and three-in-one molding, making its performance more reliable. Low-carbon and environmentally friendly products have high 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

Production steps:

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.  Water spray cooling
6.  Trim the pipe ends
 

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.

Equipment Show:

Technical parameters