High-Pressure Air Type Turnkey Project Polyurethane Spray Foam Pre-Insulated Pipe Production Line for 508-1620mm Steel Pipe Manufacturing

The polyurethane (PUR) spray polyethylene (PE) wrapping pre-insulated pipe production line is engineered for manufacturing prefabricated direct-buried thermal insulation pipes. These pipes are widely used in heating, cooling, and crude oil transportation systems, delivering superior energy efficiency and long-term durability.

The rigid polyurethane spray PE-wrapped prefabricated pipe consists of three bonded layers:

1. Working Steel Pipe — Transports the medium (e.g., hot water, steam, or crude oil).
2. Sprayed Polyurethane Foam Insulation Layer — Provides excellent thermal insulation with uniform density and strong adhesion.
3. Wound Polyethylene (PE) Outer Casing — Ensures corrosion resistance and mechanical protection.

• Uniform & Controllable Polyurethane Density — Ensures consistent thermal performance.
• No Void Spaces — Eliminates heat loss and enhances structural integrity.
• High Shear Strength (>200 kPa) — Strong bonding between PU foam and PE casing.
• Adjustable Thickness — Customizable insulation and outer casing per design requirements.
• Fully Automated Production — Improves efficiency and reduces labor costs.

Qingdao Huashida Machinery Co., Ltd. was established in 2003. Since its inception, Huashida has focused on plastic polyurethane insulation pipe production lines, 3PE anti-corrosion pipe production lines, large-diameter underground pipe production lines, and plastic pipe joints for over 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 from home and abroad, after 20 years of endeavor we now rank among the top 3 manufacturers in the industry in China. Huashida machines have been well received in Saudi Arabia, Kazakhstan, Uzbekistan, the United Arab Emirates, Turkey, Russia, and other countries.