Product Description
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.
Applications
Urban sewerage and drainage systems
Infrastructure and civil engineering projects
Industrial wastewater discharge
Culverts and stormwater systems
Features
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)
Product Parameters
| Style | Diameter
(mm) | Extruder | Extrusion speed
Meter | Capacity (Kg/h) | Dimension (m) |
| Style | Total Power
(KW) |
| SKRG1200 | 300-1200 | SJ65× 30 | 230 | 1-12 | 320 | 26× 18× 5.0 |
| SKRG2200 | 1000-2200 | SJ90× 30 | 380 | 0.5-5 | 650 | 28× 19× 5.0 |
| SKRG3000 | 1600-3000 | SJ90× 30 | 390 | 0.3-3 | 800 | 48× 26× 6.0 |
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)
Company Profile
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
Certifications
Detailed Photos
- client -
- packaging -
