Engineered to international standards with rigorous mill certifications, third-party QA approvals, and immediate dispatch capability from our Northern China distribution hub.
UL94 V-0 self-extinguishing electrical conduit. Lead-free stabilizer formulation guaranteeing superior dielectric insulation up to 25kV.
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Designed for optical fiber and high-voltage underground cabling protection with ultra-low internal friction coefficient.
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Engineered for commercial DWV systems, municipal stormwater lines, and corrosive chemical effluent transport networks.
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100% non-toxic lead-free drinking water pipe manufactured with virgin suspension PVC resin, handling up to 2.5 MPa pressure.
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Heavy duty scaffolding and electrical conduit metallic tubing for high-vibration, explosion-proof industrial enclosures.
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Primary base materials for roll-forming cable trays, metallic trunking, distribution cabinet panels, and MEP framing channels.
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Critical load-bearing structural members for industrial factories, logistics centers, and multi-tier cable bridge overhead gantries.
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Comprehensive fluid control solutions matched to complete plant MEP bundles, ensuring seamless on-site joint integrity.
Access Valve Sizing DataAn in-depth metallurgical and polymer analysis for EPC engineers, electrical specifiers, and global bulk procurement directors navigating rigorous fire and life safety directives.
Traditional rigid polyvinyl chloride (PVC) extrusion relied heavily on heavy metal stabilizers—specifically basic lead carbonates and dibasic lead phosphites—to prevent thermal dehydrochlorination during high-temperature melt processing. Modern green construction regulations, spearheaded by EU Directives (RoHS 2011/65/EU and REACH Regulation EC 1907/2006 Annex XVII), strictly ban lead and other bio-accumulative neurotoxins from residential, commercial, and industrial interiors.
At our 1,500-acre Tianjin and Tangshan manufacturing bases, HZXY has completely modernized extrusion chemistry by adopting proprietary organic Calcium-Zinc (Ca-Zn) and Rare-Earth liquid stabilizer systems. These advanced organotin-free stabilizers furnish identical or superior long-term thermal stabilization (>200°C during twin-screw compounding) while completely eliminating hazardous heavy metals. Our pipes leach <0.001 mg/L in ICP-MS water immersion toxicity tests, securing compliance with stringent municipal potable contact standards and international indoor green building accreditations (LEED v4.1 and BREEAM).
In the event of an electrical short-circuit or structural facility conflagration, unprotected plastic conduit rapidly contributes to fuel load and emits corrosive hydrogen chloride (HCl) gas. HZXY engineered conduits integrate micronized antimony trioxide synergists with modified aluminum trihydrate (ATH) and zinc borate fire suppressants directly within the primary resin matrix.
The material boasts a Limiting Oxygen Index (LOI) of ≥32% (well above atmospheric oxygen levels of 21%), classified as inherently self-extinguishing. Upon localized thermal breakdown, the outer wall forms a dense, non-combustible carbonaceous char barrier within 3.2 seconds of ignition removal, extinguishing open flames and isolating the live copper conductors enclosed within.
| Test Parameter | Standard Reference | HZXY Lab Benchmark | Industry Baseline | Compliance Status |
|---|---|---|---|---|
| Flammability Rating | UL94 / EN 60695-11-10 | V-0 (≤ 10s flameout, no burning drips) | HB / V-2 | Certified Pass |
| Limiting Oxygen Index (LOI) | ISO 4589-2 / ASTM D2863 | 34.5% – 36.2% | ≥ 28.0% | High Retardant |
| Compression Resistance | EN 61386-21 Clause 10.2 | Heavy Duty 1250N / 50mm defl. < 5% | Medium 750N | Class 4 Rated |
| Impact Shock (-5°C / -25°C) | EN 61386-21 Clause 10.3 | 2.0 kg mass dropped from 100mm: 0 cracks | 1.0 kg | Extreme Cold Pass |
| Insulation Resistance | IEC 61386-1 Clause 11.2 | > 100 MΩ at 500V DC applied | > 100 MΩ | 100% Insulated |
Positioned inside the Daqiuzhuang Industrial Zone — the world's dense epicenter of steel, structural section, and industrial polymer extrusion infrastructure.
Spanning state-of-the-art complexes across Tianjin and Tangshan, our automated twin-screw extrusion workshops operate 24/7 with an annual polymer and structural capacity surpassing 10 million metric tons.
Located under 60 kilometers from Tianjin Xingang Port (the primary gateway of Northern China), our integrated yard eliminates domestic intermodal transshipment delays, slashing ocean container turnaround to under 72 hours.
Single-source accountability: Combine PVC electrical conduits, HDPE telecom ducts, galvanized scaffolding pipes, deformed rebar, and structural H-beams in a single mixed container, saving up to 28% in CIF shipping costs.
Base indicative price brackets based on Full Container Load (FCL) FOB Tianjin Port terms. Exact volumetric contracts adjust with monthly virgin PVC resin benchmark indexes (Sinopec / Formosa Plastics).
| Outer Diameter (OD) | Wall Thickness (Light) | Wall Thickness (Medium) | Wall Thickness (Heavy) | Standard Length | Indicative Price (USD/Meter) | Packing Unit |
|---|---|---|---|---|---|---|
| 16 mm (1/2") | 1.00 mm | 1.25 mm | 1.55 mm | 2.9 m / 3.0 m / 4.0 m | $0.12 – $0.18 | 100 Pcs/Bundle (PE Film) |
| 20 mm (3/4") | 1.10 mm | 1.45 mm | 1.80 mm | 2.9 m / 3.0 m / 4.0 m | $0.17 – $0.26 | 100 Pcs/Bundle (PE Film) |
| 25 mm (1") | 1.25 mm | 1.60 mm | 2.00 mm | 2.9 m / 3.0 m / 4.0 m | $0.25 – $0.38 | 50 Pcs/Bundle (PE Film) |
| 32 mm (1-1/4") | 1.40 mm | 1.85 mm | 2.40 mm | 2.9 m / 3.0 m / 4.0 m | $0.39 – $0.58 | 25 Pcs/Bundle (PE Film) |
| 40 mm (1-1/2") | 1.65 mm | 2.10 mm | 2.75 mm | 2.9 m / 3.0 m / 4.0 m | $0.59 – $0.84 | 20 Pcs/Bundle (PE Film) |
| 50 mm (2") | 1.90 mm | 2.50 mm | 3.20 mm | 2.9 m / 3.0 m / 4.0 m | $0.92 – $1.35 | 15 Pcs/Bundle (PE Film) |
*Disclaimer: Prices are indicative spot FOB Tianjin quotes. Custom coloring (White, Orange, Blue, Grey), cold-bending spring elasticity formulations, expanded bell-mouth sockets, and laser line marking are quoted upon bill of quantities submission.
Tailored engineering strategies where our flame-retardant PVC conduits integrate flawlessly with surrounding structural steel, poured slabs, and external infrastructure.
Concealed concrete slab embedded runs. High compressive rating (1250N) ensures conduits do not collapse, pinch, or fracture during aggregate concrete pumping, vibrating, or structural curing.
Under-floor power busway isolation. Zero halogen and non-corrosive decomposition attributes safeguard sensitive server blades and copper patch panels against vaporized acid during electrical faults.
Unlike galvanized steel tubing that oxidizes in salt spray atmospheres, PVC provides 100% galvanic and chemical corrosion immunity in high humidity, coastal terminals, and chemical processing plants.
Simplifying cross-border multi-standard tenders. Whether your drawings are drafted according to British Standards (BS), European Norms (EN), American ASTM, or Chinese National GB standards.
| Material Classification | China GB Standard | ASTM / UL (USA) | EN / IEC (Europe) | JIS (Japan) | Structural Match Target |
|---|---|---|---|---|---|
| Lead-Free Electrical PVC | GB/T 14823.1 / JG 3050 | UL 651 / NEMA TC-2 | EN 61386-21 (CE Marked) | JIS C 8430 | Electrical Cable Protection |
| Potable Water Supply Pipe | GB/T 10002.1 | ASTM D1785 (Sch 40/80) | EN ISO 1452 | JIS K 6741 | Pressure Drinking Mains |
| Structural Carbon Profiles | GB/T 700 Q235B | ASTM A36 | EN 10025-2 S235JR | JIS G 3101 SS400 | H-Beam, Channel, Angle Bar |
| High-Yield Structural Steel | GB/T 1591 Q355B | ASTM A572 Gr. 50 | EN 10025-2 S355JR | JIS G 3106 SM490 | Heavy Columns, Bridges, Slabs |
| Galvanized Cold Sheet / Coil | GB/T 2518 DX51D+Z | ASTM A653 CS Type B | EN 10346 DX51D+Z | JIS G 3302 SGCC | Cable Trays & Metal Framing |
| Concrete Reinforcement Bar | GB/T 1499.2 HRB400/500 | ASTM A615 Gr. 60 | BS 4449 Grade 500B | JIS G 3112 SD390 | Substructure Reinforcing |
Engineering Consultation Note: Per latest GB/T 1591-2018 harmonization rules, Chinese mills have upgraded the legacy Q345 designation to Q355, providing an enhanced guaranteed yield strength of 355 MPa across all heavy structural sections.
Clear, expert answers addressing compliance standards, quality assurance, cold bending performance, and mixed shipment logistics.
Our electrical conduits are independently tested and certified under the European Low Voltage Directive (LVD) and harmonized European Standard EN 61386-21:2004+A11:2010 (Conduit systems for cable management – Particular requirements for rigid conduit systems). "Lead-Free" compliance is verified via heavy metal screening in accordance with EU RoHS Directive 2011/65/EU and REACH Annex XVII, confirming lead (Pb) content is well below 1000 ppm (typically below 5 ppm detection threshold using ICP-OES analysis). All shipments are delivered with authentic CE declarations of conformity and mill test certificates (MTC).
Yes. By utilizing prime suspension PVC resin (K-value 65–67) paired with high-impact elastomeric modifiers (CPE), our medium and heavy-duty conduits (sizes 16mm, 20mm, 25mm, and 32mm) achieve exceptional cold-bending capabilities. Electricians can insert a standard internal bending spring and bend the pipe manually up to a 90-degree radius at room temperature (down to -5°C) without surface whitening, wall pinching, or cracking, dramatically speeding up jobsite MEP installation times.
One of our core competitive advantages as a 1,500-acre industrial conglomerate is mixed product bundling. Heavy steel profiles (H-beams, rebar, channel steel) can be loaded into the lower section of 40-foot high-cube containers or flat-rack equipment, while lightweight, rigid PVC conduit bundles are placed securely above them utilizing timber dunnage and heavy strapping. Alternatively, smaller diameter PVC conduits can be nested inside larger diameter steel or PVC drainage pipes, maximizing container space utilization and significantly slashing freight charges per ton.
For standard white or light grey conduits in sizes 20mm and 25mm, we maintain massive year-round stock ready for container dispatch within 3 to 7 days from Tianjin Port. For custom color matching (e.g., safety orange for fire alarms or blue for communications), custom lengths (e.g., 2.9m or 5.8m to match container interiors), or OEM laser branding, our standard MOQ is 5,000 meters per size, with production turnarounds completed within 12 to 15 working days.
Absolutely. We regularly facilitate independent inspection teams appointed by global buyers at our Tianjin and Tangshan inspection bays. Inspectors can conduct dimensional checks (OD, wall thickness, ovality), spark testing for insulation dielectric integrity, drop-weight impact verification under chilled conditions, and verify export packing integrity prior to container sealing.
HZXY is headquartered in the Daqiuzhuang Industrial Zone, Jinghai District, Tianjin, China — renowned as one of the largest steel and building materials clusters on earth — with a second primary production base in Tangshan. Over 90% of our export cargoes depart directly through Tianjin Port (Xingang), while specialized break-bulk vessels or project shipments can also be arranged via Qingdao, Shanghai, or Caofeidian ports upon request.
Consolidate your entire civil construction, plumbing, and structural steel bill of materials into a unified procurement workflow.
Molded flame-retardant accessories ensuring continuous electrical isolation and rapid mechanical pipe interconnection.
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Safe, high-integrity fuel and natural gas conveyance pipes manufactured under strict non-destructive quality supervision.
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Rigid architectural brackets, transmission tower bracing, and cable tray suspension system structural members.
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Essential horizontal support beams for industrial workshops, conveyor systems, and exterior curtain-wall anchors.
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Primary reinforcement for foundation footings, highway bridge piers, high-rise slabs, and precast concrete elements.
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Superior anti-corrosive flat bar for electrical grounding grids, lightning protection loops, and structural fabrication brackets.
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Solid carbon steel round stock for foundation anchor bolts, machinery tie rods, and industrial framing systems.
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Hot-rolled square solid profile applied extensively in security enclosures, decorative grating, and equipment frames.
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