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Product Description
The PVC Plastic-Bar-Reinforced Pipe Extrusion Line from Chenxing Machinery is a purpose-built, dual-host compound extrusion system engineered to manufacture flexible PVC hoses reinforced with an integral plastic spiral rib (plastic bar). Unlike conventional hose lines that bond a separate reinforcement layer in a secondary step, this reinforced pipe production line / spiral hose extrusion fuses the tube body and the spiral reinforcement in a single die-head pass — delivering a homogeneous, leak-free, mechanically superior composite hose.
Built around two synchronized SJ-45×28 single-screw extruders, the line produces spiral reinforced flexible pipes in the φ25–φ50 mm diameter range. With an installed power of 31 kW and an average operating consumption of only 21.7 kW, the system embodies Chenxing's energy-efficient design philosophy while maintaining the throughput and dimensional stability demanded by professional pipe manufacturers.
This product detail page provides a complete technical reference — from the complete production line layout and the twin-extruder compound die, through the full technical specification table, key features, the step-by-step co-extrusion process, end-product applications, and a structured FAQ — so that procurement engineers and distributors can evaluate the line with confidence.
The PVC plastic-bar-reinforced pipe extrusion line (also known as a spiral strip hose production line) is a complete turnkey solution for producing flexible, spiral-ribbed PVC hoses. The defining characteristic of the finished product is its continuous internal/external plastic spiral reinforcement, which provides mechanical support without the weight, corrosion risk, or cost of a metal skeleton.
At the heart of the system are two independent SJ-45×28 extruders operating in perfect synchronization:
Host A extrudes the smooth PVC tube body (the base material that forms the inner and outer walls).
Host B extrudes the molten plastic spiral rib (the "plastic bar" reinforcement) that is helically wound and embedded into the tube wall.
Both melt streams converge inside a dedicated compound forming die, where the spiral rib and the tube body are co-extruded and fused in a single pass. The result is a flexible hose that resists crushing, withstands negative pressure (vacuum), resists bending fatigue, and offers excellent internal flow characteristics — all while remaining lightweight and easy to install.
The line is controlled by two independent PLC electrical cabinets featuring PID temperature control, variable-frequency speed regulation, and one-touch start/stop. This makes the pipe extrusion line / extrusion solutions suitable for both first-time operators and high-volume contract manufacturers.
Key value propositions at a glance:
| Value Driver | Benefit |
|---|---|
| One-pass compound co-extrusion | No secondary bonding; homogeneous structure |
| Twin SJ-45×28 extruders | Stable, synchronized melt supply |
| φ25–φ50 mm range | Covers most light-industrial & agricultural hose sizes |
| 31 kW installed / 21.7 kW average | ~30% energy saving vs. conventional lines |
| Modular design | Independent maintenance of each unit |
| Fully enclosed operation | No dust emission, cleaner workshop |
For manufacturers already running other Chenxing systems — such as the PVC WPC foam board extrusion line or the PVC hot-cutting pelletizing line — this spiral hose line integrates naturally into a diversified PVC product portfolio.
A complete reinforced pipe production line / spiral hose extrusion consists of the following integrated stations, arranged in a linear, space-efficient flow:
Two electrical control cabinets (PLC, PID, VFD, one-touch control)
Two material hoppers (one per extruder)
Two SJ-45×28 single-screw extruders (Host A + Host B)
Compound forming die (tube body + spiral rib convergence)
Cooling & sizing tank / vacuum calibration table
Haul-off (traction) unit
Winding / cutting system
The dual-extruder architecture is the technological core of this spiral strip hose production line. Each SJ-45×28 machine features a 45 mm screw diameter and a 28:1 length-to-diameter ratio — a geometry optimized for thorough plasticization of rigid and semi-rigid PVC compounds.
Host A (Tube Body): Delivers a uniform, bubble-free melt that forms the continuous inner and outer walls of the hose.
Host B (Spiral Rib): Delivers a slightly higher-viscosity melt that is shaped into a continuous helical "plastic bar" inside the die.
The compound die is the most critical tooling component. It is precision-machined so that the spiral rib is embedded concentrically (or offset per design) within the tube wall as the two melts meet. Because both materials are the same PVC family and are fused while molten, there is no adhesive, no delamination, and no weak interface — a decisive advantage over post-bonded reinforcement methods.
Screw and barrel are manufactured from wear-resistant alloy steel, extending service life under continuous operation. The twin configuration also provides redundancy: routine maintenance on one extruder can be scheduled without a full production stop when spare capacity exists.
Downstream of the die, the molten composite enters the cooling and sizing section. A stainless-steel water tank (or vacuum calibration table) rapidly solidifies the profile while holding the target outer diameter and spiral geometry. Precise temperature zoning prevents warping and ensures the hose exits straight and dimensionally stable.
The haul-off unit — typically a caterpillar haul-off machine / pipe haul-off — grips the hose with even, adjustable traction to maintain a constant line speed synchronized with extrusion output. Stable haul-off tension is essential for consistent wall thickness and spiral pitch.
Finally, the finished hose is handled by the winding cutting system. For continuous flexible hose, a pipe coiler pipe winding machine coils the product into neat, market-ready rolls. When cut-length products are required, a dust-free pipe cutter pipe cutting machine delivers clean, burr-free ends without workshop dust pollution. For rigid-end finishing, a pipe belling machine pipe socketing unit can be added to the downstream cell.
The table below summarizes the main technical parameters of the SJ-45 PVC plastic-bar-reinforced pipe extrusion line. All values are verified by Chenxing Machinery engineering and reflect standard configuration.
| Parameter | Value | Unit | Remarks |
|---|---|---|---|
| Model | SJ–45 | — | Overall line designation |
| Extruder Model | SJ–45×28 | — | Single-host specification |
| Screw Diameter | 45 | mm | Per extruder |
| L/D Ratio | 28:1 | — | Length-to-diameter |
| Number of Extruders | 2 | set | Host A (body) + Host B (rib) |
| Pipe Diameter Range | φ25–φ50 | mm | Outer diameter |
| Installed Power | 31 | kW | Total motor power |
| Average Energy Consumption | 21.7 | kW | Actual running load (~30% saving) |
| Control System | PLC + PID + VFD | — | Two independent cabinets |
| Heating Control | PID temperature control | — | Zone-based |
| Speed Regulation | Variable frequency | — | Synchronized twin drives |
| Operation Mode | Fully enclosed | — | Dust-free |
| Customization | Available | — | Larger bore PE PP |
For auxiliary equipment sizing — such as process cooling — many customers pair the line with an SML air-cooled chiller / industrial chiller to stabilize tank temperature in warm climates.
The PVC plastic-bar-reinforced pipe extrusion line delivers a combination of process, structural, and operational advantages that distinguish it from single-extruder or post-bonded hose lines.
Two SJ-45×28 extruders feed a single compound die where the tube body and the spiral plastic rib are fused simultaneously. There is no secondary gluing, no lamination step, and no interface weakness. This one-pass spiral strip hose production line technology guarantees structural integrity along the entire hose length.
The embedded spiral rib acts as a continuous mechanical skeleton. It resists external crushing, withstands internal pressure, holds shape under vacuum (negative pressure) without collapse, and tolerates repeated bending without kinking. These properties make the hose suitable for demanding ventilation, suction, and transfer duties.
Because the inner wall is extruded as a continuous smooth surface, fluid, gas, and powder/granular media encounter minimal resistance. The hose is ideal for pneumatic conveying, liquid transfer, and dust/particle extraction where flow efficiency matters.
Traditional reinforced hoses often rely on steel wire or spring steel cores. This line eliminates the metal entirely, producing a hose that is lighter, non-corrosive, and easier to handle, coil, and install — reducing logistics and labor cost for end users.
Although the installed power is 31 kW, the intelligent load-matching and efficient screw design keep the average consumption at just 21.7 kW — roughly a 30% saving versus comparable conventional lines. Lower energy cost directly improves the customer's per-meter margin.
Each station (extruder, die, cooling, haul-off, winder) is an independent, serviceable module. A fault in one unit can be isolated without dismantling the whole line, and wear parts such as screws and barrels can be maintained on a planned schedule. This modularity is shared across Chenxing Machinery extrusion platforms.
The line runs in a fully enclosed configuration with no powder or dust emission, supporting a cleaner, safer workshop environment and helping customers meet workplace and environmental compliance requirements.
While the standard range is φ25–φ50 mm in PVC, Chenxing can engineer larger diameters or adapt the line for PE / PP materials, giving distributors a flexible platform to serve multiple market segments from one core technology.
The production of spiral reinforced PVC hose on this reinforced pipe production line / spiral hose extrusion follows a tightly synchronized six-stage process:
Twin Hopper Feeding
Two material hoppers supply the two extruders independently. An optional screw feeder / automatic feeding machine can automate and meter raw input for uninterrupted runs. PVC compound (powder or pellet) is loaded per formulation.
Synchronized Twin-Extruder Melting
Host A plasticizes the tube-body compound; Host B plasticizes the spiral-rib compound. Both SJ-45×28 screws run at PLC-synchronized speeds with PID-controlled barrel temperatures to ensure consistent melt quality.
Die-Head Convergence & Compound Forming
The two melt streams enter the compound die, where the spiral rib is shaped and embedded into the tube wall in a single co-extrusion pass. This is the signature one-pass forming step that defines the product.
Cooling & Calibration
The hot composite profile passes through the water tank / vacuum calibration table. Controlled cooling fixes the outer diameter, wall thickness, and spiral geometry, producing a dimensionally stable hose.
Haul-off (Traction)
A caterpillar haul-off machine / pipe haul-off pulls the hose at a constant, extrusion-matched speed, preventing stretch or compression defects.
Winding / Cutting
The finished hose is coiled by a pipe coiler pipe winding machine into rolls, or cut to length by a dust-free pipe cutter pipe cutting machine for rigid-end applications.
For in-house raw-material preparation, Chenxing also supplies the high-speed mixer, plastic crusher, SMF disc grinding pulverizer, plastic grinding machine, ZSQ vibrating screen, and plastic pelletizer — enabling a closed-loop, self-sufficient PVC compounding workshop.
The finished spiral reinforced PVC hose serves a broad spectrum of industries. Below is a categorized breakdown of typical use cases.
Ventilation & dust extraction: Flexible ducting for workshops, fume, and particle removal.
Chemical media transfer: Corrosion-resistant conveyance of mild acids, alkalis, and solvents.
Compressed air lines: Lightweight, kink-resistant air supply hoses.
Pneumatic conveying: Smooth inner wall supports powder and granular transfer.
Drip & spray irrigation: Flexible, UV-stable hose for field and greenhouse watering.
Greenhouse ventilation: Easy-to-route air ducts for climate control.
Livestock watering: Hygienic, lightweight transfer lines.
Drainage & dewatering: Temporary and permanent low-pressure drainage.
Exhaust & ventilation: Site and basement air movement.
Cable conduit: Protective sheathing for electrical runs.
Surface water diversion: Portable, reusable hose for channel and pond management.
Irrigation network support: Connectivity hose for distributed systems.
Mine ventilation: Negative-pressure-resistant ducting in underground and surface operations.
Marine auxiliary lines: Corrosion-free onboard utility hoses.
Distributors serving these segments can cross-sell related pipe extrusion line / extrusion solutions from the Chenxing catalog, including the PVC WPC foam board extrusion line and the PVC hot-cutting pelletizing line.
Chenxing Machinery (Zhangjiagang Chenxing Machinery Co., Ltd.) has built a reputation for robust, energy-efficient extrusion systems backed by hands-on engineering support. Choosing our PVC plastic-bar-reinforced pipe extrusion line means:
Proven compound co-extrusion know-how — our die technology is field-validated across hundreds of installed lines.
Energy efficiency as standard — 21.7 kW average consumption protects your operating margin.
Modular, serviceable architecture — minimize downtime with independent, swappable stations.
Full auxiliary ecosystem — from high-speed mixer to pipe coiler, one supplier covers your workshop.
Customization capability — bore size, material (PVC/PE/PP), and automation level tailored to your market.
Export-ready support — documentation, commissioning guidance, and spare-parts supply for global B2B buyers.
Our reinforced pipe production line / spiral hose extrusion range is designed for manufacturers who need reliable output, low cost per meter, and a hose their own customers will specify repeatedly.
A standard single-extruder hose line typically produces a plain or lightly reinforced tube and may require a separate bonding step to add a reinforcement layer. The Chenxing spiral strip hose production line uses two synchronized SJ-45×28 extruders and a compound die to fuse the tube body and the plastic spiral rib in one pass. This eliminates adhesives, prevents delamination, and yields a homogeneous hose with superior crush, vacuum, and bending resistance. For manufacturers targeting industrial ventilation or suction hose markets, the structural advantage translates directly into a premium, longer-lasting product.
The standard configuration covers an outer diameter range of φ25–φ50 mm, which addresses the majority of light-industrial, agricultural, and construction flexible-hose applications. If your market requires larger diameters (for example φ63 mm, φ75 mm, or φ100 mm and above), Chenxing can engineer a customized version of the reinforced pipe production line / spiral hose extrusion with appropriately sized extruders, dies, and downstream equipment. We recommend sharing your target size matrix and annual volume so our engineering team can propose the most cost-effective configuration.
Although the installed (nameplate) power is 31 kW, the intelligent load-matching and efficient 28:1 screw geometry keep the average operating consumption at only 21.7 kW — roughly a 30% saving versus conventional comparable lines. Energy cost is one of the largest variables in per-meter production economics, so this saving has a direct, measurable impact on your gross margin. Pairing the line with an SML air-cooled chiller / industrial chiller further stabilizes cooling efficiency in hot climates.
The standard line is optimized for PVC compounds, which deliver the best balance of cost, corrosion resistance, and process stability for spiral reinforced hose. However, Chenxing can adapt the screw design, barrel, and die to process PE or PP materials for customers serving markets that require different chemical or temperature profiles. Because the core one-pass compound co-extrusion principle remains the same, the spiral strip hose production line technology transfers well across thermoplastic families with the right tooling.
Beyond the extrusion line itself, a self-sufficient PVC hose workshop typically needs material preparation and finishing equipment. Chenxing supplies the full set: high-speed mixer, plastic crusher, SMF disc grinding pulverizer, plastic grinding machine, ZSQ vibrating screen, screw feeder, plastic pelletizer, caterpillar haul-off, pipe coiler, and dust-free cutter. Sourcing everything from Chenxing Machinery simplifies commissioning, spare-parts management, and after-sales support.
The line is controlled by two PLC cabinets with PID temperature control, variable-frequency speed regulation, and one-touch start/stop, so operators can learn the routine quickly. The modular design means each station is independently serviceable — a screw, barrel, or haul-off belt can be maintained without dismantling the entire line. Chenxing provides commissioning support, operation manuals, and spare-parts lists. For related downstream finishing, our pipe belling machine guide explains socketing options if you expand into rigid-end products later.
The finished hose serves industrial ventilation and dust extraction, agricultural irrigation and greenhouse climate control, construction drainage and cable conduit, water-conservancy diversion, and mining/marine auxiliary lines. Its light weight, corrosion resistance, and negative-pressure stability make it a strong substitute for metal-reinforced ducting in many applications. Distributors can position it as a cost-effective, easy-to-install alternative across these segments, and bundle it with other pipe extrusion line / extrusion solutions from our catalog to broaden their offering.
Ready to evaluate the PVC Plastic-Bar-Reinforced Pipe Extrusion Line for your factory? Chenxing Machinery makes procurement straightforward with a clear 4-step inquiry process.
Send Your Requirements — Tell us your target pipe diameter range (standard φ25–φ50 mm or customized), material (PVC/PE/PP), and estimated annual output. Include any auxiliary equipment needs such as a pipe coiler or caterpillar haul-off.
Receive a Tailored Quotation — Our engineering team returns a configuration-specific quote covering the reinforced pipe production line / spiral hose extrusion, lead time, and optional auxiliaries (mixer, crusher, chiller, etc.).
Confirm & Schedule Production — Upon order confirmation, we build, test-run, and document your line, then arrange shipping and commissioning support.
Commissioning & After-Sales — We assist with installation, operator training, and ongoing spare-parts supply to keep your line running at 21.7 kW-class efficiency.
Contact
Contact: Nicole
WhatsApp / Tel: +86 15951187228
Email: ceo@cxsljx.com
Company: Zhangjiagang Chenxing Machinery Co., Ltd.
Website: Chenxing Machinery
