Thread Bar Systems
Continuously threaded reinforcement bars with couplers, nuts and plates — for anchors, tie-downs, post-tensioning and heavy connection details.
Fully threaded bar systems (GEWI-type)
A thread bar is reinforcing steel hot-rolled with a continuous coarse thread over its full length: any point can take a coupler, anchor nut or plate. That makes it the standard solution for ground anchors, rock bolts, tension piles, holding-down details, form ties for mass concrete, and mechanically anchored starter bars where hooks and laps will not fit.
We supply thread bars in grade 500/550 (B500B equivalent mechanicals) from Ø12 to Ø75 mm, plus the full accessory set — couplers, lock nuts, domed and flat anchor nuts, bearing plates and grout caps — all matched and certified as a system.
Typical configurations
Passive anchors: bar + end plate + nut, single corrosion protection. Permanent ground anchors: double corrosion protection with corrugated sheathing. Tie-downs / uplift piles: bar bonded full length, top anchorage to base plate. Heavy starter/continuation: coupler splices develop the full bar force without congestion-heavy laps.
Export supply
Bars ship in stock lengths up to 12 m or cut to list; accessories bagged and labelled per assembly. Full EN 10204 3.1 traceability and system test reports. MOQ one bundle; project volumes priced mill-direct.
Specification at a glance
| Diameters | Ø12 – Ø75 mm, continuous hot-rolled thread |
|---|---|
| Grade | 500/550 N/mm² yield class (B500B-equivalent ductility) |
| Lengths | Stock 6/12 m or cut-to-length |
| Accessories | Couplers · anchor nuts · plates · sheathing · grout caps |
| Uses | Ground anchors · tie-downs · form ties · mechanical splices |
| Certification | EN 10204 3.1 · system approvals on request |
FAQ
Is a thread bar the same as threaded rod?
No. Threaded rod is machined fastener stock; a thread bar is hot-rolled reinforcing steel whose ribs form a continuous thread — full rebar ductility and bond, plus mechanical anchorage anywhere along the bar.
Can thread bars be welded?
Standard practice is mechanical connection via couplers; weldability depends on the specific grade — ask us with your spec and we confirm mill data.
Do couplers develop the full bar strength?
Yes — system couplers are type-tested to exceed the bar ultimate strength, meeting slip and fatigue requirements of common anchor and splice standards.
Get your export price in 24 hours
Sizes, tonnage, destination — written wholesale quotation against today’s mill schedule. Also see all products, B500B rebar and export & delivery.
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