LANGLI PVC Request a Catalog LANGLI PVC Request a Catalog Explore our primary range of rigid PVC conduits, trunking channels, and custom wireways manufactured to international electrical standards.
Modern electrical infrastructure demands zero-compromise cable protection systems. Operating from our state-of-the-art manufacturing hub in Foshan Shunde, China, our enterprise combines over 35 years of polymer engineering expertise with precision injection moulding and profile extrusion technology.
Equipped with an internal CNC toolroom, we design, prototype, and manufacture custom conduit dimensions, wall thicknesses, and snap-on fittings tailored precisely to regional installation standards (BS, DIN, ASTM, AS/NZS).
Utilizing high-grade Unplasticized Polyvinyl Chloride (PVC-U) virgin resins combined with UV stabilizers and halogen-free fire retardants, our conduits achieve V-0 flame rating under UL 94 standards and exhibit extreme mechanical impact strength.
Every extrusion batch undergoes rigorous quality control tests including dielectric voltage breakdown resistance, low-temperature impact testing (-15°C), cold bending tolerance, and Vicat softening temperature analysis.
Sourcing directly from an established Foshan conduit pipe manufacturer delivers profound commercial and technical advantages for global EPC contractors, electrical wholesalers, and private-label brand owners.
Located in Foshan Shunde, the world's dense polymer fabrication cluster, our facility benefits from immediate access to premium PVC compounds, masterbatches, custom packaging suppliers, and rapid tool-steel procurement.
By pairing high-speed multi-cavity extrusion with automated box packing, we minimize per-meter manufacturing costs while preserving strict physical wall-thickness tolerances (+/- 0.1mm), reducing project material expenditures by up to 28%.
Our logistics team specializes in nesting varied conduit sizes (e.g., placing 16mm pipes inside 25mm pipes) and combining trunking channels with box fittings inside a single 40ft HQ container, maximizing volumetric freight efficiency.
Our rigid PVC conduit pipes, cable trunking systems, and junction boxes are fully documented for submittal approval across global municipal, commercial, and utility tenders.
| Product Family | Standard Dimension Range | Compliance / Standard | Impact / Temp Rating | Fire Retardancy Rating | Primary Global Application |
|---|---|---|---|---|---|
| Rigid Conduit Pipe (Heavy Gauge) | 16mm, 20mm, 25mm, 32mm, 40mm, 50mm | BS EN 61386-21 / BS 4607 | Heavy Duty (4 Joules at -15°C) | Self-Extinguishing, UL 94 V-0 | Surface & Concealed Commercial Wiring |
| Flexible PVC Corrugated Conduit | 16mm to 50mm Outer Diameter | IEC 61386-22 / CE Approved | Medium Duty (2 Joules) | Glow Wire Test 960°C | Machinery Wiring, Drywall, False Ceilings |
| Electrical Cable PVC Trunking | 10x10mm up to 200x100mm Body | BS 4678 Part 4 / RoHS Compliant | IK07 Impact Resistance | VO Flammability, Non-Flame Propagating | Surface Cable Routing & Office Fit-outs |
| Circular Junction & Switch Boxes | 1-Way to 4-Way, 65mm / 85mm Depth | BS 4607 / DIN 49073 | High Structural Compression Strength | Self-Extinguishing within 30s | Conduit Intersection & Light Fitting Points |
| Imperial / Schedule 40 Conduit | 1/2 Inch to 2 Inch Nominal Pipe Size | ASTM D1785 / UL 651 Standard | Sunlight / UV Resistant Grade | V-0 Rated Flame Retardant | Americas & Middle East Infrastructure |
Different markets present unique atmospheric, regulatory, and mechanical challenges. Our customizable formulations guarantee long-term field stability in any deployment environment.
High ambient temperatures and extreme UV exposure cause standard PVC raceways to yellow and embrittle. We incorporate titanium dioxide (TiO2) and specialized light stabilizers to retain high impact resistance and color stability under desert UV indexes exceeding 11+.
Full compliance with BS EN 61386 conduit dimensions ensures seamless slip-fit compatibility with standard brass bush adaptors, inspection elbows, and spring benders. RoHS and REACH compliance reports are maintained on file for smooth customs clearance.
In metro stations, hospitals, and educational facilities, smoke toxicity is a primary life-safety concern. Our custom Low Smoke Zero Halogen (LSZH) and halogen-free polymer variants eliminate toxic acid gas generation during fire events.
As global building codes tighten and sustainability mandates expand, electrical raceway systems are evolving beyond traditional PVC extrusions.
Transitioning toward calcium-zinc (Ca-Zn) eco-stabilizers and integrating post-industrial recycled PVC cores with virgin outer skin layers, reducing environmental carbon footprint while maintaining 100% mechanical integrity.
Increasing labor costs are accelerating demand for self-adhesive mini-trunking profiles, push-fit conduit couplers, and snap-together fittings that eliminate solvent welding and reduce field installation time by over 40%.
Expansion of solar PV farms and hyperscale data centers requires specialized conduits capable of resisting continuous high-voltage DC electromagnetic fields, severe UV exposure, and high chemical resistance against soil degradation.
Direct answers from our engineering desk to clarify technical parameters, OEM customization options, and international shipping protocols.
Our tooling and extrusion dies are engineered to comply with British Standard (BS 4607 / BS EN 61386-21) for metric conduits (20mm, 25mm, 32mm, 40mm, 50mm), European DIN standards (16mm-50mm), and ASTM D1785 / UL 651 for imperial Schedule 40/80 dimensions (1/2" through 2"). Trunking profiles range from 10x10mm mini-trunking to 200x100mm industrial wireways certified under BS 4678 Part 4.
For standard white/grey catalogue items, the baseline MOQ is typically a mixed 20-foot container (approx. 25-28 CBM), allowing buyers to consolidate conduits, trunking profiles, and box fittings into one shipment. Single-item trial orders can be accepted from 20 to 50 master cartons per SKU. Standard factory lead times are 15 to 20 days upon deposit approval, extending to 25–30 days for customized Pantone color compounding or specialized printed cartons.
Yes. Over 90% of our output is produced under private-label agreements. We offer continuous inline laser-marking or ink-jet printing along the conduit body, custom Pantone-matched PVC compounding (white, ivory, grey, orange, black, blue), and fully branded master cartons carrying your specific barcoding, part numbers, and company artwork.
Every raw material batch undergoes resin density and moisture verification. Extruded profile samples are subjected to automated wall-thickness ultrasonic measurement, low-temperature drop-hammer impact testing (-15°C for 2 hours without cracking), 180° cold-bending trials using internal bending springs, glow-wire flammability testing (960°C), and dielectric strength voltage testing exceeding 2,000V.
Absolutely. Our molded conduit couplers, elbows, and circular junction boxes maintain tight female socket tolerances (+0.1mm / -0.0mm) designed for rapid chemical solvent welding using PVC-U cement, creating IP65 water-tight junctions. Threaded adaptors feature precision-molded male/female threads compatible with standard electrical locknuts and switch box knockouts.
We provide comprehensive technical submittal packages including Mill Test Certificates (MTC), CE Conformity Certificates, RoHS 2.0 Material Safety Data Reports, ISO 9001 quality management certificates, and independent third-party test reports (SGS, Intertek, or TÜV) confirming flammability ratings and tensile strength.
Complete your sourcing list with our secondary collection of custom PVC cable ducts, air-conditioning wireways, and high-durability trunking options.
Send us your project drawings, target dimension standards, or custom color requirements. Our engineering team provides detailed quotations, CBM container packing calculations, and sample dispatch within 24 hours.