🧵 3.0 mm wire (black annealed) - secure fastening for heavy structures
Black annealed tie wire, 3.0 mm in diameter, is a robust solution for monolithic construction and industrial installation. Its 3 mm diameter provides high tensile strength, allowing heavy steel components to be secured reliably. Mandatory heat treatment (ТО) prevents the material from becoming brittle, so it can be tightened into a strong knot without forming microcracks.
🔩 Engineering specifications (ГОСТ 3282-74)
Use the following standard parameters for accurate cost estimates and logistics planning:
- Diameter: 3.0 mm (limit deviation ±0.12 mm).
- Cross-sectional area: 7.07 mm².
- Weight per metre: 0.05549 kg.
- Metres per kg: ~18.0 m.
- Tensile strength: 300-550 N/mm² (MPa).
- Elongation: at least 15%, ensuring high ductility.
🏗️ Main applications
3.0 mm wire is used where an additional strength reserve is required and thinner wire cannot withstand the load:
- Heavy reinforcement: tying load-bearing cages made from large-diameter reinforcing bars (20-32 mm) in bridge supports, dams, and deep foundations.
- Formwork installation: making reliable ties to hold formwork panels during large concrete pours.
- Industrial packaging: tying heavy steel products (beams, pipes, and channels), round timber, and building blocks for safe transport.
- Manufacturing: producing steel mesh, staples, handles, and other utility products.
✅ Advantages of SteelStream’s material
- Excellent ductility: despite its diameter, the wire is properly annealed, does not spring back, and allows tight knots to be formed.
- Accurate weight: we dispatch the steel using certified electronic scales. You pay only for the actual mass.
- An alternative to welding: 3.0 mm wire can be used to make reliable cages without welding, preserving the strength properties of the reinforcing steel and avoiding overheating.
📦 Ordering and service
- Minimum order: 5 kg (supplied in convenient coils).
- Prompt delivery using our own vehicles, including crane trucks and Gazelle vans, across Kyiv, Vyshneve, Brovary, Irpin, and the region.
- Payment after acceptance at your site (cash or card); bank transfer is also available for companies.
- Order preparation and packaging before you arrive at our depot.
🔗 Related products for your project
Order the required steel products together to save on delivery:
- 20 mm A500C rebar - a popular size for multi-storey construction.
- 25 mm A500C rebar - for deep foundations and industrial slabs.
- 32 mm A500C rebar - heavy steel product for extra-heavy structures.
- Metal bending services - fabrication of large stirrups and reinforcing embedded components.
- Welding services - fabrication of metal structures of any complexity in our workshop.
Black wire, 3.0 mm in diameter - when a secure hold matters. We work transparently, with no prepayment and same-day delivery. Call us for advice.