This advanced production line is designed for manufacturing HDPE spiral wound pipes-also known as Krah pipes, structural wall drainage pipes, or spiral interlock pipes. These pipes are increasingly replacing traditional cement and cast iron pipes in municipal sewerage and drainage systems, thanks to their high performance, durability, and cost-effective installation.

Urban sewerage and drainage systems

Infrastructure and civil engineering projects

Industrial wastewater discharge

Culverts and stormwater systems

Pipe Features

High ring stiffness & brunt intensity

Lightweight yet pressure-resistant

Excellent chemical resistance (acid, alkali, salt, etc.)

Creep deformation resistance

50-year service life

Eco-friendly and non-polluting

Key Features of the Machine

Energy-efficient extrusion with optimized screw design for low-temperature plasticization

Dual extrusion system for forming and adhesive bonding in spiral winding

Stable spiral forming unit with multi-axis transmission and rotational die-head for strong and uniform pipe wall construction

Automatic saw cutting for accurate pipe lengths

Fully automated PLC system with multi-point control and dual screen operation (pipe forming, adhesive extrusion, winding, and cutting)

Production Line Composition

1. PE Pipe Extrusion Line

Vacuum loader

Hopper dryer

High-efficiency single screw extruder & die-head mould

Vacuum calibration tank

Spray cooling tank

Hauling machine

2. Spiral Forming Line

High-efficiency single screw extruder & die-head

Spiral forming unit

Glue extruder (adjustable in 4 directions)

Saw cutting unit

Pipe stacker

PLC Control System (OMRON/MITSUBISHI with touch screen interface)

Qingdao Huashida Machinery Co., Ltd. is a specialized manufacturer engaged in the development and production of plastic pipe machinery, municipal pipe equipment, pipe insulation and anti-corrosion systems, as well as pipe jointing and anti-corrosion materials.

Our main product lines include:

HDPE Jacket Pipe Production Line for Pre-insulated Pipes (Diameter: 110-2000mm)

Rigid Pre-insulated Pipe Production Line

Flexible PERT Pre-insulated Pipe Production Line

Steel Pipe Anti-corrosion Coating Line for FBE, 2LPE, and 3LPE coatings

Steel Pipe Surface Derusting (Shot Blasting) Line

PE Pressure Pipe / Water and Gas Supply Pipe Extrusion Line

PP/PE Plastic Sheet, Board, and Geomembrane Production Line

NBR/PVC Thermal Insulation Tube and Sheet Production Line

Pipeline Anti-corrosion Materials & Tools, including:

○Heat Shrink Joint Coating Sleeves

○Electrofusion Weldable Joint Sleeves

○Portable Plastic Welding Guns (Extruders)

○ PE/PP Welding Rods

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