Description
1. Product Overview
Black Annealed Binding Wire is a low-carbon steel wire subjected to annealing to achieve enhanced softness, flexibility, and ease of handling. It is primarily used for tying reinforcement bars, construction materials, bales, and general industrial bundling applications where secure and efficient fastening is required. Its combination of high ductility, consistent tensile performance, and economical pricing supports fast manual or automated tying operations. As a high-volume construction and industrial consumable, it offers buyers a practical balance of performance, reliability, and sourcing efficiency.
2. Key Specifications & Technical Characteristics
- Material: Low-carbon steel
- Grade: Black annealed steel wire; commercial/industrial grade
- Carbon Content: Typically low-carbon steel, approximately 0.05–0.15% C
- Surface: Black annealed finish
- Color: Black/dark gray
- Wire Diameter: Commonly 0.8–4.0 mm; customized sizes available
- Tensile Strength: Typically approximately 350–550 MPa, depending on specification
- Elongation: High ductility suitable for repeated manual bending and tying
- Form: Coils, straight-cut lengths, or spool-packed wire
- Flexibility: Soft and highly workable for rapid tying and binding
- Packaging Options: Coil, spool, bundled rolls, waterproof plastic wrapping, and export-grade palletized packaging
- Customization: Diameter, coil weight, length, packaging, and labeling can be supplied according to buyer requirements
- Shelf Life: Long shelf life when stored in a dry, covered environment away from moisture and corrosive chemicals
3. Core Industrial Applications
- Construction: Reinforcing steel bar tying, concrete reinforcement cages, structural framework, and general site binding.
- Agriculture: Bale tying, fencing support, crop handling, and agricultural bundling applications.
- Recycling & Waste Management: Securing compressed paper, cardboard, textiles, and other recyclable materials.
- Industrial Packaging: Bundling pipes, metal products, construction materials, and manufactured goods.
- Manufacturing & General Fabrication: Temporary fastening, component bundling, and workshop applications.
Its annealed structure provides superior flexibility compared with harder unannealed wire, allowing workers to twist and secure bundles quickly with reduced breakage. Consistent diameter and mechanical properties support predictable consumption, while its low material cost makes it suitable for high-volume industrial operations.
4. Competitive Advantages
- Quality Consistency: Controlled wire diameter, annealing, and mechanical properties support dependable tying performance.
- Supply Reliability: Suitable for recurring bulk procurement and large-scale construction requirements.
- Logistics Capability: Available in export-ready coils and customized packaging optimized for containerized transportation.
- Price Competitiveness: Low-carbon steel construction and efficient manufacturing provide an economical fastening solution for high-volume applications.
- Operational Efficiency: High flexibility enables fast twisting, cutting, and forming with minimal handling difficulty.
- Sustainability: Steel is widely recyclable, supporting material recovery and circular-economy initiatives.
- Technical Documentation: Product specifications, inspection documentation, mill certificates, and quality records can be provided according to buyer and project requirements.
- Strategic Sourcing Value: A standardized, high-consumption consumable that can be procured in bulk to improve supply continuity and control total fastening costs.
5. Commercial & Supply Information
- Minimum Order Quantity (MOQ): Bulk — 20 MT
- Loading Capacity: Approximately 20–25 MT per 20-foot container, depending on coil configuration, packaging, and applicable container weight restrictions








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