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Polyurethane Spraying Foam Preinsulated Steel Pipe Making Machine
This advanced machine integrates three core components:
Steel Pipe Shot Blasting Machine
Polyurethane Spray Production Line
Polyethylene (PE) Winding Production Line
The production process employs continuous or intermittent spraying, ensuring high closed-cell foam rates, reduced water absorption, and reliable trinity molding. It is designed for low-carbon, environmentally friendly operations with superior performance and cost efficiency.
The production of preinsulated steel pipes follows a streamlined, automated workflow:
Outer Wall Rust Removal: Steel pipes undergo shot blasting to achieve a Sa2.5 cleaning standard.
Pipe Transportation and Heating: Post-rust removal, pipes are lifted onto a pipeline rack, transported via a pipe cart to the spraying conveyor, and preheated.
Polyurethane Spraying: A uniform polyurethane foam layer is applied to the heated steel pipe.
PE Layer Winding: The pipe is wrapped with a polyethylene outer protective layer.
Cooling and Finishing: The pipe undergoes water spray cooling, connection incision, and offline processing.
Inspection and Packaging: Finished pipes are inspected, ports repaired, coded, and packaged for delivery.
Eco-Friendly Dust Removal:
Intelligent shot blasting with sequential activation and self-locking.
Energy-saving frequency conversion motor and adjustable sand volume based on pipe diameter.
Three-level dust removal system ensures compliance with environmental standards.
Large-Diameter Pipe Production:
High load-bearing spiral conveyor supports continuous polyurethane spraying and PE winding.
Ideal for large-diameter insulation pipes, offering efficiency, stability, and reduced equipment investment.
Fully Automated Operation:
Equipped with sensors for pipe loading, acceleration tracking, detachment, and descent.
Ensures seamless, automated production with minimal manual intervention.
Material-Saving Spraying:
Fast online spraying with consistent surface thickness.
Continuous spraying minimizes raw material waste and ensures uniform insulation.
Efficient Extrusion and Winding:
Energy-saving extruders and mechanical clamping for precise PE winding.
Automated cutting and pipe removal accelerate production.
Precision Interface Processing:
Centralized, automated machining of pipe interfaces ensures accurate size, angle, and edge dimensions.
|
Steel Pipe Diameter (mm) |
Insulation Thickness (mm) |
Outer Protective Tube Diameter (mm) |
Minimum Wall Thickness of Outer Layer (mm) |
|---|---|---|---|
|
500 |
30-60 |
580-640 |
5.6 |
|
630 |
30-60 |
710-772 |
6.6 |
|
710 |
30-60 |
790-850 |
7.2 |
|
800 |
30-60 |
885-950 |
7.9 |
|
900 |
30-60 |
980-1054 |
8.7 |
|
1000 |
30-60 |
1090-1155 |
9.4 |
|
1100 |
30-60 |
1190-1250 |
10.2 |
|
1200 |
40-100 |
1316-1436 |
11 |
|
1400 |
50-100 |
1538-1638 |
12.5 |
|
1500 |
50-100 |
1638-1738 |
12.5 |
Steel Pipe Range: 206mm - 1820mm
Processing Capacity: ≤250м²/h
Cleaning Class: Sa2.5
Materials Used: ISO (isocyanate), POLY (premixed polyether polyols), PE
Main Equipment: Shot blasting and rust removal line, polyurethane spray line, PE winding line
Award-Winning Innovation: Recognized as the first set of technical equipment in Shandong Province.
Certified Excellence: Backed by Qingdao City's Scientific and Technological Achievements Standardization Evaluation Report.
Patented Technology: Multiple national patents ensure cutting-edge performance.
Intelligent Automation: Reduces manual labor and enhances operational efficiency.
Cost-Effective Production: Energy-efficient processes lower production costs.
High Yield and Reliability: Stable operations with minimal waste and high-quality output.
Enhanced Product Performance:
Improved mechanical properties and reduced wall thickness of the outer protective tube.
Lower water absorption and higher closed-cell rate in the insulation layer.
Reduced eccentricity, uniform density, and enhanced compressive strength.
Minimized thermal conductivity for optimal energy conservation.
Q1: What is the Polyurethane Spraying and Polyethylene Winding Pre-insulated Steel Pipe Production Line?
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,
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