Engineered for high ring-stiffness, chemical resistance, and optical fiber blowing optimization. Complete Bill of Materials stocked and exported from Tianjin Port.
Hot-rolled steel beams supplying critical structural rigidity for subterranean conduit vaults, utility bridge crossings, and central hub distribution galleries.
View Specifications
Anti-corrosion carbon steel angle sections drilled to drawing for concrete-encased duct banking, subterranean anchoring, and utility tunnel racks.
View Specifications
U/C profile hot-dip galvanized structural channels designed to hold multi-duct HDPE conduit bundles securely inside concrete utility manholes.
View Specifications
Heavy-duty ERW galvanized steel pipe offering exceptional impact and crush resistance for microduct lines under railway corridors and heavy traffic loads.
View Specifications
Engineered multi-hole honeycombed PVC conduits and single telecom ducts manufactured with low-friction inner walls for long-distance optical cable jetting.
View Specifications
Essential subterranean earthing strips (3-60mm) to safeguard underground fiber-optic repeater nodes and telecom shelters against lightning surges.
View Specifications
Grade 60/Q355 rebar in 6mm-12mm bundles used to build reinforced concrete jackets around mission-critical submarine cable landing station duct conduits.
View Specifications
Pressure-rated non-return and isolation check valves to ensure underground optical splice vaults remain completely free from municipal stormwater flooding.
View SpecificationsAddressing the shifting paradigm from direct-buried fiber to scalable, multi-duct microconduit architectures designed for 50-year maintenance-free lifecycle reliability.
Modern telecommunication outside plant (OSP) engineering prioritizes future-proof pathway deployment. By utilizing underground PVC and high-density polyethylene (HDPE) multi-path duct banks, telecommunications operators can blow optical fiber micro-cables over spans exceeding 2,000 meters using high-pressure pneumatic jetting. The internal ribbing and permanently lubricated co-extruded inner silicone linings dramatically lower the coefficient of friction (COF < 0.1), preventing micro-bending signal attenuation.
Underground telecom ducts endure severe mechanical stresses, including hydrostatic groundwater pressure, cyclic traffic surcharge loading (AASHTO H-20 / HS-20 compliance), and tectonic ground settlement. Engineering duct networks requires strict calculation of Pipe Stiffness (PS according to ASTM D2412) or Ring Stiffness (SN4, SN8 according to ISO 9969). HZXY ducts maintain nominal cross-sectional ovality below 3% under backfill compaction, ensuring unobstructed future re-pulls.
In metropolitan networks and railway crossings, direct-buried ducts require secondary physical encasement. Tianjin Huizhong Xinyu solves supply chain fragmentation by integrating heavy manufacturing: producing rigid structural galvanised conduits, deformed rebar cage reinforcement, and corrosion-resistant steel framework alongside the polymer conduit units. This turnkey package ensures that duct spaces maintain exact parallel alignments during concrete pouring operations.
Located in Daqiuzhuang, Jinghai District, Tianjin, our facility operates at the nexus of the world's most consolidated supply chain for polymer extrusion and steel fabrication.
Operating inside Tianjin's massive 1,500-acre Daqiuzhuang and Tangshan manufacturing bases gives us zero-distance logistics to premium virgin PVC resin, high-purity carbon black masterbatches, and domestic hot-rolled steel coils, minimizing base production costs.
With an annual processing capacity exceeding 10 million tons across the industrial group, we eliminate capacity bottlenecks. We can run continuous 48-hour extrusion lines to fulfill multi-hundred-kilometer inter-city telecom duct tenders on critical deadlines.
We do not rely on standard catalog dies. Our in-house mold and processing workshops support customized multi-bore layouts (3-hole, 4-hole, 7-hole plum blossom shapes), tailored color-coded stripes for fiber route indexing, and custom co-extruded traces.
Our staging yards are directly connected via heavy industrial freight arteries to Tianjin Port (Xingang). This ensures minimal ocean-container drayage costs, flexible break-bulk chartering for non-standard pipe lengths, and fast transit times to 50+ countries.
Year Established
Acres Production Base
Tons Capacity / Year
Export Destination Countries
Evaluate mechanical performance properties to select the optimal pathway material for direct bury, directional drilling, or concrete-encased trenching.
| Duct Material Class | Ring Stiffness (ISO 9969) | Installation Method | Dielectric Insulation | Tensile Yield (MPa) | Expected Design Life |
|---|---|---|---|---|---|
| Rigid PVC Telecom Duct | SN4 to SN8 (≥ 4 to 8 kN/m²) | Open Trench / Concrete Encased | Superior (> 25 kV/mm) | ≥ 45 MPa | 50+ Years |
| High-Density PE (HDPE) | SN8 to SN16 (≥ 8 to 16 kN/m²) | Horizontal Directional Drilling (HDD) | Superior (> 20 kV/mm) | ≥ 22 MPa | 50+ Years |
| HDG Welded Steel Conduit | Extreme Rigid (> SN100) | Bridge Girders, Shallow Road Crossings | Requires Grounding Strip | ≥ 235 to 355 MPa | 35+ Years in Buried Soil |
| PVC Honeycomb / Multi-Cell | SN8 (≥ 8 kN/m²) | Open Trench Direct Bury | Superior (> 25 kV/mm) | ≥ 48 MPa | 50+ Years |
Engineered for complex subterranean environments from high-density hyperscale data centers to national backbone rail networks.
Inter-building fiber campus backbones demand massive conduit capacity with minimal installation delays. We provide customized 4-way, 5-way, and 7-way color-coded underground PVC and HDPE duct packages. Integrated with watertight bell-and-spigot rubber seals, our conduit networks block moisture entry even in high-water-table marshlands.
Terrestrial backhaul duct routes connecting beach landing manholes (BLMs) to inland telecom switching facilities encounter corrosive coastal sands and heavy tidal action. Our thick-wall Schedule 40/80 PVC conduits and hot-dip galvanized mechanical protection casings guarantee complete salt-spray and acidic soil durability.
Longitudinal telecommunication pathways parallel to high-speed rail lines undergo relentless ground vibration and dynamic wheel surcharge pressure. We supply complete encased duct bank packages: combining high-tensile Q355 deformed rebar cages, structural support channels, and anti-static communication conduits built to GB/T and ASTM standards.
Streamline your vendor management matrix by shipping mixed-material Bill of Materials (BOM) in single, consolidated sea containers direct from Tianjin Port.
Avoid high shipping costs for low-density conduits. HZXY efficiently packages ducting by nesting smaller microducts inside larger steel casing pipes, alongside heavy items like deformed rebar, structural angles, and valves. This maximizes container cube efficiency and lowers your landed freight per meter.
Every shipment is delivered with verified Mill Test Certificates (MTCs), batch-tested hydrostatic burst records, resin origin traceability sheets, and third-party inspection sign-offs (SGS, BV, Intertek, or TUV) before loading at the Tianjin container terminal.
Our multilingual export coordination division commands 30 years of trade experience managing FOB, CIF, CFR, DDP, and complex documentary Letters of Credit (L/C at sight / usance). We deliver rapid documentation turnaround to ensure fast customs clearance across all destination ports.
Review key technical specifications, custom fabrication capabilities, and export packing details answered by our chief engineering team.
Direct-bury telecom ducts (often high-stiffness PVC or thick-walled HDPE) are engineered with heavy wall thicknesses (such as DB-120, ASTM Schedule 40/80, or SN8/SN16 classes) capable of handling backfill compaction and live traffic loads without supplemental support. Concrete-encased conduits (EB-20 or EB-35) have thinner walls, designed specifically to be secured within steel-reinforced concrete envelopes (duct banks), saving pipe resin costs while relying on the concrete envelope for structural integrity under high-load runways and railway crossings.
Our PVC and HDPE communication ducts feature co-extruded longitudinal interior ribbing or micro-grooves combined with a permanent solid-lubricant silicone inner boundary layer. This dual feature drastically reduces cable contact surface area and lowers the dynamic friction coefficient (COF) to below 0.08–0.10. Consequently, telecommunications installers can achieve single uninterrupted air-jetting cable runs exceeding 1,500 to 2,500 meters without duct burn-through or excessive cable tension.
Yes. As an integrated manufacturer operating across 1,500 acres in Tianjin and Tangshan, we specialize in Bill of Materials (BOM) consolidation. We combine plastic communication ducts, water/drainage pipes, and valves alongside heavy structural items—such as H-beams, channel steels, perforated angle bars, and galvanized flat bars for earthing systems. This consolidation substantially reduces freight costs, prevents shipping container dead-space, and eliminates the administrative burden of handling multiple separate suppliers.
Our telecommunications conduits and protective casings are manufactured in compliance with major global criteria, including ASTM F2160, ASTM D3485, NEMA TC-2, NEMA TC-6 & 8, ISO 9969 for ring stiffness, EN 61386-24 for underground conduit systems, and GB/T standards. Full Mill Test Certificates, dimension verification logs, and third-party testing (SGS, Intertek, BV) are provided with every dispatched production lot.
Our company headquarters and primary production bases are situated in Daqiuzhuang Industrial Zone, Jinghai District, Tianjin, China, alongside specialized processing facilities in Tangshan. Our facilities are connected via express transit links to Tianjin Port (Xingang), one of the world's largest commercial shipping hubs. This ensures immediate container dispatch, flexible break-bulk options, and reliable direct ocean routing to over 50 destination countries across Europe, the Americas, Africa, and Southeast Asia.
We provide full customization, including custom outer diameters (OD), specialized wall thicknesses, custom lengths up to 12 meters (to maximize 40ft High Cube containers), tailored continuous coil lengths on steel reels, multi-hole plum blossom configurations (3, 4, 5, 7, and 9 holes), distinct co-extruded identification color striping (e.g., orange, green, blue for phase separation), and custom pre-installed pull cords or locating tracer wires.
Explore matching long-steel sections, mechanical protective conduits, and fluid infrastructure components designed to pair with underground telecom runs.
High-uniformity HR carbon steel coils with certified yield strengths, tailored for roll-forming into high-frequency welded conduits and bridge cable trays.
View Specifications
Weather-resistant color-coated galvanized coils engineered for forming insulated wall panels and roofs of outdoor telecom repeater station enclosures.
View Specifications
Hot-dip zinc-coated solid round bars providing dependable tensile strength for subterranean concrete manhole structural ties and duct bank restraints.
View Specifications
Prime low and medium-carbon steel wire rod coiled for drawing into welded wire reinforcement mesh used in concrete-jacketed duct banks.
View Specifications
Epoxy-coated and hot-dip treated welded steel pipe engineered to serve as external sleeve jackets during horizontal directional drilling (HDD) beneath riverbeds.
View Specifications
Standard and custom-gauge round hollow sections stocked for fast export to protect underground communication microducts under heavy construction loads.
View Specifications
Precision-welded galvanized steel hardware, cable pulling eyes, and vault steps tailored to project drawings for fast, compliant outside-plant installations.
View Specifications
Comprehensive underground utility piping shipped alongside telecom ducts for unified civil utility trenching, municipal drainage, and power conduit projects.
View SpecificationsOur steel, conduit, and pipeline systems have been verified on world-class civil and transportation landmarks.
Supplied heavy structural steel and high-durability conduit protection for marine-grade utility crossings exposed to extreme salt aerosol and tidal action.
Review Materials
Engineered steel sections, conduit framing, and fluid control valves integrated into the subterranean MEP utility galleries of the terminal complex.
Review Materials
Delivered certified high-yield structural steel members and subterranean pathway elements meeting the stringent safety benchmarks of Olympic construction.
Review MaterialsWhether you are designing a metro fiber-to-the-home (FTTH) expansion, a high-density 5G C-RAN ring, or an inter-state pipeline raceway, Tianjin Huizhong Xinyu delivers tested quality, rapid container consolidation, and competitive direct-from-mill pricing.
