The HDPE/PP Twin-screw 3-layer Pipe Line is a cutting-edge solution for manufacturing high-pressure reinforced thermoplastic pipes (RTP), combining twin-screw extrusion with layer co-extrusion technology to deliver superior performance.
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This system features three independent extruders—each optimized for its specific layer—to create pipes with excellent pressure resistance (up to 200 bar) and chemical durability. The inner core layer (HDPE/PP) ensures smooth flow and corrosion resistance; the middle reinforcement layer (glass fiber/aramid/steel wire) provides structural strength; and the outer layer (UV-stabilized HDPE) offers environmental protection. This layered structure enhances pipe lifespan by 50% compared to single-layer alternatives.
Extruder Configuration: 3 twin-screw extruders (45mm, 65mm, 90mm) with interlocked speed control
Maximum Output: 1,200 kg/h (depending on pipe diameter and material)
Pipe Diameter Range: 50–300mm (customizable up to 400mm with die modifications)
Layer Thickness: Core (2–5mm), Reinforcement (1–3mm), Outer (1–4mm)
Pressure Resistance: Up to 200 bar (hydrostatic test pressure: 300 bar for 1 hour)
Control System: Allen-Bradley Logix 5000 PLC with SCADA integration and predictive analytics
Cooling System: Multi-zone vacuum tank with automatic water level and temperature control
Power Consumption: 500 kW (with regenerative braking for energy efficiency)
Oil & Gas Industry:
Used for subsea pipelines (up to 500m water depth) and onshore gathering lines, offering corrosion resistance to hydrocarbons and saltwater (compliant with API 15S and DNV GL-ST-F101).
Mining Industry:
Supports slurry transportation pipes (for coal, mineral ores), with abrasion resistance (weight loss ≤50mg per ASTM G65) and high impact strength (Charpy impact ≥20kJ/m² at -40°C).
Water Treatment:
Ideal for high-pressure water mains (municipal water supply) and sewage force mains, resisting chlorine and chemical degradation (compliant with ISO 4427 and AWWA C906).
Renewable Energy:
Used in hydrogen transport pipelines (up to 35MPa) and geothermal fluid transmission, with material compatibility tested per ISO 17268 (hydrogen service) and API 17E (geothermal applications).
Q: What reinforcement materials are compatible?
A: The line supports continuous glass fiber rovings (tensile strength ≥2,500MPa), aramid fibers (modulus ≥70GPa), and galvanized steel wires (yield strength ≥400MPa), with customizable impregnation systems for each material.
Q: How is the pipe’s pressure resistance tested?
A: Every production batch undergoes hydrostatic testing at 1.5x the rated pressure (e.g., 300 bar for 200 bar rated pipes) for 1 hour, with pressure decay monitored to ≤5% of initial pressure, ensuring no leaks or structural deformation.
Q: What is the minimum bend radius of the pipes?
A: The pipes maintain structural integrity with a minimum bend radius of 5x their outer diameter (e.g., 1.5m for 300mm OD pipes), enabling flexible installation in tight spaces without joint failure.
Q: Does the line support anti-static coatings?
A: Yes, the outer layer can be formulated with carbon black or conductive additives to achieve surface resistance ≤10?Ω, meeting ATEX requirements for explosive environments in mining and oil & gas applications.
This system features three independent extruders—each optimized for its specific layer—to create pipes with excellent pressure resistance (up to 200 bar) and chemical durability. The inner core layer (HDPE/PP) ensures smooth flow and corrosion resistance; the middle reinforcement layer (glass fiber/aramid/steel wire) provides structural strength; and the outer layer (UV-stabilized HDPE) offers environmental protection. This layered structure enhances pipe lifespan by 50% compared to single-layer alternatives.
Extruder Configuration: 3 twin-screw extruders (45mm, 65mm, 90mm) with interlocked speed control
Maximum Output: 1,200 kg/h (depending on pipe diameter and material)
Pipe Diameter Range: 50–300mm (customizable up to 400mm with die modifications)
Layer Thickness: Core (2–5mm), Reinforcement (1–3mm), Outer (1–4mm)
Pressure Resistance: Up to 200 bar (hydrostatic test pressure: 300 bar for 1 hour)
Control System: Allen-Bradley Logix 5000 PLC with SCADA integration and predictive analytics
Cooling System: Multi-zone vacuum tank with automatic water level and temperature control
Power Consumption: 500 kW (with regenerative braking for energy efficiency)
Oil & Gas Industry:
Used for subsea pipelines (up to 500m water depth) and onshore gathering lines, offering corrosion resistance to hydrocarbons and saltwater (compliant with API 15S and DNV GL-ST-F101).
Mining Industry:
Supports slurry transportation pipes (for coal, mineral ores), with abrasion resistance (weight loss ≤50mg per ASTM G65) and high impact strength (Charpy impact ≥20kJ/m² at -40°C).
Water Treatment:
Ideal for high-pressure water mains (municipal water supply) and sewage force mains, resisting chlorine and chemical degradation (compliant with ISO 4427 and AWWA C906).
Renewable Energy:
Used in hydrogen transport pipelines (up to 35MPa) and geothermal fluid transmission, with material compatibility tested per ISO 17268 (hydrogen service) and API 17E (geothermal applications).
Q: What reinforcement materials are compatible?
A: The line supports continuous glass fiber rovings (tensile strength ≥2,500MPa), aramid fibers (modulus ≥70GPa), and galvanized steel wires (yield strength ≥400MPa), with customizable impregnation systems for each material.
Q: How is the pipe’s pressure resistance tested?
A: Every production batch undergoes hydrostatic testing at 1.5x the rated pressure (e.g., 300 bar for 200 bar rated pipes) for 1 hour, with pressure decay monitored to ≤5% of initial pressure, ensuring no leaks or structural deformation.
Q: What is the minimum bend radius of the pipes?
A: The pipes maintain structural integrity with a minimum bend radius of 5x their outer diameter (e.g., 1.5m for 300mm OD pipes), enabling flexible installation in tight spaces without joint failure.
Q: Does the line support anti-static coatings?
A: Yes, the outer layer can be formulated with carbon black or conductive additives to achieve surface resistance ≤10?Ω, meeting ATEX requirements for explosive environments in mining and oil & gas applications.
