TJ WASUNGEN Metalsis a China-based manufacturer and wholesale supplier of prestressed anchorage devices, backed by more than 20 years of prestressed-steel manufacturing experience (established 2004). We supply post-tensioning anchorage systems for bridges, buildings, and infrastructure projects worldwide, with full production traceability from forging to final inspection.
A prestressed anchorage locks a PC strand or bar in place after it has been tensioned, so the structure keeps carrying that load permanently. During stressing, a hydraulic jack pulls the strand through the anchor head while conical wedges grip the strand from behind. Once the jack releases, the wedges self-lock under load, and a bearing plate spreads the force evenly across the concrete face — preventing slippage and reducing local cracking around the anchorage zone. Bar-type systems use a threaded coupling or lock nut instead of wedges, but follow the same load-transfer principle.
High gripping strength — wedge and nut systems tested to ≥95% anchorage efficiency against the strand's rated breaking load
Corrosion resistance — standard alloy steel and galvanized options for marine, humid, or high-exposure environments
Even load distribution — bearing plates reduce local concrete cracking and extend structural lifespan
Reusability — stressing-end anchorages in multi-strand systems can typically be re-tensioned or adjusted during construction
Fast installation — compact wedge-loaded design reduces on-site assembly time versus welded or cast-in alternatives
| Product Name | Product Short Description |
| Post‑Tension Prestressed Anchorage | Compact wedge‑type anchorage for multi‑strand post‑tensioning systems, designed to transfer and lock prestress forces into concrete beams, girders, and slabs. |
| Bearing Lock Nuts Prestressed Anchorages | Threaded locking nut assemblies that secure prestressed bars or rods at the stressing end, allowing controlled load application and re‑tensioning where needed. |
| Prestressed Anchorage Devices | General range of anchor heads, bearing plates, and wedges for post‑tensioned tendons, suitable for bridges, buildings, and hydraulic structures. |
| Helical Springs Prestressed Anchorages Device | Spring‑type helical components used with anchor plates to distribute bursting stresses and improve local ductility around the anchorage zone. |
| Hard‑Core Marine Anchors | Heavy‑duty metal anchors and anchor plates for marine and offshore structures, combining prestressing capacity with high‑corrosion‑resistance. |
| Prestressed Anchorage Plate | Flat bearing plates used at the anchorage face to uniformly distribute tendon forces into the concrete and control local stress concentrations. |
| Multi‑Strand Anchorage Devices | Multi‑strand anchor heads (e.g., YJM15‑type) for 7‑wire PC strands, enabling simultaneous stressing of several strands in beams, girders, and slabs. |
| Prestressed Concrete Anchorage | Complete anchorage systems (wedged barrel, anchor head, bearing plate) for standard post‑tensioned concrete members. |
| Prestressed Anchorage Wedge Anchor Head | Wedge‑loaded anchor head that grips the steel strands via conical wedges, providing self‑anchoring and high‑load transfer capacity. |
| Metal Anchorages Devices – Prestressed Concrete | General metal anchorages (both stressing and dead‑end types) for prestressed concrete, including round plates and compact heads for various tendon configurations. |
Anchorages Devices – Prestressed Concrete | Broader catalog‑style entry combining multiple anchorage types (stress‑end, dead‑end, couplers) for PC tendons in infrastructure and building projects. |
| Structural Anchorages Devices | Structural‑grade anchorage kits tailored for heavy‑duty frames, columns, and foundations, focusing on high‑load and fatigue performance. |
| Coupling Nut Prestressed Anchorages | Coupling nuts and splice sleeves used to join prestressed bars or rods within the structure, maintaining continuity of prestress. |
| Pre‑Stressed Anchorage Accessories for Strength Steel | Small‑component accessories (caps, grouting fittings, etc.) for monolithic steel tendons and high‑strength bars. |
| Pre‑Stressed Anchorage Accessories for Prestressed Steel | Accessory kits for PC strands and prestressed bars, including protective caps, duct end fittings, and sealing components. |
| Mono Anchorage | Single‑strand (mono‑strand) anchorage systems for light‑to‑medium prestressing applications where individual strand control is required. |
Bridge construction — post-tensioned girders and deck slabs
High-rise buildings — transfer beams and long-span floor slabs
Railway & highway infrastructure — sleepers and slope protection systems
Marine & hydraulic structures — corrosion-resistant anchorage for water conservancy projects
Nuclear power plants — high-reliability post-tensioning where tensile performance is critical
Specification | Details |
Compatible Strand Size | 12.7 mm – 15.24 mm PC strands |
Anchorage Efficiency | ≥95% with matching wedges |
Material | High-strength alloy steel; galvanized options available |
Applicable Standards | GB/T 14370-2015, JT/T 329-2010, ASTM, AASHTO |
Configuration Types | Stressing-end (live) and dead-end (fixed) |
Anchorage System | Wedge-type (strand) and threaded coupling/lock nut (bar) |
Surface Treatment | Plain / hot-dip galvanized |
Application Temperature | Standard ambient construction range (contact us for extreme-climate specs) |
Every anchorage starts as precision-forged high-grade steel, followed by controlled heat treatment for durability. Before shipment, each batch passes tensile testing, ultrasonic inspection, and grip/anchorage efficiency verification against GB/T 14370-2015. Our Tianjin facility runs dedicated production, testing, and packaging stages under a documented quality system, with full traceability from raw material to container loading.
20+ years in prestressed steel manufacturing, tracing back to 2004, now operating as Tianjin Wasungen Metal Products Co., Ltd.
In-house production and technical team covering forging, heat treatment, and testing — not a trading intermediary
Custom solutions and wholesale pricing for bulk orders, with global shipping from China
Direct factory support for project specs, sample requests, and technical documentation
Contact sales@tjwasungen.com or +86-226-8235000 for bulk pricing, technical drawings, or free samples. Send us your PC strand diameter, required anchorage type (stressing-end, dead-end, mono, or multi-strand), and project standard (GB/T, ASTM, or AASHTO) for a fast, accurate quote.
What is a prestressed anchorage device?
A prestressed anchorage device is a mechanical component used in post-tensioned concrete construction to grip and lock steel PC strands or bars after tensioning, permanently transferring the stressing force into the concrete structure.
How does a prestressed anchorage work?
The anchorage uses conical wedges (or a threaded nut for bar systems) that grip the strand under tension. As a hydraulic jack pulls the strand, the wedges lock into the anchor head, and the bearing plate spreads the force evenly into the concrete, preventing slippage after the jack is released.
What are the main types of prestressed anchorages?
Common types include stressing-end (live) anchorages, dead-end (fixed) anchorages, mono-strand anchorages for single tendons, multi-strand anchor heads for several strands at once, and bar-type anchorages using threaded coupling or bearing lock nuts instead of wedges.
What sizes of PC strand are compatible with TJ WASUNGEN anchorages?
Our anchorages are compatible with 12.7 mm to 15.24 mm PC strands, covering the most widely used strand diameters in bridge, building, and infrastructure post-tensioning systems worldwide.
What standards do prestressed anchorages need to meet?
Reputable manufacturers test anchorages to GB/T 14370-2015 and JT/T 329-2010, as well as international equivalents such as ASTM and AASHTO, covering static load, fatigue, and anchorage efficiency requirements.
What is anchorage efficiency and why does it matter?
Anchorage efficiency measures how much of the strand's rated breaking load the system can transfer without slipping or failure. TJ WASUNGEN anchorages achieve ≥95% efficiency when tested with matching wedges, meeting international post-tensioning standards.
Can prestressed anchorages be reused?
Yes. Stressing-end anchorages in multi-strand systems are typically designed for reusability, allowing contractors to re-tension or adjust strands during construction where the project design permits.
What industries use prestressed anchorages?
Prestressed anchorages are widely used in bridge construction, high-rise buildings, nuclear power plants, railway and highway infrastructure, marine structures, and precast concrete slab or girder systems.
Do you offer custom anchorage sizes or wholesale pricing?
Yes, TJ WASUNGEN supplies custom anchorage solutions and wholesale pricing for bulk orders. Contact our team with your project specifications for a tailored quote and free samples.
Where are TJ WASUNGEN prestressed anchorages manufactured?
All anchorages are manufactured at our Tianjin, China facility, established in 2004, using precision-forged high-grade steel, heat treatment, and quality checks including tensile testing and ultrasonic inspection before shipment.
