LANGLI PVC Request a Catalog LANGLI PVC Request a Catalog Precision-engineered electrical wireways, UPVC trunking profiles, and quick-disconnect fittings manufactured under strict ISO quality control protocols.
Understanding the structural mechanics, material science, and fluidic integrity of demountable unplasticized polyvinyl chloride (PVC-U) joint systems.
An ODM PVC Union serves as an indispensable three-piece mechanical fitting designed to facilitate quick disconnect capability without cutting pipework or conduit runs. Consisting of two end-adaptors (socket or threaded), an internal elastomeric O-ring seal seat (typically EPDM or FKM), and a heavy-duty knurled union nut, the fitting translates rotational torque into uniform axial compression. This creates a hermetic seal rated for working pressures up to PN16 (1.6 MPa / 232 PSI) under DIN 8063 and ASTM D2467 standard specifications.
Foshan Shunde Langli Hardware Electrical PVC Co., Ltd. leverages strict compounding formulations utilizing high-molecular-weight rigid PVC resin (K-value 65-67). The formulation integrates non-toxic calcium-zinc (Ca-Zn) thermal stabilizers, eliminating lead content entirely to meet EU REACH and RoHS regulations. Additives including acrylic impact modifiers and rutile titanium dioxide ($TiO_2$) ensure exceptional resistance to UV radiation, environmental stress cracking, and high-energy chemical corrosion across pH levels from 2 to 12.
Utilizing over 900 sets of in-house tooling molds and 32 computer-controlled injection molding machines, our factory maintains rigorous dimensional tolerances within ±0.05mm. Socket tapers conform strictly to BS 4607, BS EN 61386, and DIN 8061 standards, ensuring seamless interference fit with rigid conduit lines, junction boxes, and cable wireway trunking profiles for rapid solvent cementing or threaded assembly.
Pioneering innovations in polymeric composite science, smart tooling automation, and sustainable manufacturing for industrial piping networks.
As fire safety regulations tighten in high-density public infrastructure (subways, data centers, hospitals), our R&D team is expanding halogen-free thermoplastic options. Advanced flame retardants based on aluminum trihydroxide (ATH) and red phosphorus synergists deliver UL94 V-0 ratings with minimal toxic smoke generation during thermal degradation.
By integrating micro-dispersed carbon nanotubes (CNTs) and nanosilica into unplasticized PVC matrixes, future iterations of our ODM PVC unions will achieve up to 35% higher tensile yield strength (exceeding 65 MPa) and superior flexural modulus, permitting thinner wall profiles without sacrificing structural pressure ratings.
To assist global architectural and MEP engineering firms, Langli offers parametric 3D CAD modeling files (Revit, IFC, STEP) across our complete fitting line. Engineering teams can directly drop exact ODM PVC union dimensions into digital twin simulation software for precise hydraulic head loss and structural interference calculations.
In alignment with circular economy goals, our Foshan factory recycles 100% of in-house sprue and runner material. Regrind resin is re-blended into non-critical outer cable ducting lines under continuous density and viscosity monitoring, minimizing landfill waste to near-zero levels.
Tailored polymeric fitting and containment systems designed for extreme environments across global industrial sectors.
In chemical dosing plants, metal piping suffers rapid galvanic and acid degradation. ODM PVC Unions provide complete dielectric isolation and immunity to aggressive reagents like hydrofluoric acid, sodium hypochlorite, and sulfuric acid solutions. The quick-disconnect union nut enables rapid pump servicing and sensor replacement without dismantling long header lines.
Large-scale commercial towers utilize high-density UPVC cable trunking and conduit unions to protect chilled water controls, BMS sensor wiring, and condensation return runs. Self-extinguishing fire properties prevent flame propagation along vertical riser shafts in compliance with international building safety codes.
Desalination reverse osmosis (RO) skids require high pressure tolerance combined with zero metallic contamination. Langli’s non-toxic, smooth-bore PVC unions prevent bio-film accumulation, scaling, and friction head loss, delivering low total cost of ownership over a 30-year operational lifecycle.
For heavy subterranean power cable encasement, high impact resistance against soil movement and vehicle loads is paramount. Rigid UPVC conduit fittings and junction boxes protect underground splices against moisture ingress (IP65/IP68 compliant sealing), stray currents, and soil-borne alkaline degradation.
Leveraging 35+ years of production heritage, fully automated injection lines, and supply chain resilience in China's plastic manufacturing hub.
Located in Leliu Town, Shunde District, Foshan City — the world's dense plastic injection hub — Foshan Shunde Langli Hardware Electrical PVC Co., Ltd. benefits from immediate upstream access to premium raw resin suppliers, custom masterbatch formulators, and high-precision CNC tooling workshops. This proximity drastically reduces OEM development cycles.
Our 20,000+ sqm automated facility operates 32 advanced injection molding machines equipped with servo-driven robotic arm demolding systems. Automated central material conveying feeds compound continuously, minimizing human contamination, reducing energy consumption by 25%, and guaranteeing uniform wall density across all SKUs.
Every production batch undergoes mandatory lab testing: Vicat softening temperature analysis (ISO 306), low-temperature drop-weight impact resistance (-5°C), glow-wire flammability verification (650°C to 850°C per IEC 60695), and hydrostatic burst pressure validation. Shipments include full Factory Acceptance Test (FAT) certificates.
Seamless customs clearance and regional code compliance for distributors across Europe, the Middle East, Southeast Asia, and the Americas.
We tool fittings and trunking profiles to strictly match major international electrical standards: British Standard BS 4607 / BS EN 61386 (20mm to 50mm sizes), European DIN series (16mm to 50mm), and ASTM imperial standards (1/2" to 2" NPT thread options). This guarantees immediate compatibility with local electrical conduit installations.
Langli’s complete product catalog is supported by authentic CE conformity documentation and SGS/TÜV RoHS 2.0 heavy metal test reports. Our materials contain zero polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), lead, mercury, or cadmium, ensuring smooth green-channel clearance at European and North American customs ports.
Distributors can request custom laser-etched or ink-jet logos directly on fitting bodies, custom Pantone color matching (white, grey, black, ivory, wood-grain), and fully printed private-label export master cartons featuring localized barcodes, SKU numbers, and multi-language specification labels.
Optimizing procurement efficiency, minimizing landed logistics costs, and guaranteeing supply continuity for tier-1 distributors.
Initial unit cost represents only a fraction of total procurement expense. By engineering high-precision socket fits that reduce installation labor times by up to 20%, and utilizing intelligent container nest-packing algorithms (achieving up to 98.5% CBM volumetric utilization), Langli dramatically lowers your landed cost per unit.
Global supply chain volatile lead times can paralyze installation sites. We maintain raw polymer resin reserves, hold safety stock for strategic OEM partners, and offer standard 15–25 day order fulfillment schedules from Foshan port hubs (Guangzhou / Shenzhen / Hong Kong gateways).
Need a proprietary fitting design or modified socket dimension? Our integrated tool shop delivers 3D rapid prototype samples within 7 business days, with complete multi-cavity injection mold fabrication finalized within 25–35 days, accelerating your time-to-market.
Comprehensive physical, thermal, and electrical property comparison for Langli ODM PVC Unions and conduit fittings.
| Physical / Technical Property | Test Standard | Standard PVC Fitting | Langli High-Impact ODM PVC | CPVC Industrial Grade |
|---|---|---|---|---|
| Specific Gravity / Density | ISO 1183 / ASTM D792 | 1.38 - 1.42 g/cm³ | 1.40 - 1.43 g/cm³ | 1.50 - 1.55 g/cm³ |
| Tensile Strength at Yield (23°C) | ISO 527 / ASTM D638 | 42 - 48 MPa | 52 - 58 MPa | 55 - 62 MPa |
| Flexural Modulus | ISO 178 / ASTM D790 | 2,600 MPa | 3,100 MPa | 3,400 MPa |
| Izod Impact Strength (Notched, 23°C) | ISO 180 / ASTM D256 | 4.5 kJ/m² | 9.8 kJ/m² (High Toughness) | 7.5 kJ/m² |
| Vicat Softening Temperature | ISO 306 (B50) | 78°C | 84°C - 88°C | 103°C - 110°C |
| Dielectric Strength | IEC 60243-1 | 25 kV/mm | > 35 kV/mm (Insulated) | 30 kV/mm |
| Flame Retardancy Rating | UL94 / EN 60695 | V-2 / Self-extinguishing | V-0 Grade / 850°C Glow Wire | V-0 / Low Smoke |
| Working Pressure (Demountable Union) | DIN 8063 / ASTM D2467 | PN10 (1.0 MPa) | PN16 (1.6 MPa / 232 PSI) | PN25 (2.5 MPa) |
Explore our extended catalog of high-quality electrical conduit circular boxes, wiring ducts, and flameproof surface fittings.
Detailed technical, regulatory, and logistics answers direct from our engineering desk.