PVC Pipe Production Line – Comprehensive Technical Dossier
General Overview
A modern PVC pipe production line is an integrated, fully-automatic system that converts raw PVC resin, stabilizers, lubricants, impact modifiers and fillers into standardized pipes for municipal water supply, drainage, irrigation, electrical conduit and industrial applications. The line is modular: each section can be upgraded, duplicated or bypassed to match market demands and regional standards (ISO, ASTM, DIN, GB/T, JIS). Typical configurations are single-strand (high diameter), dual-strand (medium diameter) and four-strand (small diameter), enabling a single plant to cover the entire product spectrum from Ø16 mm to Ø1000 mm without major retooling.
Core Process Flow
(1) Raw material handling: Vacuum loaders transfer resin and additives from silos to loss-in-weight feeders; gravimetric blenders guarantee ±0.2 % recipe accuracy.
(2) Hot-cold mixer group: A 500–2,000 L high-speed mixer (1,440 rpm) friction-heats the blend to 110–130 °C, followed by a 1,500–4,000 L low-speed cooler (70 rpm) that drops the temperature below 45 °C to prevent pre-gelation.
(3) Conical twin-screw extruder (SJZ series): The 38CrMoAlA screws are nitride-hardened to 950–1,000 HV and fitted with bimetallic flight tips for 30 % CaCO₃ recipes. A melt pressure sensor closed-loop-controls the screw speed to maintain constant head pressure (±0.2 MPa).
(4) Melt filtration: Dual-piston screen changers (120–400 mesh) with back-flush function remove gels, metal particles and unmelted agglomerates.
(5) Die head: Spiral mandrel design with chrome-plated flow channels; interchangeable die bushes and pins allow quick format change in < 20 min.
(6) Vacuum calibration and spray cooling: Two vacuum chambers (SUS304, 4–8 m long) create 0–-0.09 MPa to freeze the outer skin; a cascade water circuit (8–20 °C) and high-pressure sprayers remove heat at 30–80 kW/h.
(7) Haul-off: Multi-belt caterpillar units (top & bottom synchronized) use 1.5–5.5 kW servo motors per caterpillar; traction force is measured by load cells and auto-adjusted.
(8) Non-dust cutting: Planetary cutter for Ø16–250 mm (±1 mm end-cut squareness); saw cutter for Ø315–1000 mm with chip-extraction hood.
(9) On-line belling: Dual-oven sockets (Rieber or solvent-cement type) heat the pipe end to 150–180 °C; internal mandrel forms the socket; cooling ring sets the final dimension within ±0.3 mm ovality.
(10) Automatic stacking & bundling: Servo-driven pipe aligner and strapping machine create hexagonal bundles ready for shrink-wrapping.
Comprehensive Technical Parameters Table
(All data refer to 50 Hz supply; 60 Hz versions available with 20 % higher throughput)
| Model | Pipe Range (mm) | Max. Out-put (kg/h) | Extruder Type | Screw Dia./L:D | Main Motor (kW) | Heating Zones (Barrel + Die) | Vacuum Tank Length (m) | Spray Cooling Power (kW) | Haul-off Cater-pillars | Linear Speed (m/min) | Total Installed Power (kW) | Foot-print L×W×H (m) |
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| PVC-32(4) | 16–32 | 250 | SJZ-65/132 | 65/132 | 37 | 4+3 | 4 | 14 | 4 | 25 | 120 | 32×3.0×3.2 |
| PVC-63(2) | 20–63 | 300 | SJZ-65/132 | 65/132 | 37 | 4+3 | 6 | 18 | 2–6 | 20 | 130 | 35×3.2×3.2 |
| PVC-110 | 20–110 | 350 | SJZ-80/156 | 80/156 | 55 | 5+4 | 6 | 22 | 3–6 | 15 | 160 | 36×3.5×3.3 |
| PVC-160 | 50–160 | 450 | SJZ-80/156 | 80/156 | 75 | 5+4 | 6 | 26 | 4–8 | 12 | 180 | 38×4.0×3.5 |
| PVC-250 | 75–250 | 600 | SJZ-92/188 | 92/188 | 110 | 6+5 | 8 | 40 | 6–8 | 10 | 250 | 42×4.5×3.8 |
| PVC-450 | 110–450 | 850 | SJZ-110/220 | 110/220 | 185 | 7+5 | 10 | 60 | 8–10 | 6 | 350 | 48×5.5×4.2 |
| PVC-630 | 250–630 | 1,000 | SJZ-110/220 | 110/220 | 220 | 7+5 | 12 | 75 | 10–12 | 4 | 420 | 55×6.0×4.5 |
| PVC-1000 | 400–1000 | 1,400 | SJZ-130/26 | 130/26 | 315 | 8+6 | 14 |
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Advanced Features & Upgrades
• Industry 4.0 Ready: OPC-UA and Ethernet-IP interfaces feed real-time OEE data to central MES; digital twin software predicts screw wear and schedules maintenance.
• Energy Optimization: Ceramic infrared heaters with 30 % lower power draw; regenerative braking on haul-off returns 8–12 % of electricity to the grid.
• Recipe Library: 100+ pre-loaded formulations (uPVC, CPVC, M-PVC, foam-core) selectable from HMI; automatic switch-over takes < 5 min.
• Quick-Change Tooling: Hydraulic clamping and rail-mounted die cart reduce format change downtime to 15 min (Ø110 mm → Ø160 mm).
• Inline Quality Control: Ultrasonic wall-thickness gauge (±0.02 mm accuracy) triggers reject gate; laser OD scanner ensures ±0.1 mm outer diameter.
• Noise Suppression: Acoustic enclosures < 80 dB(A) at 1 m for the extruder and haul-off.
• Safety: Category 4 safety relays, light curtains at cutter and belling zone, ATEX-certified dust collection for CaCO₃ handling.
Utility & Consumption Benchmarks (per 1,000 kg finished pipe)
Electricity: 260–320 kWh (depending on diameter and recipe)
Cooling Water: 6–9 m³ (closed-loop chiller optional)
Compressed Air: 0.4 Nm³ at 0.6 MPa
Steam (for belling): 40 kg (optional electric heaters)
PVC Scrap Rate: < 0.5 % thanks to closed-loop gravimetric control.
Installation & After-Sales Support
• Foundation drawings delivered within 5 days after contract; turnkey commissioning in 7–10 days.
• Remote VPN diagnostics reduce 90 % of service calls to < 30 min resolution.
• Lifetime cloud backup of all PLC programs and HMI recipes.
• Training package: 3 days on-site + 2 days virtual refresher every 12 months.
• Wear parts (screw, barrel, heaters, belts) stocked in regional warehouses for 48 h delivery.
With these specifications and features, the PVC pipe production line offers an optimal balance of productivity, flexibility, energy efficiency and digital integration, allowing manufacturers to stay competitive in both high-volume commodity and specialty niche markets.
+86-18561886575 (Mr.Wu) 
+8618561886575
238 Yangzhou West Road, Jiaozhou City, Qingdao City, Shandong Province