 |
| Quantity: | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Product Description
The PU/TPU Flexible Spiral Hose Extrusion Line from Chenxing Machinery is a high-performance single-screw extrusion system engineered for the precision manufacturing of flexible PU (polyurethane), TPU, NYLON, and PE spiral hoses. Built to handle a broad spectrum of thermoplastic materials — including PE, PP, PA, FPVC, PU, PLA, and ABS — this production line delivers exceptional versatility for manufacturers serving the 3D printing consumables, automotive, pneumatic tool, hydraulic, gardening, and industrial cleaning sectors.
At the heart of this pipe extrusion line lies a high-speed single-screw extruder paired with a low-noise fan and a hardened-gear transmission system, ensuring stable, high-torque plasticizing across all six available screw diameters (SJ30 through SJ65). The downstream configuration includes a precision-machined die head, a vacuum sizing and cooling tank with intelligent water circulation, an automatic chipless cutting unit, and a centralized PLC control cabinet — forming a fully integrated, space-efficient production solution.
Manufacturers seeking to minimize operational costs while maximizing output will find this line purpose-built for their requirements. With output capacities ranging from 4 kg/h (SJ30) to 130 kg/h (SJ65), the system scales from laboratory prototyping and small-batch production through full-scale industrial manufacturing. Every component is manufactured at Zhangjiagang Chenxing Machinery Co., Ltd.'s ISO 9001-certified facility, ensuring CE-compliant quality and long service life.
| Model | Screw Diameter (mm) | L/D Ratio | Screw Speed (rpm) | Output (kg/h) | Drive Power (kW) |
|---|---|---|---|---|---|
| SJ30 | 30 | 25–33 | 17–120 | 4–10 | 2.2–3 |
| SJ35 | 35 | 25–33 | 15–120 | 5–15 | 3–5.5 |
| SJ40 | 40 | 25–33 | 15–110 | 7–25 | 5.5–7.5 |
| SJ45 | 45 | 25–33 | 15–110 | 12–35 | 7.5–11 |
| SJ50 | 50 | 25–33 | 12–100 | 20–50 | 15–22 |
| SJ65 | 65 | 25–33 | 8–90 | 40–130 | 22–45 |
All models in the SJ series feature an optimized 25–33 L/D ratio screw geometry, providing sufficient residence time for complete melting and homogeneous mixing of PU, TPU, and NYLON resins. The screw and barrel are constructed from nitrided/ bimetallic alloy steel, offering extended wear life when processing abrasive or filled compounds. Hardened gearbox components and precision-ground helical gears ensure quiet operation and long-term transmission reliability.
The primary plasticizing unit is a high-speed single-screw extruder equipped with a low-noise centrifugal cooling fan and a high-torque, hardened-gear reducer. The screw design is customized per material type: barrier screws for PU and TPU to ensure gentle shear and prevent thermal degradation, and metering-type screws for PE/PP to maximize throughput. Barrel heating zones use ceramic band heaters with independent PID temperature controllers, maintaining ±1 °C stability across all zones. For operators requiring consistent material feeding, we recommend pairing the extruder with our screw feeder / automatic feeding machine to eliminate manual hopper loading and ensure pulsation-free material intake.
The extrusion die head is fabricated from high-grade alloy tool steel and machined on advanced CNC machining centers to guarantee dimensional accuracy and flow channel uniformity. The spiral mandrel distributor design eliminates weld lines and ensures even melt distribution around the full circumference of the extrudate. Interchangeable die inserts allow rapid changeover between different hose diameters and wall thicknesses without replacing the complete head assembly. The die is compatible with both ether-type and ester-type PU formulations, as well as PE and NYLON grades used in coiled pneumatic hose production.
The vacuum sizing tank is constructed from high-hardness stainless steel plate (SUS304), resistant to corrosion from water and cooling fluids. It integrates an advanced water circulation system with a high-pressure spray cooling array and a vacuum pump with precision vacuum-degree regulation. The water temperature and level are controlled by an automated closed-loop system, maintaining optimal cooling rates for consistent hose roundness and dimensional stability. For facilities requiring additional cooling capacity, Chenxing offers the SML air-cooled chiller and SML water-cooled chiller series, configurable to match line speed and ambient conditions.
The cutting station employs a chipless rotary cutting mechanism that produces clean, burr-free cuts without generating dust or debris — a critical requirement for medical-grade, food-contact, and cleanroom hose applications. The cutter synchronizes with the line speed via an encoder feedback loop, ensuring accurate cut-length repeatability within ±1 mm. Compared to conventional saw-cut systems, the chipless design reduces material waste and eliminates post-cut deburring steps. For operations that also require downstream winding, our pipe coiler / double-station hose coiler provides automatic coil formation with programmable coil length and tension control.
The entire production line is governed by a centralized PLC control system with a color HMI touchscreen interface. Key process parameters — barrel zone temperatures, screw RPM, melt pressure, vacuum level, water temperature, haul-off speed, and cut length — are displayed in real time and can be adjusted from a single operator panel. Recipe storage and recall functions allow instant changeover between different hose specifications, minimizing downtime and operator error. Alarm logs, production counters, and energy consumption monitoring provide valuable data for OEE (Overall Equipment Effectiveness) analysis and preventive maintenance planning.
Six-Model Scalability (SJ30–SJ65): From 4 kg/h laboratory-scale extrusion to 130 kg/h high-volume production, the series scales to match your output requirements with consistent process quality.
Multi-Material Compatibility: Processes PE, PP, PA, FPVC, PU (ether & ester), TPU, PLA, ABS, and NYLON by matching optimized screw and barrel configurations to each resin's rheological characteristics.
High-Precision Die Head with CNC-Machined Flow Channels: Spiral mandrel design ensures uniform wall thickness distribution and eliminates melt fracture at high line speeds.
Closed-Loop Vacuum Sizing with Automated Temperature Control: Maintains dimensional tolerance within ±0.05 mm, critical for 3D filament tubes and automotive fluid lines.
Chipless Dust-Free Cutting: Produces clean, smooth cut surfaces suitable for applications where particulate contamination is unacceptable, complementing our dust-free pipe cutter technology.
Low-Space Footprint, High Throughput: Compact inline layout reduces factory floor space requirements while delivering output comparable to larger-footprint systems.
Energy-Efficient Design: Optimized barrel heating, regenerative motor drives, and intelligent standby modes reduce per-kilogram energy consumption, lowering total cost of ownership.
ISO 9001 & CE Certified Manufacturing: Every extruder, die, tank, and cutter is produced under a certified quality management system with full traceability from raw material inspection to final runoff testing.
Global Installation & Remote Support: Chenxing's engineering team provides on-site commissioning and operator training worldwide, supplemented by remote diagnostics via video call and online guidance.
Understanding the difference between polyether-based and polyester-based polyurethane is essential for selecting the optimal formulation for your target application. This extrusion line processes both types equally well, with simple screw and temperature profile adjustments.
Polyether polyurethane hoses are characterized by outstanding hydrolysis resistance, making them the preferred choice for applications involving continuous water contact or high-humidity environments. They exhibit superior resistance to bacterial and fungal growth, which is critical for gardening hoses, potable water tubing, cleaning equipment hoses, and food-processing transfer lines. Ether-type PU also demonstrates excellent low-temperature flexibility, maintaining elasticity and impact resistance at sub-zero temperatures where other polymers become brittle. Weather resistance and UV stability further extend service life in outdoor installations.
Typical applications: Garden irrigation hoses, pressure washer hoses, water transfer lines, aquaculture tubing, food-grade liquid transfer, outdoor pneumatic tool hoses.
Polyester polyurethane hoses deliver maximum abrasion resistance and mechanical strength among all PU variants. They excel in applications where the hose is subject to constant flexing, dragging across rough surfaces, or exposure to oils, solvents, and hydrocarbon-based fluids. The higher tensile strength and tear resistance of ester-type PU make it the material of choice for hydraulic return lines, fuel transfer hoses, and industrial pneumatic coiled hoses operating in machine shops and automotive service environments. Ester PU also provides excellent resistance to swelling when in contact with mineral oils and grease.
Typical applications: Automotive brake fluid lines, fuel transfer hoses, pneumatic coiled hoses for workshop tools, hydraulic return lines, lubrication system tubing, oil-resistant industrial hoses.
Beyond PU, this extrusion line also accommodates PE (polyethylene) and NYLON (polyamide) spiral hose production. PE spiral hoses offer excellent chemical resistance at a lower raw material cost, suitable for cable protection conduits and general-purpose pneumatic tubing. NYLON spiral hoses provide the highest pressure ratings and temperature resistance, ideal for heavy-duty hydraulic pilot lines and high-pressure pneumatic circuits. For manufacturers exploring PVC flexible hose production, Chenxing also offers dedicated PVC spiral hose extrusion solutions.
This extrusion line produces finished hoses and tubes that serve a diverse range of downstream industries:
| Application Sector | End Products | Recommended Material |
|---|---|---|
| 3D Printing Consumables | Filament guide tubes, Bowden tubes, PTFE-alternative feed tubes | PU, PLA, PA |
| Automotive | Brake fluid lines, fuel transfer hoses, vacuum lines, air suspension tubing | Ester PU, NYLON, PA |
| Pneumatic Tools & Automation | Coiled air hoses, pneumatic control lines, robotic arm cable conduits | PU (ether & ester), PE |
| Hydraulic Systems | Pilot pressure lines, lubrication delivery tubes, return lines | Ester PU, NYLON |
| Gardening & Agriculture | Irrigation drip lines, sprayer hoses, fertilizer delivery tubes | Ether PU, PE |
| Cleaning Equipment | Pressure washer hoses, steam cleaner tubing, detergent feed lines | Ether PU |
| Construction | Concrete spraying hoses, air tool supply lines, dust extraction tubing | Ester PU, NYLON |
| Cable Protection | Spiral cable wrap, wire harness conduits, electrical insulation sleeving | PE, PP |
For manufacturers expanding into rigid pipe products, Chenxing also offers complementary extrusion solutions including reinforced pipe production lines and caterpillar haul-off machines for larger-diameter pipe extrusion.
Selecting the right extrusion partner is a strategic decision that affects product quality, production efficiency, and long-term profitability. Here's why manufacturers worldwide choose Chenxing Machinery:
Turnkey Integration: Unlike suppliers who provide isolated extruders requiring third-party downstream equipment, Chenxing delivers a complete, pre-tested line — extruder, die, vacuum tank, cutter, and control system — with guaranteed compatibility and a single point of service accountability.
Material Expertise: Our engineers have decades of combined experience processing PU, TPU, NYLON, and PE formulations. We provide screw design recommendations, temperature profile guidelines, and startup recipes tailored to your specific resin supplier and grade.
Quality Assurance Infrastructure: Every machine undergoes a comprehensive runoff test at our factory using customer-specified materials before shipment. We provide detailed test reports, video documentation, and accept third-party inspection at any stage of production.
After-Sales Commitment: Chenxing offers a 12-month warranty on all components (excluding normal wear parts) with 6-hour response time for technical inquiries. On-site installation, operator training, and ongoing remote support are standard inclusions — not optional extras.
Vertical Manufacturing Capability: As a factory-direct manufacturer with in-house machining, fabrication, assembly, and electrical engineering teams, we control quality at every production stage and eliminate the markup of intermediary trading companies.
Complementary Product Portfolio: Beyond hose extrusion, Chenxing manufactures plastic crushers, high-speed mixers, PVC hot-cutting pelletizing lines, disc grinding pulverizers, and SMP plastic pulverizers — enabling you to source an entire plastics processing plant from a single trusted supplier.
We accept T/T (telegraphic transfer) and irrevocable L/C at sight. Our standard payment structure is 30% down payment upon order confirmation and contract signing, with the remaining 70% balance payable before shipment. For long-term partnership arrangements or large-scale turnkey projects, we can discuss customized payment schedules. All international transactions are processed through our dedicated export department, ensuring compliance with Chinese export regulations and your country's import documentation requirements. Proforma invoices, packing lists, and bills of lading are provided for customs clearance.
Yes. Chenxing Machinery deploys experienced field service engineers to your factory for on-site installation supervision, mechanical commissioning, electrical integration, and comprehensive operator training. Our engineers remain on-site until your team achieves independent production capability. For regions where travel logistics are challenging, we provide detailed installation manuals, video-guided procedures, and real-time remote support via video call (WeChat, WhatsApp, Zoom). We also welcome your technicians to visit our Zhangjiagang facility for pre-delivery training on your specific machine.
All Chenxing machines carry a 12-month warranty from the date of commissioning or 14 months from the bill of lading date, whichever occurs first. During the warranty period, we supply replacement parts free of charge for any manufacturing defect (excluding consumable wear parts such as heaters, belts, seals, and cutting blades). Our technical support team guarantees a response within 6 hours during Chinese business hours (GMT+8). For critical downtime situations, we can arrange expedited spare parts shipment via international courier (DHL, FedEx, UPS) within 24 hours.
We maintain a comprehensive comprehensive spare parts inventory for all SJ series extruders, die heads, vacuum tanks, and cutters. After the warranty period, we supply parts at cost price plus shipping. We recommend customers maintain a recommended spare parts kit (screw tip assembly, band heaters, seals, bearings, cutting blades, temperature sensors) to minimize downtime. Parts can be ordered via email and are typically dispatched within 3–5 working days. For plastic grinding machines and other auxiliary equipment in your line, the same spare parts policy applies.
Absolutely. We encourage customers to visit our Zhangjiagang manufacturing facility to witness machine assembly, testing, and runoff procedures firsthand. If an in-person visit is not feasible, we provide: (1) live video streaming of your machine during factory acceptance testing; (2) detailed testing reports with process data and quality measurements; (3) high-resolution photos and videos of all key components and test results. We fully accept third-party inspection agencies (SGS, Bureau Veritas, TÜV, etc.) at any stage of production at your direction and expense.
Our standard export packaging protocol: (1) Apply anti-rust treatment to all exposed metallic surfaces; (2) Wrap each machine unit in multiple layers of PE stretch film for moisture protection; (3) Secure each unit onto a fumigated wooden pallet or steel-framed wooden crate with bolted tie-downs; (4) Label all crates with handling instructions, center of gravity marks, and unpacking sequence numbers. For container loading, we optimize crate dimensions to maximize space utilization and minimize freight costs. We can also arrange FOB Shanghai, CIF, or DAP shipping terms based on your preference. In addition to hose extrusion lines, Chenxing ships sheet extrusion lines, SPC floor production lines, and APET sheet lines worldwide using the same packaging standards.
Chenxing Machinery is ISO 9001:2015 certified for quality management systems, and all extrusion line products carry CE certification for the European market. We also support customers in obtaining additional certifications specific to their target markets — including UL, CSA, SASO, and GOST — with engineering documentation and design compliance support. Our in-house QC department performs incoming material inspection, in-process quality checks, and final acceptance testing on every machine before shipment. For twin screw PET sheet lines and PP hollow formwork lines, the same rigorous QC protocols apply.
Step 1 — Define Your Requirements
Tell us your target hose specifications: material (PU ether PU ester TPU NYLON PE), outer diameter range, wall thickness, desired hourly output, and end application. If you already have a sample hose, share its photo and dimensions for our engineers to reference.
Step 2 — Receive a Tailored Proposal
Our engineering team will analyze your requirements and recommend the optimal extruder model (SJ30–SJ65), die configuration, downstream equipment, and auxiliary machinery (such as our vibrating screen for raw material screening or plastic pelletizer for recycling). You will receive a detailed quotation, equipment layout drawing, and production capacity estimate within 2 working days.
Step 3 — Confirm & Commence Production
Upon quotation approval and deposit, we begin manufacturing your line. You will receive weekly progress updates with photos. Before shipment, we conduct a full factory acceptance test — you can attend in person or via live video — to verify output, quality, and specifications.
Step 4 — Installation, Training & Production Ramp-Up
Your machine arrives with complete documentation. Our engineer arrives at your facility for installation, commissioning, and hands-on operator training. We remain engaged until your line achieves stable, continuous production at rated capacity.
Contact Nicole Today:
Phone / WhatsApp: +86 15951187228
Email: ceo@cxsljx.com
Company: Zhangjiagang Chenxing Machinery Co., Ltd.
Website: www.chenxingmachinery.com
