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Product Description
Send your pipe diameter range and target monthly output to ceo@cxsljx.com — receive a customized quotation and factory layout proposal within 24 hours.
The BW-IV series PVC/PE double-wall corrugated pipe extrusion line is a turnkey production system engineered by Chenxing Machinery for manufacturing large-diameter corrugated pipes used in municipal drainage, agricultural water supply, and sewer infrastructure projects. The line integrates a twin-screw extruder, vacuum forming module, air-cooled corrugated pipe mold system, and programmable logic controller (PLC) into a single automated workflow. For manufacturers already operating plastic pelletizing or recycling lines, adding a corrugated pipe extrusion line creates a vertically integrated production capability from raw material processing to finished pipe output.
Two models are available: BW-IV (200 mm - 400 mm) and BW-IV-A (300 mm - 600 mm), both capable of processing virgin PVC, HDPE, and qualified recycled compounds. Each line is pre-assembled and tested at our manufacturing facility in Zhangjiagang, China before container-loading, reducing on-site commissioning to 10-15 working days.
Request Your Free Quotation Now → — Tell us your target pipe size and monthly output, and we will recommend the optimal BW-IV configuration with pricing.
![Close-up of BW-IV corrugated pipe mold blocks on closed-loop forming track producing 200mm diameter HDPE double-wall drainage pipe]( "Close-up of BW-IV corrugated pipe mold blocks on closed-loop forming track producing 200mm diameter HDPE double-wall drainage pipe")
![BW-IV control cabinet with Siemens PLC touchscreen interface displaying real-time extrusion parameters — temperature zones, screw speed, haul-off speed, and production counter]( "BW-IV control cabinet with Siemens PLC touchscreen interface displaying real-time extrusion parameters — temperature zones, screw speed, haul-off speed, and production counter")
![BW-IV-A air-cooled mold cooling section — no water bath required — forming corrugated outer wall with smooth inner wall in single continuous operation for 600mm drainage pipe]( "BW-IV-A air-cooled mold cooling section — no water bath required — forming corrugated outer wall with smooth inner wall in single continuous operation for 600mm drainage pipe")
| Parameter | BW-IV | BW-IV-A |
|---|
| Pipe Diameter Range | 200 mm - 400 mm | 300 mm - 600 mm |
| Installed Power | 11 kW | 15 kW |
| Mold Material | Special Aluminum Alloy | Special Aluminum Alloy |
| Mold Perimeter | 7 m | 7 m |
| Mold Cooling Method | Air Cooling | Air Cooling |
| Production Speed | 0.5 - 2.0 m/min | 0.5 - 2.0 m/min |
| Compatible Materials | PVC, HDPE, Recycled PE | PVC, HDPE, Recycled PE |
| Main Extruder Type | Single-screw / Twin-screw | Conical Single-screw / Twin-screw |
All electrical components are sourced from Siemens and Schneider Electric. Each line is CE certified and complies with ISO 9001:2015 quality management standards. For buyers also investing in upstream material preparation, our experimental hot & cold mixing unit enables formulation testing before full-scale production.
Unlike water-cooled steel molds, our special aluminum alloy mold blocks offer superior thermal conductivity while the air cooling configuration eliminates the need for chilled water circulation in the mold zone. This dual advantage reduces auxiliary equipment investment, daily electricity consumption, and ongoing maintenance costs. The 7-meter mold perimeter ensures consistent wall thickness across the full pipe circumference — critical for pipes used in pressurized water supply applications.
A single BW-IV line switches between PVC and HDPE production with a screw and temperature profile adjustment, allowing manufacturers to serve both rigid PVC drainage pipe markets and flexible HDPE sewer pipe markets without purchasing two separate lines. This flexibility is especially valuable in emerging markets where project specifications vary. Explore our full range of pipe extrusion solutions covering multiple pipe material categories.
Production speed adjusts based on pipe diameter, wall thickness, and material formulation. The PLC control panel maintains real-time synchronization between extruder output, mold block speed, and haul-off unit traction, preventing wall-thickness drift during extended production runs.
Combine the BW-IV line with Chenxing's downstream pelletizer machines for in-house recycled pellet production, or pair with our shredder-extruder recycling system to process production scrap back into raw material — creating a closed-loop manufacturing system that maximizes material utilization and profitability.
PVC or HDPE granules are loaded into the extruder via automatic vacuum feeding. The single-screw or twin-screw barrel heats and plasticizes the material into a homogeneous melt at precisely controlled zone temperatures.
The melt enters the die head and is formed between the special aluminum alloy mold blocks moving on a closed-loop track. The double-wall structure — a smooth inner wall fused to a corrugated outer wall — is created in a single continuous operation.
The formed pipe passes through the air-cooled zone, where ambient-temperature airflow rapidly stabilizes the corrugated geometry. No water bath is needed for mold cooling, significantly simplifying facility requirements.
A synchronized haul-off unit pulls the pipe at constant speed, and an automatic cutting machine sections the pipe to preset lengths without stopping the line. Finished pipes are ready for stacking and shipment.
| Application | Pipe Diameter Range | Recommended Model |
|---|
| Municipal Drainage & Sewer | 200-600 mm | BW-IV or BW-IV-A |
| Agricultural Water Supply | 200-400 mm | BW-IV |
| Cable Protection Ducts | 200-400 mm | BW-IV |
| Industrial Liquid Transport | 300-600 mm | BW-IV-A |
Not sure which model fits your project? Contact our engineering team — we will analyze your target market specifications and recommend the optimal configuration.
The BW-IV covers 200 mm to 400 mm diameters, while the BW-IV-A handles 300 mm to 600 mm. Both produce double-wall corrugated pipes with a smooth inner wall and corrugated outer wall in a single continuous operation. Production speed ranges from 0.5 to 2.0 m/min depending on diameter and wall thickness.
MOQ is 1 complete production line. Each line is custom-configured to your pipe diameter range, material type (PVC or HDPE), and target output capacity. After the initial line purchase, mold blocks and spare parts can be reordered individually with no minimum quantity.
All BW-IV lines are CE certified and comply with ISO 9001:2015 quality management standards. Electrical components are sourced from Siemens and Schneider Electric, meeting IEC international standards. For regional certifications such as UL, CSA, or GOST, we configure components accordingly during order specification.
Standard delivery time is 60-75 working days from order confirmation. On-site installation and commissioning takes 10-15 working days with Chenxing Machinery engineers present. Buyers preferring local installation teams can use our remote video guidance service at no additional cost.
The line processes virgin PVC, virgin HDPE, and blends with up to 30% recycled content. We recommend virgin HDPE with MFI 0.3-0.8 g/10min for double-wall corrugated pipes. The extruder screw and barrel are specifically designed for both virgin material and recycled compound compatibility.
24-month warranty on the extrusion line mainframe (extruder, mold track, haul-off unit). 12-month warranty on electrical components. Lifetime free online technical support is included. Paid on-site service is available within 7 working days globally. Spare parts ship within 48 hours from our warehouse.
FOB price depends on model selection, automation level, mold configuration, and auxiliary equipment. Contact our sales team with your pipe diameter range and monthly output target to receive a detailed quotation within 24 hours. We also provide a full factory layout drawing with every quotation.
A BW-IV line requires approximately 35 m x 10 m of factory floor space. Additional area is needed for raw material storage and finished pipe stacking. Installed power of 11 kW (BW-IV) or 15 kW (BW-IV-A) requires a standard 380V / 50Hz three-phase supply. No external water source is needed for the air-cooled mold system.
Choose BW-IV if your product range is 200-400 mm, covering most municipal drainage and agricultural water supply specifications. Choose BW-IV-A for 400-600 mm pipes used in main trunk sewers or large-scale water transfer projects. Both share identical mold cooling technology and production speed range.
Every line undergoes a full production run at our Zhangjiagang facility using your specified material and pipe diameter. Buyers attend the factory acceptance test in person or via live video stream. Test reports documenting output rate, wall thickness uniformity, and power consumption are provided with shipment documentation.
Yes. An optional online perforation module can be integrated into the BW-IV line for producing perforated corrugated drainage pipes used in subsurface drainage and leachate collection systems. The perforation unit operates synchronously with the mold block track for consistent hole spacing.
After the warranty period, we continue providing free online technical support for the lifetime of the machine. Paid on-site service, spare parts supply, and process optimization consultations remain available globally. Many customers also benefit from our recycling pelletizing systems to extend the value of their production investment.
Chenxing Machinery has designed, manufactured, and exported plastic pipe extrusion equipment to over 30 countries. Our product portfolio spans from plastic rattan extrusion lines and pelletizing systems to complete recycling plants, with hundreds of operating installations worldwide.
Every BW-IV and BW-IV-A line undergoes a full production run at our facility using your specified material and pipe diameter before disassembly and packing. Buyers attend the test in person or via live video stream. Test reports — output rate, wall thickness uniformity, power consumption — are provided with shipment documentation.
From factory layout planning to operator training, our project support includes CAD factory layout drawings, material formulation guidance, standard operating procedure manuals in English, and 5 working days of on-site operator training during commissioning.
Stay informed with the latest extrusion and recycling technology updates on Chenxing Machinery's news page, where we share market insights, equipment maintenance guides, and new product announcements relevant to pipe manufacturers.
Ready to launch or expand your corrugated pipe manufacturing operation? Here is what happens next:
You send us your requirements — pipe diameter range, target monthly output (in meters or tons), and preferred material (PVC or HDPE)
We deliver a customized proposal within 24 hours — including recommended model, line configuration, FOB price, delivery timeline, and factory layout drawing
You review and refine — our engineers adjust the configuration until it matches your exact needs
We build, test, and ship — with full video documentation of the factory acceptance test before container loading
Or email directly: ceo@cxsljx.com
Include your pipe diameter range and target monthly output for the fastest quotation turnaround.
