HDPE Double Wall Corrugated Pipe Extrusion Line for Municipal Underground Drainage Systems

The HDPE hollow wall corrugated pipes - also known as structured wall pipes - produced by this extrusion line feature a unique structural design that delivers high ring stiffness, excellent impact resistance, and lightweight performance.

These pipes offer outstanding creep resistance, superior external load-bearing capacity, and strong resistance to acids, alkalis, and salts, ensuring a service life of up to 50 years even in demanding environments.

Developed by Qingdao Huashida Machinery Co., Ltd., this winding pipe extrusion line integrates advanced domestic and international technologies, enabling the production of pipes with diameters ranging from 200 mm to 3000 mm.

Widely used in municipal sewage and drainage systems, it serves as an ideal replacement for traditional cement pipes, cast iron pipes, and other conventional materials. With advantages such as low installation cost, simple operation, convenient connection, and economical construction, this solution offers strong market potential and broad application prospects.

1. Raw Material
2. Mixing
3. Vacuum Feeding
4. Drying
5. Single Screw Extrusion
6. Calibration
7. Spray Cooling
8. Traction
9. Single Screw Glue Extrusion
10. Winding & Forming
11. Water Cooling
12. Cutting
13. Pipe Bracket
14. Inspection & Packing

• 1.1set Single screw extruder with vacuum loader& hopper dryer
• 2.1set Square tube die head & mould
• 3.1set Vacuum calibration table
• 4.1set Water spraying tank
• 5.1set Hauling machine
• 6.1set Single screw extruder with vacuum loader & hopper dryer
• 7.1set Melt adhesive extrusion die head
• 8.1set Rewinding forming machine
• 9.1set Cutting machine
• 10.1set Stacker
• 11.set PLC

• 1.The first part is PE Pipe extrusion line to extrude the PE/PP Square Shaped Pipe ( according to customers' requirement ).
  • Single Screw Extruder
  • Die Head (mold and mandrill)
  • Calibrator
  • Vacuum calibration&cooling Tank
  • Spray Cooling Tank
  • Haul-off
• 2. The second part is Spiral forming line to form and weld the big pipe.
  • Single Screw Extruder
  • Die Head
  • Spiral forming unit
  • Cutter
  • Bracket

Qingdao Huashida Machinery Co., LTD., founded in 2003, is a global developer, manufacturer and solution provider of plastic extrusion equipment. 70% of its customers come from overseas countries such as Europe, America, the Middle East and Southeast Asia.
Welcome to our factory to discuss cooperation!

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Besides manufacturing machines, we also make Heat shrinkable sleeves and electro fusion sleeves and plastic welders, which are widely used as pipe joints and sealings of plastic drainage water pipes, PU foam insulation pipelines, 2PE/3PE oil and gas pipelines.

Qingdao Huashida Machinery Co., Ltd. has been engaged in the development and producing of pipeline anti-corrosion equipment and raw materials since 2003. It is a leader manufacturer of heat-shrinkable sleeve and equipment in China. Huashida brand is favored by domestic and foreign customers. Devices of the equipment design have our patents. We passed ISO9001, ISO14001Environment, ISO45001 health certification. Up to now, more than 500 sets of production lines have been exported to Russia, Kazakhstan, Belarus, Egypt, Iran, Indonesia and other countries. Huashida brand heat shrinkable sleeve equipment in the production process of continuous summary and update has launched the fourth generation of products. The whole production line has reasonable design, intelligent operation, high speed and high efficiency, energy saving and electricity saving material labor cost. Continuous improvement in component design ensures uniform thickness, improved shrinkage, tensile strength and elongation at break. Product quality to meet the needs of different pipeline anti-corrosion demand. We have a professional after-sales service team to provide on-site and online video teaching and training. Help customers solve production problems as soon as possible.