Post-Tensioning Corrugated Duct Pipes & Pile Foundation Accessories Supplier
Global direct manufacturer and export supplier of galvanized round & flat prestressed metal corrugated ducts (EN 523 / ASTM A653), sonic logging pipe hydraulic crimping clamps, EPDM sealing gaskets, and bridge foundation accessories. Optimized for 1x20GP container consolidation with bored pile rebar and steel pipes to Middle East, Africa, and Southeast Asia.
Figure: Precision Galvanized Metal Corrugated Post-Tensioning Ducts (Round/Flat) & Complete Sonic Logging Tube Accessories
1. Prestressing Metal Corrugated Ducts (Round & Flat) Technical Specifications (EN 523 / ASTM A653)
Sino East Steel manufactures high-rigidity prestressed concrete metal corrugated ducts from prime galvanized carbon steel strip (ASTM A653 / EN 10346). Designed for post-tensioned bridge girders, highway viaducts, silos, and commercial foundations, offering superior mortar bonding, high radial stiffness, and 100% grout leak-tightness.
| Type (Profile) | Diameter / Dimension (mm) | Wall Thickness (mm) | Zinc Coating (Z/AZ) | Prestressing Tendon Capacity |
|---|---|---|---|---|
| Round Metal Duct | Φ50, Φ55, Φ65, Φ70, Φ75 | 0.25mm – 0.35mm | Z60 – Z120 g/m² | 3 to 5 Strands (12.7mm / 15.24mm) |
| Round Metal Duct | Φ80, Φ85, Φ90, Φ100, Φ110 | 0.30mm – 0.40mm | Z80 – Z180 g/m² | 7 to 12 Strands |
| Round Metal Duct | Φ120, Φ130, Φ140, Φ160 | 0.35mm – 0.50mm | Z120 – Z275 g/m² | 15 to 27 Strands (Heavy Bridge Beams) |
| Flat Metal Duct (Slab) | 50×20, 60×22, 70×22, 90×25 | 0.30mm – 0.35mm | Z80 – Z120 g/m² | 2 to 5 Strands (Post-Tensioned Slabs) |
2. Foundation Pile & Sonic Logging Tube Installation Accessories
🛠️ Hydraulic Push-Fit Crimping Clamps
Heavy-duty manual and rechargeable hydraulic clamp tools with customized 50mm/54mm/57mm hex dies. Delivers 60 kN crimping force in 15 seconds to create a water-tight seal for CSL acoustic tubes on rebar cages.
🛑 Rubber Top Caps & Steel Bottom Plugs
Engineered EPDM tear-resistant rubber top caps prevent cement slurry and debris ingress. Factory-welded or threaded steel bottom plugs with O-ring gaskets withstand 5.0 MPa hydrostatic slurry pressure.
🔗 Grout Couplers & Bridge Anchorages
Corrugated steel connecting sleeves, PE grout vents, injection ports, and multi-strand wedge anchorages (12.7mm/15.24mm mono and multi-strand prestressing systems).
3. Strategic 1x20GP Mixed Container Consolidation (Consolidated Shipping)
Sonic logging pipes and corrugated ducts are lightweight/medium-volume products. By consolidating them into single 20GP/40GP containers with Sino East Steel heavy structural goods, international contractors save up to 40% in CIF sea freight costs:
- Deformed Rebar (ASTM A615 / BS 4449): 18 – 20 Tons
- CSL Sonic Logging Pipes (50/54mm): 3 – 5 Tons
- Hydraulic Tools, Top Caps & Tie Wire: 0.5 Ton
- Total Weight: ~25.5 MT (Full 1x20GP Max Payload)
- Prestressed Concrete Metal Ducts (Round/Flat): 10,000 Meters
- Galvanized Steel Conduit & Drainage Pipes: 12 – 15 Tons
- Bridge Anchorages & Grout Vents: Complete Accessories
- Total Volume: Optimal weight/cube distribution
4. Technical FAQ: Post-Tensioning Ducts & Sonic Logging Accessories
Q1: What standard specifies the radial stiffness for post-tensioned metal corrugated ducts?
According to EN 523 and ASTM A653 standards, metal corrugated ducts must withstand a radial compressive load of ≥ 1.0 kN without permanent deformation or grout cross-section reduction under wet concrete pouring.
Q2: Can hydraulic crimping clamps and O-rings be shipped in the same container with CSL tubes?
Yes, Sino East Steel packs customized hydraulic crimping pliers, spare sealing rings, and rubber end caps in waterproof wooden cases and secures them inside the same 20GP container alongside bundled sonic logging pipes.
Q3: Which certification documents are provided upon dispatch?
Every shipment includes original EN 10204 3.1 Mill Test Certificates (MTC), zinc coating thickness verification, hydrostatic pressure test reports, and regional customs compliance certificates (Form E for ASEAN, SABER for Saudi Arabia, SONCAP for Nigeria).