Line for the production of dust-insulated pipes

Characteristics of the equipment of the line for the production of insulation pipes by polishing method:

1.  The whole line can produce direct pipes and pipes from high strength cast iron of various specifications.

2.  Automatic removal of rust from steel pipes

3.  Spray with two pistols, better density homogeneity, more stable thermal conductivity and less water absorption

4.  The thickness of the insulation layer and the outer layer can be changed according to the needs of different projects.

5.  The method of winding improves the mechanical properties of the outer protective tube.

6.  Due to polishing the texture of the polyurethane foam surface is higher and the connection to the outer polyethylene sheet is stronger.

7.  The polyethylene outer casing is thinner and more homogeneous, while ensuring its performance, which allows saving money.

8.  The process of forming the ring wrap of the polyethylene outer casing significantly improves its mechanical performance, such as elongation and tensile strength.

Production process:

The entire production line is a continuous assembly line consisting of:

Blast cleaning and rust removal from the outer wall of the steel pipe -- medium heat -- polyurethane foam -- high-density polyethylene wrap ---- cooling and molding -- end treatment -- sealed section of the pipe

Major equipment:

Blast cleaning line for external walls of steel pipes and rust removal

Use a blast machine to remove rust, oil stains, etc., from the surface of a steel pipe to guarantee the surface purity and adhesion strength between the polyurethane foam and the inner wall of the steel pipe.

Medium frequency heating device

Heating the steel pipe to the optimum foam temperature can guarantee a sufficient foam reaction and even foam density.

Polyurethane spray foam

Application with two pistols, good density uniformity, stable thermal conductivity, low water absorption

Extrusion winding line PC

The hdpe material is wrapped in a spiral on the surface of a polyurethane insulation layer with a certain pre-tension force and Angle, and the hdpe layer is rolled by a sealing traction device to guarantee complete melting of the layers without bubbles and gaps, creating a complete and solid protective shell.

Cooling and moulding device

The finished insulated pipe enters the cooling water cooler for cooling, so that the melted mould of the mpa can be quickly cooled and formed to ensure its stable geometric shape.

Treatment of pipe sections

Use special cutting equipment to neatly cut the reserved parts of the steel pipe at both ends, exposing the joints of steel tubes of standard length to facilitate subsequent construction and welding.

Technical parameters

Transport case