Huashida's independently developed PUR Spray & PE Wrapping Insulated Steel Pipe Production Line (suitable for 508-1620mm steel pipes) integrates three core sections: an external pipe shot blasting and derusting line, a polyurethane spray foaming line, and a PE wrap winding production line.

This advanced production system is supported by multiple national utility patents, has obtained a third-party certified Level 5 technology rating, meets domestic leading industrial standards, and has been honored as Shandong Province First Set of Technical Equipment.

Equipped with a continuous PUR spraying process, this fully automated line delivers high production efficiency, reduced raw material consumption, and optimized energy savings. It ensures excellent polyurethane foaming quality, high closed-cell ratio, low water absorption, and a stable trinity molding structure. The eco-friendly, low-carbon insulated pipes produced feature stable performance and outstanding economic and social value.

1. Steel pipe surface shot blasting and de-rusting
2. Medium-frequency induction preheating
3. Uniform polyurethane spray foaming
4. HDPE strip wrapping over PU foam layer
5. Finished pipe end trimming

Founded in 2003, Qingdao Huashida Machinery Co., Ltd. has over 20 years of professional manufacturing experience in PUR spray PE wrap insulated pipe production lines, polyurethane insulated pipe making machines, 3PE anti-corrosion pipe production lines, large-diameter underground pipeline equipment, and plastic pipe fitting production machinery.

We maintain long-term technical cooperation with Beijing University of Chemical Technology, Qingdao University of Technology, and other national research institutions. By integrating advanced global technologies and standards, Huashida Machinery has grown to become one of the top 3 manufacturers in China's pipeline equipment industry.

Our high-quality pipeline production machines are widely trusted by global customers and exported to Saudi Arabia, Kazakhstan, Uzbekistan, the UAE, Turkey, Russia, and more than 60 countries and regions worldwide.