Stainless steel tie rods are machined tension members that carry and stabilise loads in steel structures - from roof and wall bracing to curtain-wall restraints and bridge tension systems. Because they work in pure tension, they combine high strength with a slender, clean appearance: they resist corrosion, need no painting and cut maintenance cost over a building's lifetime.
Working from your design, we can select the right grade, diameter and length for you, manufacture to strict tolerances, and ship pre-assembled, ready-to-install rods with full material certificates. Our service covers technical selection advice, custom fabrication, OEM production, third-party inspection and door-to-door delivery.
Why Choose Our Stainless Steel Tie Rods?
Longest Continuous Bar - up to 7.5 m
Fewer joints, cleaner lines and less on-site splicing for long-span structural bracing.
Structural-Grade Strength
Property class A4-80 delivers tensile strength up to 800 N/mm² with guaranteed proof loads.
Pre-Assembled, Site-Ready
Supplied with locknuts and adjusting turnbuckles to cut installation time on site.
Full Traceability
Every order ships with an EN 10204 3.1 material certificate and traceable heat/batch records.
Product Specification of Stainless Steel Tie Rods
| Product Name | Stainless Steel Tie Rods for Structural Bracing |
| Material | SS304 / SS316 / SS316L / Duplex S32205 |
| Thread Range | M12 – M56 |
| Thread Standard | BS 3643 / ISO 68, cold-rolled metric thread |
| Strength | 0.2% Proof up to 600 N/mm² · Tensile up to 800 N/mm² (A4-80) |
| Surface Finish | Satin / Bright Polished / Pickled & Passivated |
| Ends & Assembly | Fork End · Eye End · Turnbuckle · Central Coupler (pre-assembled on request) |
| Max Single Length | up to 7.5 m (longer on enquiry) |
| Compliance | ISO 9001 · EN 10204 3.1 MTC · ASTM A276 · DIN EN ISO 3506 · BS 3643 |
| MOQ / Lead Time | 100 pcs · 15–25 working days |
| Packaging / Shipment | VCI-protected & thread-protected, steel-crated, LCL/FCL sea freight |
Technical Specifications
Nominal load ratings below follow DIN EN ISO 3506, property class A4-80 (min. proof 600 N/mm², min. tensile 800 N/mm²). Test certificates per EN 10204 3.1 are issued on request.
| Thread | Stress Area (mm²) | Proof Load (kN) | Breaking Load (kN) |
|---|---|---|---|
| M12 | 84.3 | 51 | 67 |
| M16 | 157 | 94 | 126 |
| M20 | 245 | 147 | 196 |
| M24 | 353 | 212 | 282 |
| M30 | 561 | 337 | 449 |
| M36 | 817 | 490 | 654 |
| M42 | 1120 | 672 | 896 |
| M48 | 1470 | 882 | 1176 |
| M56 | 2030 | 1218 | 1624 |
Note:every size runs to a single-bar length of up to 7.5 m (longer on enquiry). Threads are cold-rolled to BS 3643 / ISO 68 metric tolerance; intermediate sizes available on request.
Applications of Stainless Steel Tie Rods
for Steel Structures
Tie rods appear wherever a steel frame needs a slender, tension-resistant member to stabilise and control movement. We supply single-bar, fork-end and turnbuckle assemblies ready to incorporate into the structure - saving valuable time on site.
| Where in the Structure | How Tie Rods Are Used |
|---|---|
| Columns & rafters | Vertical and diagonal cross-bracing for lateral stability against wind and seismic loads |
| Roof systems | Sag rods / tie rods between purlins and along roof slopes to carry and control loads |
| Curtain walls & facades | Glass-curtain-wall support, restraint and cantilever bracing |
| Mezzanines & canopies | Entablature and canopy stabilisation ties in steel-framed building extension |
| Trusses & frames | Tension members and hanger support in roof trusses and transfer frames |
| Bridges & walkways | Bridge parapet and pedestrian walkway tension systems, balustrade ties |
Material Selection
Choose the grade that matches your environment. We source each grade to verified chemistry and publish the certificate with the delivery.
| Grade | Best For | Typical Use |
|---|---|---|
| SS304 (A2) | Dry / indoor environments, general structural bracing | Buildings, mezzanines, architectural features |
| SS316 (A4) | Coastal and high-humidity sites, moderate chloride exposure | Facades, balconies, bridge railings |
| SS316L | Welded assemblies and sensitisation resistance | Custom nodes, prefabricated frames |
| Duplex S32205 | Aggressive chloride / offshore / pool environments with higher strength | Marine, chemical, high-corrosion structures |
Our Anti-Corrosion Treatment
Every tie rod is treated to withstand decades of outdoor exposure. We match the treatment to your environment so the passive film stays intact from factory to the finished structure.
| Treatment | How It Protects |
|---|---|
| Grade selection by environment | 304 for dry/indoor, 316 for coastal, 316L & Duplex S32205 for pools, offshore and high-chloride sites - so the base metal resists attack before corrosion can start. |
| Pickling & passivation | Removes heat tint and surface contaminants, then re-forms a uniform chromium-oxide passive film that blocks rust initiators. |
| Controlled surface finish | Satin or bright-polished surfaces reduce chloride and dirt adhesion and make periodic cleaning far easier. |
| Bimetallic isolation | Isolation washers or coatings at stainless-to-carbon-steel joints prevent galvanic corrosion at the connection. |
| Transport & storage protection | VCI anti-corrosion paper and desiccant packs hold moisture below the corrosion threshold in transit and warehousing. |
Quality & Certification
Quality is verified at every stage - from raw bar to finished thread - and every shipment is fully documented for your project file.
| Item | What Is Covered |
|---|---|
| ISO 9001 quality system | Documented process control across incoming material → machining → threading → surface treatment → final inspection |
| EN 10204 3.1 material certificate | Chemical composition and mechanical values issued per batch for full material assurance |
| Batch / heat traceability | Heat number and batch identity tracked from raw bar to finished rod |
| Mechanical verification | Tensile and proof-load testing in line with the property class specified on your project |
| Thread & dimensional inspection | Thread pitch and gauge verification to BS 3643 / ISO 68; length and straightness checks |
| Surface & passivation test | Surface-finish roughness check and passivation test to confirm the passive film is intact |
| Third-party inspection | SGS / BV / TÜV inspection arranged on request before shipment |
| Documentation pack | Mill certificate + inspection report + test certificates + packing list shipped with every order |
Our Customization Services - Options & Process
Customizable Selection Options
| Option | What You Can Specify |
|---|---|
| Material grade | 304 / 316 / 316L / Duplex S32205 - matched to your environment |
| Diameter | M12 – M56, plus intermediate sizes on request |
| Length | Fixed stock lengths or cut-to-length up to 7.5 m+ with stated tolerance |
| Thread | BS 3643 / ISO 68 metric, or DIN / UNC / UNF on request |
| Ends type | Plain bar · fork end · eye end · turnbuckle · central coupler |
| Assembly level | Single bar or pre-assembled systems ready to install |
| Surface finish | Satin · bright polished · pickled & passivated · colour options |
| Marking | Laser-engraved specs or brand marking on request |
How Customization Works
| Step | What Happens |
|---|---|
| 1. Enquiry | Send your drawings and parameters - grade, diameter, length, ends, site environment |
| 2. Technical review | Our engineers confirm suitability and recommend the right grade and dimensional set |
| 3. Confirm & quote | Design confirmed on technical drawing; quotation and lead time issued |
| 4. Sample | Sample produced and approved before mass production (on request) |
| 5. Production & QC | Batch manufactured with in-process inspection at each stage |
| 6. Delivery | Pre-shipment inspection, packaging, and dispatch with full documentation |
Packaging, Transportation & Lead Time
| Stage | Detail |
|---|---|
| Packaging & protection | Rods are de-oiled, every thread fitted with plastic protectors, then wrapped in PE film with foam end-caps for transit and handling. |
| Anti-corrosion packing | VCI (volatile corrosion inhibitor) paper plus desiccant bags inside, holding surface moisture below the corrosion threshold during sea voyage and storage. |
| Bundling & crating | Lashed flat on steel pallets; extra-long bars are delivered in reinforced wooden crates to prevent bending under load. |
| Transport & loading | Packaged for both LCL and container-load (20ft / 40ft) sea freight; loading and lashing per container survey requirements. |
| Lead time | 15–25 working days for custom production; stocked sizes dispatch faster. Urgent orders can be arranged. |
| Trade terms | FOB / CIF / DDP per request. A packing list and full shipping documents accompany every shipment. |
FAQ:
Why choose stainless tie rods over galvanized steel?
Galvanized coating wears and corrodes at cut threads over time, while stainless resists corrosion for the structure's full life with no re-coating - a lower long-term ownership cost for exposed or coastal projects.
Can you provide load data for our engineer to verify?
Yes. We supply working-load, proof and breaking values, and can share calculation notes for your engineer's review before you commit.
Our span is longer than 7.5 m - can you still deliver in one piece?
We can supply extended single-bar lengths and advise on shipping feasibility. For very long spans we also provide spliced assemblies with couplers designed to match.
Do you accept a small trial order first?
Yes. We welcome trial quantities to validate quality and fit before full production, with samples or small lots arranged on request.
