HDPE Spacer Rings are essential components in pre-insulated piping systems, designed to ensure precise alignment and optimal insulation performance. Widely used in district heating and cooling networks, these rings play a critical role in maintaining the correct positioning of the steel service pipe within the outer HDPE casing.

Manufactured from high-quality High-Density Polyethylene (HDPE), these spacer rings offer excellent durability, chemical resistance, and long service life under demanding operating conditions. Also known as centralizers or insulation spacers, they are engineered to keep the inner steel pipe perfectly centered during production and operation of pre-insulated pipelines.

By maintaining uniform spacing, HDPE Spacer Rings allow for even distribution of polyurethane (PU) foam insulation, ensuring superior thermal efficiency and system reliability.

• Made from premium-grade HDPE material
• High mechanical strength and impact resistance
• Excellent corrosion and chemical resistance
• Lightweight and easy to install
• Designed for various pipe diameters and specifications
• Long-lasting performance in harsh environments

• Center the service pipe inside the HDPE outer jacket
• Ensure uniform PU foam insulation thickness
• Prevent direct contact between inner pipe and casing
• Enhance overall insulation efficiency and system lifespan

• District heating and cooling systems
• Oil & gas insulated pipelines
• Industrial thermal insulation networks
• Underground pipeline systems

Qingdao Huashida Machinery Co., LTD is a manufacturer of plastic pipe machines, municipal pipe machines, pipe insulation & anticorrosion machines, and pipe jointing & anticorrosion materials, with more than 20 years of production experience.

• HDPE jacket pipe for pre-insulated pipe Production Line (110-2000mm)
• Rigid pre-insulated pipe Production Line
• Flexible pre-insulated pipe (PERT) production line
• Steel pipe FBE/2LPE/3LPE anti-corrosion coating line
• Steel pipe derusting line
• PE pressure pipe/Water Gas supply pipe production line
• PP/PE plastic board/sheet/geomembrane production line
• NBR PVC Thermal insulation tube/plate production line
• Pipeline anti-corrosion materials and instruments

We prioritize research and development, collaborating with Tsinghua University, Beijing University of Chemical Technology, South China University of Technology and other scientific research institutions. By absorbing advanced technology from home and abroad, we rank among the top 3 manufacturers in the industry in China.

We have served more than 400 overseas customers and export our products to Kazakhstan, Uzbekistan, Middle East, Russia, Nigeria and other countries.