LANGLI PVC Request a Catalog LANGLI PVC Request a Catalog Explore our top-performing rigid PVC cable trunking, circular cross junction boxes, and wiring duct systems manufactured under ISO 9001 and certified for international deployment.
In contemporary industrial, commercial, and residential electrical installations, the structural integrity of conduit distribution systems relies heavily on junction hubs. Among these, the PVC Cross Box (frequently designated as a circular 4-way conduit box) serves as an essential intersection hub where multi-directional wiring conduits converge. Designed to accommodate four orthogonal entryways, the cross box allows electrical engineers and contractors to manage complex routing topologies while protecting conductors from physical degradation, moisture ingress, and thermal fluctuations.
As a leading ODM PVC Cross Box Manufacturer & Factory based in Foshan, China, Foshan Shunde Langli Hardware Electrical PVC Co., Ltd. (established in 1989) has spearheaded engineering advancements in unplasticized polyvinyl chloride (PVC-U) formulations. By optimizing molecular cross-linking, resin purity, and stabilizer chemistry, high-performance cross boxes provide significant operational benefits over metal alternatives, including total immunity to electrochemical corrosion, enhanced dielectric insulation, and significantly lower structural weight.
The manufacturing process of industrial-grade PVC cross boxes utilizes specialized virgin PVC-U resin combined with non-toxic calcium-zinc (Ca-Zn) heat stabilizers, impact modifiers, and titanium dioxide (TiO2) for UV resistance. This precise chemical synthesis ensures compliance with rigorous international performance criteria:
Why Tier-1 EPC contractors and global electrical distributors select our Foshan factory for ODM/OEM PVC conduit fittings and cross boxes.
Molded with 0.05mm dimensional accuracy using state-of-the-art CNC injection tools. Ensures rapid, push-fit assembly and seamless solvent welding with 16mm, 20mm, 25mm, and 32mm rigid conduits.
Our fully equipped tool room enables rapid custom mold modifications. We support ODM modifications for knock-out locations, box depth extensions, brass thread insert integration, and dual-color branding.
Engineered to meet British Standard (BS 4607 / BS EN 61386), European Metric (DIN 49020), North American (UL 651), and Australian (AS/NZS 2053) dimensional parameters without field modification.
Global procurement teams in the electrical infrastructure sector face supply chain bottlenecks, regulatory friction, and material inconsistency. Sourcing directly from an integrated China manufacturer offers distinct strategic advantages when evaluating Total Cost of Ownership (TCO) and risk mitigation.
Foshan Shunde Langli operates direct raw material compounding facilities adjacent to our injection molding workshop. By purchasing high-grade resin directly from petrochemical refiners and blending custom formulations in-house, we eliminate intermediate compounder margins, maintain absolute chemical traceability, and guarantee lot-to-lot color consistency (available in High-White, Off-White, Charcoal Grey, and Jet Black).
With 32 high-speed fully automated injection molding machines operating around the clock, our facility processes over 1,500 metric tons of rigid PVC monthly. Automated robotic pick-and-place arms eliminate human contamination, maintain uniform cycle times, and minimize flash or burrs on internal conduit stops—ensuring wire insulation remains unmarred during pulling operations.
One of the key hurdles for overseas importers is shipping empty volumetric space. Langli provides complete product range integration. Importers can combine PVC cross boxes, 1-way to 3-way circular junction boxes, surface switch boxes, light/heavy gauge rigid conduit pipes, and mini-trunking profiles (10x10mm up to 200x100mm) into a single 20ft or 40ft HQ container. Our export team utilizes automated CAD loading software to maximize cubic meter utilization, reducing freight costs per unit.
| Parameter | Standard Metric Cross Box | Heavy Duty IP66 Cross Box | Custom ODM Variation |
|---|---|---|---|
| Conduit Entry Sizes | 16mm, 20mm, 25mm, 32mm | 20mm, 25mm (Threaded / Smooth) | Custom Imperial (½", ¾", 1") |
| Material Grade | Rigid PVC-U (Unplasticized) | UV-Stabilized PVC-U + Silicone Gasket | LSZH (Low Smoke Zero Halogen) PVC |
| Flammability Rating | UL 94 V-0 / Self-Extinguishing | UL 94 V-0 / Self-Extinguishing | Custom Flame-Retardant Grade |
| IP Protection Rating | IP50 (Standard Dust Proof) | IP65 - IP66 Waterproof / Dustproof | Engineered per Tender Specification |
| Lid Fixing Mechanism | Snap-On or Self-Tapping Screws | M4 Brass Insert Pillars with SUS Screws | Tamper-Proof Security Screws |
| Temperature Range | -15°C to +60°C | -25°C to +75°C | Extreme Cold / High Heat Modified |
Navigating regional electrical codes with verified laboratory testing reports, product markings, and standardized packaging.
Standards: BS 4607 Part 5, BS EN 61386-21
Designed with standard 50.8mm fixing centers for ceiling roses and accessory plates. Features deep internal clearance for cable loop-in connections and standardized M4 brass inserts to support heavy pendant fixtures.
Standards: CE, RoHS, REACH, IEC 61386
Fully compliant with EU Hazardous Substance Directives. Molded in metric outer diameters (16mm to 50mm) with precise wall thickness ratios matching EN conduit profiles. Halogen-free testing verified.
Standards: SASO 2547, G-Mark, Gulf Technical Regulation
Formulated with enhanced titanium dioxide UV stabilizers to endure high solar irradiance and extreme ambient temperatures exceeding +50°C without discoloration or thermal warpage.
The operational versatility of rigid PVC cross boxes allows deployment across diverse environmental conditions and complex architectural frameworks:
In modern commercial high-rises, floor-slab conduit systems require intersection hubs every 10 to 15 meters to reduce wire-pulling tension. The smooth internal bore and radiused entry ports of our cross boxes prevent wire insulation stripping during conductor pull-through. Integrated loop-in capability provides a secure enclosure for branching network cables and lighting circuits.
In chemical processing plants, fertilizer factories, and coastal marine environments where metallic electrical enclosures suffer from rapid galvanic and atmospheric corrosion, our non-metallic PVC-U cross boxes provide immunity against acid, alkali, and saline atmospheric exposure, extending system lifespan while significantly reducing maintenance expenditure.
Solar raceway installations demand junction enclosures that endure decades of direct sunlight, rainwater accumulation, and extreme thermal cycling. Our IP65/IP66 weather-proof PVC cross boxes feature elastomeric silicone gaskets and UV-stabilized resins, preventing water ingress and protecting low-voltage solar string cabling from insulation breakdown.
As global construction standards move toward higher sustainability ratings (LEED, BREEAM) and enhanced life-safety codes, the electrical containment manufacturing sector is undergoing key structural transformations:
Detailed answers regarding custom mold engineering, minimum order quantities, compliance documentation, and export logistics.
Our ODM development process follows four precise steps: 1) CAD/3D Modeling & Stress Simulation (3-5 days); 2) 3D Prototype Printing for physical fit validation (2-3 days); 3) Precision Tooling & CNC Machining of the hardened steel mold (20-25 days); and 4) Initial Sample Production & T1 Testing Report (3 days). Overall, custom ODM mold tooling requires 30 to 35 calendar days from drawing approval to final pre-production sample confirmation.
Our standard export compound is engineered with specialized impact modifiers and thermal stabilizers. Under sub-zero conditions (-15°C), the material retains impact resistance surpassing BS EN 61386 requirements. For high-temperature zones like the Middle East or tropical regions, the Vicat Softening Point exceeds +82°C, preventing sagging, socket deformation, or discoloration under direct sunlight exposure.
Yes. Over 95% of our export shipments are mixed-item full container loads (FCL). Importers regularly combine high-volume fast-moving items (such as 20mm and 25mm circular cross boxes, elbows, and couplers) with lower-volume large-profile trunking or electrical switch boxes. This approach optimizes container volume, balances inventory turnover, and minimizes freight costs per SKU.
Every shipment is accompanied by a Factory Quality Inspection Certificate (QC Pass), raw material batch test records, and product test certificates including CE Conformity and RoHS Substance Analysis. On request, we can also coordinate third-party pre-shipment inspections with SGS, Bureau Veritas (BV), or Intertek prior to container sealing.
Yes. We offer complete OEM brand customization. Logo branding can be molded directly onto the cross box body or lid via interchangeable mold inserts, or applied using high-precision ink-jet/laser engraving. Packaging options include customized master cartons printed with your company logos, barcode labels, part numbers, and multi-lingual handling instructions.
Explore our broader catalogue of decorative television trunking, wire ducting tape systems, circular 4-way cross boxes, and heavy-duty fittings.
