A36 / Q235 Grade H-Beam
Engineered wide-flange structural sections for workshop frameworks, warehouse columns, and infrastructure platforms.
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Annual Consolidated Output
1,500 Acres
Tianjin & Tangshan Hubs
50+ Countries
Global Supply Ecosystem
50-Year
Engineered Design Life
Product Catalog Selection
Precision Structural & Piping Pipeline Systems
Factory-direct structural profiles, engineered piping materials, and composite MEP solutions ready for international shipping from Tianjin Port.
Perforated Galvanized Angle Bar
Precision slotted equal/unequal angles engineered for rapid industrial framing and electrical tray support systems.
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Galvanized Channel Steel
Hot-rolled structural U/C channels delivering maximum bending rigidity for civil construction and equipment skid design.
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Q235B Carbon Steel Flat Bar
High-tensile precision slit flat bars optimized for grounding conductors, mechanical fabrication, and bracket engineering.
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Q235B / Q345B Steel Coil
HR & Cold Rolled bright finish sheet coil calibrated for secondary forming, stamping, and automated pipe manufacturing lines.
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Galvanized Structural Pipe
High-integrity ERW hot-dip galvanized pipe configured for pressure pipelines, infrastructure staging, and fluid conduits.
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Pressure-Resistant HVAC Valves
Heavy-duty butterfly, gate, and multi-port balancing valves matching municipal pipeline, hydronic HVAC, and composite connections.
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Engineered MEP Plastic Conduit
High-density PVC, PE, and composite water distribution piping designed for zero-leakage civil drainage and utility infrastructure.
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Macro-Industrial Engineering Solutions
Overcoming Critical Thermal & Mechanical Fluid Transfer Limits
Aluminium Plastic Composite Pipes (comprising overlap or butt-welded aluminium cores bonded by premium copolymer tie-layers between polyolefin matrices) bridge the thermodynamic performance gap left by traditional copper and pure polymer piping.
100% Oxygen Impermeability
Unlike standard monowall plastics, the continuous solid aluminium interior core creates an impenetrable barrier against oxygen diffusion (DIN 4726 compliant). This prevents oxidation and cavitation within downstream boilers, chillers, and radiator circuits.
- Completely eradicates heating loop sludge formation
- Protects brass valves and steel heat exchangers
Minimal Thermal Expansion
Boasting a coefficient of thermal expansion matching copper (0.025 mm/m·K), multi-layer composite pipes expand up to 80% less than standard PEX or PPR, eliminating pipe sag, pipe creep, and excessive expansion loop installation overhead.
- Retains rigid form post-bending for neat chases
- Lowers mechanical bracket count across riser corridors
Electrochemical Corrosion Resistance
The crosslinked polyethylene (PEX) or elevated-temperature resistant polyethylene (PE-RT) inner lining exhibits ultra-low surface roughness (Ra < 0.007 mm). This surface friction resists scale build-up and maintains hydraulic flow rates for decades.
- Unaffected by aggressive hard water and chlorine ions
- High laminar flow capacity with zero erosion
Procurement & Benchmark Economics
OEM Aluminium Plastic Composite Pipe Pricelist & Dimension Matrix
Empirical specifications, packaging tolerances, and tiered FOB baseline costs calibrated for volume distributors, EPC contractors, and OEM brands.
| Outer Diameter × Wall (mm) | Aluminium Thickness (mm) | Coil Length (m/roll) | Working Pressure (Bar / 20°C) | Standard Equivalents | Indicative Price (USD/m, FOB)* |
|---|---|---|---|---|---|
| 16 × 2.0 mm | 0.20 – 0.30 mm | 100 m / 200 m | PN 25 (2.5 MPa) | ASTM F1281 / ISO 21003 | $0.38 – $0.46 |
| 20 × 2.0 mm | 0.25 – 0.35 mm | 100 m / 200 m | PN 25 (2.5 MPa) | EN ISO 21003 / DIN 4726 | $0.52 – $0.65 |
| 25 × 2.5 mm | 0.30 – 0.40 mm | 50 m / 100 m | PN 20 (2.0 MPa) | AS/NZS 4176 / GB/T 18997 | $0.85 – $1.05 |
| 32 × 3.0 mm | 0.35 – 0.50 mm | 50 m / 100 m | PN 20 (2.0 MPa) | ASTM F1282 / CSA B137.10 | $1.40 – $1.72 |
| 40 × 3.5 mm | 0.45 – 0.60 mm | Straight 4 m / Coil | PN 16 (1.6 MPa) | DIN EN ISO 21003 | $2.30 – $2.85 |
| 50 × 4.0 mm | 0.55 – 0.70 mm | Straight 4 m / Bundles | PN 16 (1.6 MPa) | GB/T 18997.1 / ISO 21003 | $3.60 – $4.30 |
| 63 × 4.5 mm | 0.65 – 0.85 mm | Straight 4 m / Bundles | PN 16 (1.6 MPa) | ASTM F1281 / DVGW W542 | $5.40 – $6.20 |
*Note: Pricelist serves as an industrial benchmark. Quotations fluctuate according to raw aluminium commodity rates (LME), polymer compound resin spot prices, and OEM laser/butt-welding configurations.
Quality Assurance & Compliance Framework
Localized Engineering Standards & Global Certifications
Every multi-layer composite batch from our Tianjin and Tangshan clusters is certified with third-party testing protocols meeting European, North American, and Middle Eastern regulations.
Europe: DVGW & CE
Certified to EN ISO 21003 and DVGW W542 for potable drinking water, underfloor heating networks, and high-pressure radiant heating loops.
USA: NSF 14/61 & ASTM
Formulated with virgin non-toxic polymers complying with NSF/ANSI 61 toxicological criteria, ASTM F1281, and ASTM F1282 thermal pressure tests.
UK: WRAS Approved
Full biological water purity validation tested to British BS 6920 guidelines, preventing microbial biofilm development inside high-occupancy hospital plumbing.
Australia: WaterMark
Audited in compliance with AS/NZS 4176 for combined gas reticulation, plumbing water services, and solar hot-water circuits under UV conditions.
Application Engineering
High-Demanding Engineered Deployments
From extreme sub-floor thermal environments to municipal high-pressure fuel lines, examine where our multi-layer pipes are deployed globally.
Hydronic Underfloor & Radiant Heating
Operates stably within sustained 95°C cycles with short-term resistance up to 110°C. Pipes retain their formed bend without springback, cutting installation labor in half during underfloor heating layouts.
Municipal Drinking Water & Hospitals
The hygienic, food-grade cross-linked PE layer isolates fluids from metal leaching. Smooth hydraulic walls prevent lime-scale and biofilm deposition, guaranteeing pure potable drinking water.
Fuel Gas & CNG Distribution
Butt-welded solid aluminium cores serve as an impermeable barrier against explosive hydrocarbon gas leakage. Suitable for buried municipal natural gas grids and indoor LPG infrastructure.
R&D and Future Roadmap
Next-Generation Composite Extrusion Roadmap
Addressing high-pressure industrial systems through automated laser-butt fusion, EV cooling loops, and intelligent ultrasonic adhesive control.
Phase 01: Process Innovation
Butt-Weld Laser Fusion
Migrating from traditional ultrasonic lap welding to continuous fiber-laser butt welding. Yields 100% uniform radial thickness and increases weld seam burst resistance beyond 7.0 MPa.
Phase 02: Advanced Materials
PE-RT Type II Resins
Integrating second-generation Dowlex PE-RT polymers with upgraded molecular weight distribution, raising operational life under 10 bar stress at 90°C beyond typical 50-year baselines.
Phase 03: Green Decarbonization
Bio-Polymer Matrices
Formulating tie-layers and external shells using non-fossil bioplastics, slashing upstream carbon footprint by 38% across our Daqiuzhuang extrusion lines.
Phase 04: EV & Data Center Cooling
Dielectric Thermal Conduits
Engineering specialized aluminium-polymer cooling circuits for high-density AI server immersion systems and electric vehicle chassis battery heat dissipation loops.
Technical & Commercial FAQ
Frequently Asked Questions by Industrial Sourcing Teams
Direct answers addressing technical specifications, MOQ benchmarks, inspection processes, and logistics.
What is the technical difference between Overlap-Welded and Butt-Welded Multi-layer Pipes?
Overlap-welded pipes use ultrasonic welding to bond overlapping aluminium edges, offering an economical solution for residential plumbing and radiant floor heating. Butt-welded pipes join the aluminium edges flush via precise TIG or fiber-laser welding, creating a perfectly round cross-section that can withstand higher hydraulic pressure, severe mechanical bending, and industrial gas transit.
How does multi-layer composite pipe compare to PEX-a/PEX-b and Copper piping?
Multi-layer pipe provides the 100% oxygen barrier and structural shape retention of copper at a fraction of the raw material cost, with zero risk of pitting corrosion. Compared to pure monowall PEX, it expands up to 80% less when exposed to hot water, needs far fewer support brackets, and stays in position when bent by hand without heating.
What are your custom OEM branding options and minimum order quantities (MOQ)?
We provide full-service OEM/ODM manufacturing including custom laser marking (your brand name, standards, metric markings), custom color outer sleeves (white, blue, red, yellow for gas), and coiled or straight packaging. Standard MOQ starts at 5,000 meters per size, or consolidated mixed container configurations.
Can you consolidate composite pipes with steel beams, pipes, and valves in one container?
Yes. Operating out of our 1,500-acre Tianjin and Tangshan production centers, we consolidate structural steel (H-beams, channel sections), steel coils, carbon steel pipes, industrial valves, and multi-layer plastic pipes into unified 20GP or 40HQ container shipments, significantly minimizing customs clearance and freight overhead.
What pressure testing protocols and certifications are supplied with shipments?
Every lot undergoes 100% continuous spark testing for pinhole leaks, internal hydrostatic burst pressure tests (exceeding ISO 21003 criteria), thermal cycling verification, and adhesive peel tests. Complete mill test reports, CE declarations, and EN 10204 3.1 certification dossiers are dispatched with the bill of lading.
What fittings are compatible with your multi-layer piping lines?
Our composite pipes are fully compatible with standard brass and PPSU press fittings (U, TH, and V profiles), compression crimp fittings, and sliding sleeve systems. We supply calibrated deburring, reaming, and crimping tooling to guarantee leak-free, long-term connections.
Integrated Procurement Portfolio
Explore Complementary Structural & Piping Materials
Consolidate your bill of materials through our integrated production base in Tianjin, China.
A36 / Q235 Grade H-Beam
Hot-rolled structural section profiles cut to custom length and drilled to your structural drawings.
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Perforated Galvanized Angle Bar
Corrosion-resistant galvanized carbon steel angle iron for frame support and piping brackets.
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Galvanized Channel Steel
Heavy-duty structural channel available with hot-dip galvanizing for coastal and industrial construction.
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Q235B Carbon Steel Flat Bar
Solid hot-rolled flat bars machined, sheared, and punched to exact site specifications.
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Q235B / Q345B Steel Coil
Slit steel coils and sheets matching mechanical cold-stamping and composite pipe forming lines.
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Galvanized Structural Pipe
High-yield round zinc-coated pipe for pressure infrastructure, structural support, and fluid piping.
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Pressure-Resistant HVAC Valves
Full-bore gate and balancing valves engineered to integrate seamlessly into composite pipe networks.
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Engineered MEP Plastic Conduit
Complete product spectrum covering PVC drainage, electrical conduit, and utility water supply pipes.
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