Views: 0 Author: Site Editor Publish Time: 2026-05-29 Origin: Site
Reinforced Thermoplastic Pipe (RTP) is increasingly replacing traditional steel and pure plastic pipes in oil & gas transmission, high-pressure water supply, and municipal networks, thanks to its lightweight, high strength, and corrosion resistance. One of the core manufacturing technologies is non-metallic rope winding.
JMG Machinery’s RTP pipe production line with non-metallic rope winding is a turnkey system for continuous manufacturing of composite pipes. It winds high-strength polyester or aramid ropes onto the inner pipe with precise pitch, then applies an outer protective layer. The line produces pipes with internal diameter from 50 mm to 150 mm at a maximum speed of 10 m/min.
Inner layer extrusion: Thermoplastic (e.g., HDPE) is extruded into a tube.
Rope winding: While the inner pipe is still bondable, multiple strands of polyester or aramid rope are wound at controlled angle and tension.
Outer coating: A thermoplastic outer layer is extruded to encapsulate the reinforcement.
Cooling & sizing: Vacuum calibration and water spray cooling finalize the pipe shape.
This structure increases hoop and axial strength significantly – burst pressure can be 3–5 times higher than conventional PE pipes.
Module | Function |
|---|---|
Inner extruder | Produces the plastic inner tube |
Rope winding unit | Multi-payoff creel with closed-loop tension control |
Outer extruder | Extrudes the protective cover layer |
Cooling tank | Vacuum sizing + spray cooling |
Haul-off & winder | Constant tension winding onto reels |
Control system | PLC + HMI for real-time monitoring |
Reinforcement materials: Polyester rope, aramid (Kevlar) rope, fiberglass rope
Pipe ID range: 50 – 150 mm
Line speed: ≤10 m/min
Annual capacity (DN100, 4 MPa): ~550 km
Power supply: 380V/50Hz (customizable)
Installed power: approx. 120–180 kW
Line length: about 25–30 m
Oil & gas: Onshore and shallow-water flowlines, corrosion-free replacement for steel pipes
High-pressure water supply: Mine drainage, industrial high-pressure water transmission
Municipal networks: Lining pipes for trenchless rehabilitation, pressure sewer lines
Marine floating hoses: Lightweight and corrosion-resistant for offshore use
High strength, low weight: Aramid reinforcement allows working pressure up to 6–10 MPa; weight is only 1/5 of steel pipes.
Corrosion resistant & maintenance free: Fully plastic/fiber structure – no cathodic protection needed.
Flexible & spoolable: Single length up to hundreds of meters; fewer joints, faster installation.
Process controllability: Closed-loop tension control and adjustable winding angle for different pressure ratings.
High ROI: Quick commissioning, lower raw material cost than steel, short payback period.
