LANGLI PVC Request a Catalog LANGLI PVC Request a Catalog Explore our primary range of heavy-duty, flame-retardant uPVC electrical duct pipes and wireways produced under rigorous ISO 9001 quality controls.
Modern electrical cable duct pipe systems are no longer passive plastic raceways; they are structural components designed to maintain circuit integrity, reduce pulling friction during wire installation, prevent fire propagation, and withstand harsh ambient conditions. As an established manufacturer based in Foshan, China, our uPVC formulations feature optimized resin K-values, non-lead heat stabilizers, and self-extinguishing flame-retardant packages engineered to meet international standards such as BS EN 61386, IEC 61084, and UL94 V-0.
Understanding the technical superiority of unplasticized polyvinyl chloride (uPVC) cable duct pipes over legacy metallic and low-grade flexible conduits.
Our raw material compounding uses virgin PVC resin with a tight K-value distribution (K-67 to K-68). By adding non-toxic Calcium-Zinc (Ca/Zn) thermal stabilizers, impact modifiers, and titanium dioxide (TiO2) UV inhibitors, our cable duct pipes resist yellowing, micro-cracking, and mechanical stress under high thermal cycles.
Safety in high-density electrical risers requires immediate self-extinguishing behavior. Our specialized cable duct pipe material achieves UL94 V-0 and IEC 60695-2-11 glow-wire ratings at 960°C. If an internal electrical short occurs, the duct starves the flame of oxygen, stopping fire spread along vertical wireways.
Equipped with modern dual-strand extrusion lines, we can co-extrude ultra-smooth interior walls. This reduces internal wall friction coefficients by up to 35%, allowing electrical contractors to execute long cable pulls without exceeding maximum wire tension or damaging insulation jackets.
| Technology Generation | Core Material & Innovation | Key Operational Advantage | Primary Target Industry |
|---|---|---|---|
| Gen 1: Standard uPVC | Lead-Stabilized Rigid Polyvinyl Chloride | Basic insulation, economical mechanical protection | Residential & light commercial wiring |
| Gen 2: Heavy-Duty Eco PVC | Calcium-Zinc (Ca/Zn) Eco-Formulation, V-0 Fire Rating | Zero heavy metal leaching, self-extinguishing flame protection | Commercial high-rises, hospitals, public transit |
| Gen 3: LSZH & Bio-Polymer | Low Smoke Zero Halogen (LSZH) & Recycled Matrix Blend | Zero corrosive halogen gases in fires, reduced carbon footprint | Data centers, marine infrastructure, green building projects |
| Gen 4: Smart Embedded Ducting | Co-extruded Conductive Tracing Lines & RFID Micro-tags | Real-time thermal monitoring, underground mapping with sensors | Smart cities, 5G telecom grids, high-voltage power networks |
How our cable duct pipe systems adapt to localized climate zones, regional electrical codes, and severe structural environments.
Hyperscale server environments demand structured power and fiber routing. Our high-density PVC cable ducting and slotted wireways separate power feeders from sensitive Cat6A/fiber data lines, preventing electromagnetic interference (EMI) while allowing easy drop-out maintenance in raised floor systems.
Exposed rooftop solar installations require cable duct pipes capable of enduring harsh UV radiation and severe thermal fluctuation (-15°C to +75°C). Our UV-stabilized heavy-gauge conduit pipes prevent brittleness and degradation under relentless solar exposure, safeguarding DC string cabling.
Where metallic conduits rust or oxidize due to airborne acids, alkalis, or moisture, unplasticized PVC cable ducts offer total corrosion immunity. They provide reliable service in coastal desalination facilities, wastewater treatment plants, and chemical processing facilities.
Situated in Foshan, Shunde—the core of China's advanced polymer manufacturing hub—our production ecosystem delivers fast turnaround, low cost structures, and high batch consistency.
By compounding resin in-house rather than purchasing pre-mixed pellets, we directly control polymer viscosity, flame retardant loadings, and color density. This raw material independence protects buyers from global market resin price surges and ensures uniform mechanical performance.
With over 900 active mold sets and an in-house tooling shop, custom profile tooling lead times are reduced to 30–45 days. Whether you require imperial/metric adapter fittings or regional knock-out patterns, our CAD/CAM tooling department can manufacture according to exact engineer drawings.
Cable duct pipes and trunking bodies consume significant volume. We optimize logistics by telescoping smaller conduit diameters inside larger duct profiles, maximizing container space utilization to reduce ocean freight costs per unit by up to 28%.
Passing stringent import audits across Europe, North America, the Middle East, and Southeast Asia.
| Standard / Certification | Geographic Focus | Testing & Compliance Scope | Our Manufacturing Benchmark |
|---|---|---|---|
| BS EN 61386-21 / 22 | United Kingdom, Middle East, Singapore | Conduit systems for cable management; rigid & flexible compression and impact resistance. | Fully Compliant (Medium & Heavy duty ratings: 750N / 1250N load tests passed) |
| IEC 61084-2-1 | International / Europe / South America | Cable trunking systems and cable ducting systems for electrical installations. | CE & RoHS certified with complete chemical hazardous substance control on file. |
| UL 94 Vertical Burning Test | North America / Global Standard | Flammability of plastic materials for parts in devices and appliances. | Classified V-0 grade; flame ceases within 10 seconds on vertical specimen. |
| ISO 9001:2015 | Global Manufacturing Quality | Overall factory management system, raw material batching, and final inspection. | Audited facility with 100% online optical sensor wall thickness monitoring. |
Every production lot undergoes five mandatory quality gates before container loading: 1) Viscosity & K-value chemical testing of raw resin; 2) Wall thickness dimensional tolerances checked via digital calipers; 3) Low-temperature drop-weight impact testing at -5°C; 4) Glow-wire flame self-extinction testing; and 5) Socket alignment checks with standard conduit couplers.
Browse additional cable duct pipe variants, self-adhesive wireways, and circular junction fittings for wholesale distribution.
Direct answers from our senior engineering team regarding specifications, custom OEM options, and global freight support.
Unplasticized Polyvinyl Chloride (uPVC) contains no plasticizers, resulting in a rigid material with high mechanical strength, high tensile modulus, and superior chemical resistance. Standard flexible PVC contains plasticizing agents that lower thermal tolerance and structural rigidity. Our uPVC cable duct pipes are explicitly engineered for heavy load-bearing raceways, concrete embedment, and vertical electrical risers where structural integrity cannot be compromised.
We manufacture ducting systems tailored to various international standards: BS EN 61386 for conduit fittings across European, British, and Middle Eastern markets (sizes 16mm to 50mm); IEC 61084 for surface wireways and trunking profiles (10x10mm up to 200x100mm); and ASTM / Imperial standards for American market projects. CE and RoHS chemical safety testing certificates are supplied with all export shipments.
Yes. Utilizing 32 injection molding lines and dual-strand extrusion lines, we customize wall thickness, non-standard profile geometries, and specific Pantone / RAL color matching (such as Signal White, Charcoal Grey, or Warning Orange). We also offer laser line marking directly on the duct pipe surface and fully customized, high-strength export cartons bearing your company brand, product barcodes, and local certification logos.
For standard catalog profiles, our minimum order quantity is typically a mixed 20-foot container, allowing you to combine cable duct pipes, trunking bodies, and small junction box fittings in one consignment. Single SKU trial orders start from 20 to 50 cartons. Production lead time is 15 to 25 calendar days after deposit, while custom color compounding or private tooling projects require 25 to 35 days.
Our fire-rated uPVC resin compound is modified with chlorine-heavy polymer backbones and flame retardant additives. It passes the UL94 V-0 test standard, meaning flaming drops are suppressed and self-extinction occurs within 10 seconds of flame source removal. Furthermore, glow-wire tests confirm heat resistance up to 960°C, making our ducting fully compliant with emergency exit stairwell and high-rise riser fire regulations.
Pipes and trunking are bundled using heavy-duty protective PE strapping film, or packed into double-wall corrugated 5-ply export master cartons. For full container load (FCL) shipments, we offer nested loading schemes (nesting smaller pipe diameters inside larger duct profiles), which prevents crushing during long sea voyages while maximizing shipping container efficiency.
Partner directly with an established Chinese factory with over 35 years of polymer manufacturing excellence. Contact our export desk today for landed cost calculations, CBM optimizations, and product catalogs.