HDPE PP PVC Double Wall Corrugated Pipe Line for Stormwater Road Drainage
This HDPE PP PVC double wall corrugated pipe production line is a high-end structured wall pipe extrusion solution, specially engineered to manufacture large-diameter Weholite type hollow-wall structured corrugated pipes for municipal sewage drainage, urban stormwater management, and industrial wastewater pipeline infrastructure across the Middle East, Central Asia, Russia and Africa.
Adopting mature multi-material HDPE/PP/PVC plastic processing technology, this structured wall spiral pipe extruder fabricates pipes with optimized I-Beam structural wall profiles, delivering outstanding strength-to-weight ratio, adjustable heavy-duty ring stiffness (SN4/SN8/SN16) and precise consistent dimensional accuracy covering a full Ø200-3000 large diameter range for global municipal infrastructure projects.
Finished HDPE structured wall double wall spiral corrugated pipes serve as the premium replacement for traditional cement and cast iron drainage pipes widely used by overseas EPC contractors and pipe manufacturers. The structured wall drainage pipe features a certified 50-year underground service life, powerful anti-corrosion performance against acid, alkali and salt soil media, excellent ground load bearing capacity, and dual compatible connection solutions including rubber ring socket joints and electro-fusion welded joints for leak-free laying.
Key Features & Advantages
- Weholite I-Beam Structured Wall Technology: Mature Weholite hollow structured-wall design delivers superior ring stiffness (SN4/SN8/SN16) and high-impact performance, while greatly cutting pipe weight versus solid-wall pipes.
- 50-Year Underground Service Life: Excellent creep resistance and chemical stability grant full protection against acids, alkalis, salts and complex underground corrosive media for buried sewage and stormwater pipelines.
- HDPE PP PVC Multi-Material Processing Capability: One unified production line supports HDPE, PP and PVC raw materials, giving manufacturers maximum production flexibility.
- Ø 200-3000mm Ultra-Wide Diameter Coverage: Four complete machine models cover small-size municipal sewage collectors up to heavy-duty large-scale stormwater drainage culverts.
- Cost-Effective Municipal Infrastructure Solution: Lightweight I-Beam structured-wall pipes with reliable rubber-ring socket joint connections greatly lower total construction expenditure.
- PLC Synchronized Intelligent Control: Advanced PLC centralized control enables precise synchronous coordination between profile extrusion and spiral winding processes.
Technical Process
This HDPE PP PVC double wall corrugated pipe production line adopts a unique two-part synchronized manufacturing workflow to guarantee complete I-Beam structured-wall integrity for high-performance Weholite-type hollow wall pipes.
Process 1 - Profile Extrusion
Raw Material (HDPE/PP/PVC) → Vacuum Feeding → High-Torque Single Screw Extrusion → Square Tube Die Head Forming → Vacuum Calibration → Spray Cooling → Traction
High-precision profile extrusion delivers dimensionally stable base profiles, laying a solid foundation for subsequent spiral winding and forming of heavy-duty structured-wall drainage pipes.
Process 2 - Spiral Winding & Welding
Profile Pipe → Secondary Melt Adhesive Extrusion → Spiral Winding & Forming (Weholite I-Beam structure) → Water Cooling → Precision Automatic Cutting → Inspection & Packing
This synchronized dual-process system maintains reliable ring stiffness, consistent I-Beam geometric structure, and robust inter-layer welding bonding strength.
Product Parameters
| Model |
Pipe Diameter (mm) |
Main Extruder |
Forming Speed |
Max Output |
Installed Power |
| SKRG-1200 |
Ø400 - Ø1200 |
SJ-65(50) |
1-12 m/h |
320 kg/h |
230 KW |
| SKRG-1600 |
Ø800 - Ø1600 |
SJ-80(50) |
1-6 m/h |
500 kg/h |
310 KW |
| SKRG-2200 |
Ø1000 - Ø2200 |
SJ-90(65) |
0.5-5 m/h |
650 kg/h |
380 KW |
| SKRG-3000 |
Ø1600 - Ø3000 |
SJ-90(65) |
0.3-3 m/h |
800 kg/h |
390 KW |
Equipment Composition
This full-set HDPE PP PVC double wall corrugated pipe production line is assembled with two core synchronized processing units plus integrated PLC control system.
Profile Extrusion Unit
Includes high-torque single-screw extruder (SJ-65 / 80 / 90, model-configured), square-tube I-Beam die head, stainless-steel vacuum calibration table, spray cooling tank and heavy-duty haul-off machine.
Spiral Forming Unit
Composed of secondary melt-adhesive extruder, Weholite-spec spiral winding forming machine (winding speed: 0.3-12m/h), and automatic precision cutting system.
Central PLC Control System
Full-set centralized control realizes perfect synchronous linkage between profile extrusion and spiral winding procedures, guaranteeing stable ring stiffness and reliable finished-pipe quality.
Product Applications
Pipes manufactured by this Weholite I-Beam structured wall corrugated spiral pipe production line serve as the preferred industry solution for modern municipal and industrial drainage infrastructure.
Municipal Sewage Drainage
Urban sewage collection networks, main sewer trunk lines and municipal wastewater drainage systems with SN8 / SN16 high ring stiffness and certified 50-year underground service life.
Stormwater Management
Large-diameter stormwater drainage culverts, urban flood-control channels and rainwater retention pipeline systems across the full Ø200-3000mm production range.
Transport Infrastructure & Road Culverts
Large-size underground utility conduits, road culverts and highway drainage crossings with robust I-Beam structured wall delivering outstanding groundload bearing capacity.
Industrial Wastewater Transport
Chemical fluid conveyance and industrial wastewater management pipelines with excellent chemical resistance against acids, alkalis and salts.
Aged Pipeline Retrofitting & Rehabilitation
Replacement for worn-out concrete, clay and cast-iron municipal sewage drainage networks with compatible rubber-ring socket joint design.
Company Profile
Founded in 2003, Qingdao Huashida Machinery Co., Ltd. is a leading manufacturer specializing in HDPE PP PVC double wall corrugated pipe production lines, plastic pipe extrusion machinery, anti-corrosion coating lines, and pre-insulated pipe systems - with 21 years of industrial R&D and manufacturing experience.
With 70% of production exported to Europe, the Americas, and the Middle East, Huashida provides CE and ISO9001 certified solutions for global municipal drainage infrastructure and industrial pipeline projects.
Core Product Range:
- HDPE PP PVC Double Wall Corrugated Spiral Pipe Lines (Ø200-3000mm, Municipal Sewage Drainage)
- 3LPE/FBE Steel Pipe Anti-Corrosion Coating Lines (36-4200mm)
- Turnkey Pre-Insulated Pipe Production Lines (508-1620mm, District Heating & Oil Gas)
- HDPE Jacket Pipe Casing Extrusion Lines (110-2200mm)
- Cross-Linked PE Heat Shrink Sleeve Production Lines (Field Joint Coating)
- Geomembrane & Plastic Sheet Extrusion Systems
- Pipeline Joint Materials: Cross-linked PE Heat Shrink Sleeves and Electro-Fusion Joints
International Exhibition
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