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Product Description
The PVC steel wire reinforced hose production line by Chenxing Machinery produces transparent PVC hoses with an embedded spiral steel wire skeleton, covering diameters from Φ12 mm to Φ150 mm across four extruder configurations (SJ-45 through SJ-120). This hose type is the industry workhorse for demanding fluid and gas transfer — chemical plants moving corrosive media, construction sites pumping sludge, vacuum systems handling heavy suction, and agricultural irrigation networks that require kink resistance under pressure. What makes this line distinctive is the integration of a specialized steel wire winding machine that synchronizes wire feed pitch with extrusion speed, producing hoses where the wire is embedded precisely at the inner wall with uniform distribution — a parameter that directly determines burst pressure rating and service life.
Unlike generic hose lines that treat the winding station as an afterthought, this system unifies extrusion, wire forming, cooling, and cutting under a single synchronization architecture. The result: continuous production runs measured in days rather than hours, with wire pitch variation held within ±0.5 mm. For manufacturers supplying the chemical, construction, and agricultural sectors where hose failure means downtime or safety incidents, this consistency translates directly to end-user trust and repeat orders.
| Model | Extruder | Diameter Range (mm) | Output (kg/hr) | Installed Power (kW) |
|---|
| SJ-45 | SJ45/28 | Φ12–Φ20 | 20–40 | 30 |
| SJ-65 | SJ65/30 | Φ20–Φ50 | 40–75 | 40 |
| SJ-90 | SJ90/30 | Φ50–Φ110 | 70–130 | 50 |
| SJ-120 | SJ120/30 | Φ75–Φ150 | 100–150 | 75 |
The SJ series single-screw extruders (L/D ratios of 28:1 and 30:1) are purpose-configured for transparent PVC compound. The screw features a gradual compression ratio of 2.5:1 to 2.8:1 with a chromium-plated metering zone (Ra ≤ 0.2 μm) that eliminates material stagnation. Barrel heating uses four independent PID-controlled ceramic band zones spanning 150°C–185°C, each maintaining ±1°C precision. This temperature control is not just about throughput — it is the difference between a hose that sells at premium transparency and one that shows amber thermal degradation streaks that buyers reject on sight. For customers running recycled PVC content, the screw can be specified with a vented degassing section to extract volatiles before they create bubbles in the transparent wall.
The wire winding unit is the intellectual core of this line. A servo-driven coil pay-off system feeds galvanized spring steel wire (typically Φ0.8–Φ3.0 mm depending on hose diameter) into a rotating forming head synchronized with the extrusion haul-off speed via encoder feedback. Wire pitch — the key determinant of hose collapse resistance — is programmable from 3 mm to 25 mm through the HMI, with the servo maintaining pitch consistency at ±0.5 mm even during extruder speed ramps. The winding mandrel is temperature-controlled (40°C–60°C) to prevent premature PVC cooling before the wire bonds into the inner wall, a detail that separates integrated lines from retrofitted setups where wire adhesion is the most common warranty claim.
The co-extrusion die head incorporates a dual-flow channel design: an outer channel for the transparent PVC wall and an inner channel guiding the pre-formed steel spiral into position before the melt envelopes it. The chrome-plated flow paths (Ra ≤ 0.1 μm) and precision land-length calibration ensure the finished hose wall exhibits uniform thickness (eccentricity ≤ 0.05 mm) and optical clarity — no cloudiness, no flow lines. A key advantage: the die head is designed for rapid disassembly (under 20 minutes) for color or compound changes, unlike welded single-body dies that require overnight cooling before cleaning. The visible steel wire through the transparent wall serves as both a quality indicator and a product differentiator on the shelf — buyers equate wire uniformity with hose quality at a glance.
The entire line — extruder screw RPM, wire winding servo, haul-off belt speed, and cutter stroke — is governed by a PLC-based synchronization controller with a 7-inch color touchscreen. The operator sets the target hose OD, wall thickness, and wire pitch; the PLC calculates and maintains all drive ratios automatically. A digital meter counter with photoelectric sensor triggers the automatic flying cutter at the preset length (adjustable from 1 m to 100 m per coil or straight length). Length repeatability is ±2 mm per cut, eliminating material waste from over-length allowances that accumulate over thousands of cuts per shift.
All four models use IE2/IE3 efficiency-class motors with VFD control, keeping specific energy consumption at 0.75–1.0 kWh/kg of finished hose — competitive for transparent PVC processing where lower processing temperatures already reduce thermal load. The SJ-45 model (30 kW total) fits within a 15 m × 3 m footprint, making it accessible for small-to-medium workshops entering the reinforced hose market. The line ships as pre-wired modules with quick-connect electrical interfaces, reducing on-site installation to 3–5 working days when following Chenxing's installation guide.
The line integrates five sequential stages into a continuous production flow:
PVC Compound Feeding — Transparent PVC granules (with plasticizer, stabilizer, and processing aids) are fed via hopper loader into the single-screw extruder. For color-tinted hoses, masterbatch dosing at 1–2% is metered by a volumetric feeder mounted on the throat.
Plasticizing & Melt Homogenization — Material progresses through four barrel zones (150°C → 165°C → 175°C → 185°C), reaching full gelation with melt temperature at 180°C–190°C at the die entry. The chrome-plated screw ensures no material degradation that would cause yellowing.
Wire Forming & Co-Extrusion — Galvanized steel wire is fed from the pay-off spool through tension rollers into the rotating forming head. As the formed spiral enters the die, the transparent PVC melt encapsulates it, creating a hose where wire is embedded in the inner wall — visible, but not exposed, for smooth fluid flow.
Calibration & Cooling — The hot hose passes through a vacuum calibration sleeve that sets the outer diameter, followed by a spray cooling trough (water temperature 15°C–25°C) that progressively solidifies the wall. Cooling rate is critical: too fast and the PVC hazes; too slow and the wire may shift before the wall sets.
Haul-Off, Cutting & Coiling — Caterpillar belts pull the cooled hose at a precisely controlled speed. The flying cutter trims at the preset length, and an optional automatic coiling unit winds finished hoses onto reels or into coils ready for packaging. For bulk orders, visit our products page for complementary packaging and labeling solutions.
| Application Sector | Typical Hose Size | Key Performance Requirement | End-User Industry |
|---|
| Chemical Transfer | Φ12–Φ50 mm | Corrosion resistance, anti-static | Chemical plants, laboratories |
| Combustible Gas Conveying | Φ20–Φ75 mm | Anti-static, high pressure rating | LPG distribution, welding supply |
| Heavy Suction & Sludge | Φ50–Φ150 mm | Collapse resistance, abrasion resistance | Construction, mining, dredging |
| Vacuum Pump Systems | Φ12–Φ50 mm | Vacuum rating, kink resistance | Packaging, woodworking, medical |
| Agricultural Irrigation | Φ20–Φ110 mm | UV resistance, flexibility, crush resistance | Farming, landscaping, aquaculture |
| Building Water Supply/Drainage | Φ20–Φ75 mm | Pressure rating, freeze-thaw durability | Residential, commercial construction |
For manufacturers serving multiple end-user segments, the line's rapid die-change capability (under 30 minutes for diameter changes) enables flexible batch production without dedicating separate lines. Stay updated on market trends through our news page.
| Your Production Goal | Recommended Model | Why |
|---|
| Entry into small-bore chemical/vacuum hose market (Φ12–Φ20 mm) | SJ-45 | Lowest investment (30 kW), compact footprint, ideal for pilot production and niche high-margin hoses |
| Mid-range general-purpose hoses (Φ20–Φ50 mm) for gas, irrigation, construction | SJ-65 | Broadest market coverage at 40–75 kg/hr, covers the most common hose sizes on distributor price lists |
| High-volume medium-bore production (Φ50–Φ110 mm) for construction and agriculture | SJ-90 | 70–130 kg/hr output with 50 kW installed power delivers best cost-per-kg for the mid-diameter segment |
| Large-bore industrial hoses (Φ75–Φ150 mm) for heavy suction and sludge | SJ-120 | Maximum diameter and throughput for high-value industrial hoses with thick walls and heavy-gauge wire |
All four models share the same core technology platform — die head architecture, wire winding servo control, and PLC synchronization — so operators trained on one model can transition to another within a single shift. This standardization also means spare parts interchangeability across models, reducing inventory costs for multi-line factories.
You have four production windows: Φ12–Φ20 mm (SJ-45), Φ20–Φ50 mm (SJ-65), Φ50–Φ110 mm (SJ-90), and Φ75–Φ150 mm (SJ-120). Each model covers its advertised range with the included die set; switching between diameters within range takes under 30 minutes — change the calibration sleeve, adjust wire pitch on the HMI, and load the new recipe. No mechanical disassembly of the winding head is needed for diameter changes. What this means for you: you can accept mixed-size orders from distributors without dedicating a separate line to each SKU, keeping machine utilization high.
MOQ is 1 set per model. Each line is built to your specification — diameter range, wire gauge preference, voltage/frequency, and optional coiling unit. No minimum annual commitment. This matters because you are not forced to over-invest in capacity you have not yet sold; start with one SJ-65 covering Φ20–Φ50 mm (the highest-demand segment) and add an SJ-90 when your order book justifies it.
All lines carry CE certification (Machinery Directive 2006/42/EC) and are manufactured under ISO 9001:2015. The resulting hoses can be tested to ISO 3994 (plastics hoses — helical-thermoplastic-reinforced), ISO 1307 (rubber and plastics hoses — bore diameters), and EN 13765 (thermoplastic multi-layer hoses for hydrocarbon transfer). Electrical installations comply with IEC 60204-1. For specific national standards (SASO, SNI, SANS), we provide the technical documentation package needed by your local certification body.
Standard delivery is 45–55 working days from deposit. Installation and commissioning take 5–7 working days with our remote video guidance; on-site support is available at USD 200/day. Realistically, you can be producing sellable hose within 60–70 working days of placing your order. We have helped 700+ factories shorten their time-to-revenue; ask about our PET recycling line customers who achieved payback in 14 months.
You are not locked into any supplier. The line accepts standard transparent PVC compounds (K-value 65–70, Shore A 70–80) from any reputable producer. Galvanized spring steel wire to GB/T 4357 or equivalent is accepted — we only recommend minimum tensile strength ≥ 1,570 MPa to ensure burst pressure ratings. The PLC recipe system stores up to 30 material profiles with unique temperature curves and screw speed parameters, so switching between local and imported compounds is a one-tap operation, not a trial-and-error exercise.
24-month warranty on gearbox, motor, PLC, VFDs, and electrical cabinet; 12 months on wear items (screw, barrel, die head, cutter blades, haul-off pads). Warranty claims are handled via video call diagnosis within 48 hours; replacement parts ship by DHL Express at our cost. But here is what matters more: we pre-install a remote-access module in the PLC so our engineers can log in and diagnose problems directly — often resolving parameter or calibration issues within 30 minutes without waiting for parts. Spare parts depots in Egypt, Nigeria, Vietnam, and India stock commonly requested wear items for same-week delivery in these regions.
Line pricing ranges from approximately USD 28,000 to USD 95,000 FOB Shanghai, depending on model and optional equipment (automatic coiler, spare die sets, thicker-gauge wire winding head). A full quotation with itemized BOM and 2D factory layout drawing is provided within 3 working days. What this range does not tell you: the payback math. At 40 kg/hr (SJ-65), running 20 hours/day, 300 days/year, you produce 240 tonnes/year. At a conservative margin of USD 400/tonne over raw material cost, that is USD 96,000 in annual gross margin — against a machine cost of roughly USD 45,000. Discuss your numbers with us at ceo@cxsljx.com.
SJ-45: 15 m × 3 m, ceiling 3.5 m, 30 kW
SJ-65: 20 m × 4 m, ceiling 3.5 m, 40 kW
SJ-90: 25 m × 5 m, ceiling 4 m, 50 kW
SJ-120: 30 m × 6 m, ceiling 4.5 m, 75 kW
Utilities: 380V/50Hz 3-phase (customizable), compressed air 0.6 MPa (1.0 m³/min), cooling water recirculation at 5–8 m³/hr. A standard industrial floor with 200 mm concrete is adequate — no special foundation. This is intentionally designed so you can place the line in an existing workshop without civil works, keeping your upfront costs contained.
If you are starting out, the SJ-65 covering Φ20–Φ50 mm is the ROI sweet spot. It produces the diameters with the highest unit sales volume in hardware distribution — every hardware store stocks 25 mm and 32 mm reinforced hose. The 40–75 kg/hr output fills a 20-foot container order in roughly 8–10 production days. If you already have contracts for construction or mining hoses (Φ75 mm+), the SJ-90 or SJ-120 becomes the better choice because larger diameters command higher per-meter prices and margin percentages.
The line includes inline quality monitoring: melt pressure transducer (0–40 MPa), per-zone temperature display with deviation alarms, and a digital OD gauge at the haul-off. For formal QC, we recommend adding: a burst pressure tester (0–10 MPa range, for ISO 1402 compliance), a vacuum collapse tester, and a tensile testing machine for wire adhesion pull-out testing. We supply all QC equipment as a bundled package. The real quality advantage: the wire winding servo logs pitch data to USB, so you have per-batch traceability — if a customer claims a hose failed, you can verify whether the wire pitch on that production batch was within specification.
Yes. The standard line produces transparent hoses with masterbatch coloring (1–2% dosing). For opaque or dual-color hoses, we offer a co-extrusion upgrade that adds a second small extruder (SJ25/25) for a colored outer layer while keeping the inner layer transparent or tinted. For anti-static hoses (surface resistivity ≤ 10⁶ Ω), a conductive compound outer layer can be co-extruded. These are optional upgrades with full PLC integration — your operator controls both layers from the same touchscreen.
Absolutely not. You receive: (a) Remote video-guided installation covering mechanical assembly, wiring, and PLC commissioning — standard with every line; (b) First production batch supervision — we stay connected until you produce specification-grade hose; (c) Lifetime technical support via WhatsApp/WeChat/email at ceo@cxsljx.com with 24-hour response; (d) On-site engineer dispatch (USD 200/day, you cover airfare and accommodation) for hands-on training and process optimization; (e) Spare parts express shipping from regional depots. The goal: your operators should be independent within 2 weeks of commissioning, but our engineers are a message away for the life of the machine.
Integrated winding know-how — the wire winding station is not a bolt-on from a third-party supplier; it is designed, manufactured, and calibrated in-house as part of the complete line, with 18 years of pitch consistency data across 40+ wire gauges and diameters.
Real transparency — every machine ships with a serial-numbered FAT report including photographic documentation of your hose specification being trial-produced before crating. No stock photos, no generic certificates.
Proven in the markets that matter — 700+ extrusion lines operating in chemical, construction, and agricultural hubs across Southeast Asia, the Middle East, Africa, and South America where reinforced PVC hose is a high-turnover commodity.
Pre-order engineering clarity — receive a dimensioned factory layout drawing with all utility connection points, material flow paths, and recommended operator positions before you commit, so there are no surprises during installation.
Ready to manufacture transparent steel-wire-reinforced PVC hose?
Step 1 — Tell Us Your Target Market: Email ceo@cxsljx.com with your desired hose diameter range (mm), target output (kg/hr), and which end-user industries you plan to serve (chemical, construction, agriculture, etc.). Response within 24 hours.
Step 2 — Review Your Custom Proposal: Within 3 working days, you receive a tailored quotation with itemized BOM, dimensioned factory layout drawing, wire winding specification sheet, and project timeline — all specific to your configuration.
Step 3 — Witness Your Hose Being Made: Before shipment, we run a live production trial of your exact hose specification using your material formulation (or our recommended compound) and share full video documentation. You or your third-party inspector are welcome at our Zhangjiagang facility.
Step 4 — Launch Production with Our Engineers: Our team guides your crew through installation via real-time video, commissions the PLC and all servo drives, and supervises the first full production batch to ensure hoses meet your specified burst pressure, transparency, and dimensional requirements.
Contact us now: ceo@cxsljx.com | +86 159 5118 7228 | Chenxing Machinery
