Import Balck Annealed Wire — Buy in Bulk from Supplier in China

Black annealed wire is a low-carbon steel wire product that undergoes controlled heat treatment to achieve a softened, ductile state suitable for tying, binding, and forming operations. Hebei Cijin Metal Wire Mesh Products Co., Ltd. manufactures both hard-drawn and soft-annealed variants from their base in Anping County, Hengshui, Hebei Province. The annealing process involves heating drawn wire above its critical temperature in a controlled atmosphere to prevent scale formation, followed by slow cooling to recrystallise the ferritic structure. Typical carbon content ranges 0.06-0.25% for annealed tying wire, with manganese additions of 0.30-0.60% to improve strength during drawing. The black designation refers to the dark oxide film from annealing in non-oxidising or mildly reducing conditions, not a surface coating.

Hard-drawn wire retains higher tensile strength through cold working without subsequent annealing, typically achieving 700-900 MPa but with limited bendability and risk of brittle fracture under impact. Soft-annealed wire reduces tensile strength to 350-500 MPa range while dramatically improving elongation to 20-30% in 250mm gauge length, enabling tight knotting and twisting without fracture. Wire gauge systems vary by market: Chinese producers commonly reference metric diameters or BWG/ SWG equivalents, with typical tying wire supplied at 1.2mm to 4.0mm diameter. Surface finish after annealing carries a loosely adherent oxide layer that provides temporary atmospheric corrosion resistance during transit, though it is not equivalent to galvanised protection. Drawing lubricant residues should be minimal for applications involving direct contact with food products or clean environments.

Construction contractors use soft-annealed wire for rebar tying, temporary fencing, and suspended ceiling hangers where hand-workability dominates over strength. Agricultural applications include vineyard training, tree staking, and baling twine substitution. Manufacturers of wire mesh, chain link fencing, and shelving incorporate both tempers depending on final forming requirements. Hebei Cijin operates from Xutuan Development Zone within Anping County, the township-level centre of China's wire mesh industry, suggesting access to integrated supply chains from rod through to finished wire products. Importers should confirm whether the company produces wire from hot-rolled rod or sources drawn wire for secondary annealing, as this affects traceability and mechanical property consistency.

Hebei Cijin Metal Wire Mesh Products Co., Ltd. maintains its registered address in Xutuan Development Zone, Anping County, Hengshui City, Hebei Province, China. Anping County functions as China's dominant wire mesh production cluster, hosting thousands of specialised manufacturers with interdependent supply chains for wire drawing, mesh weaving, and surface treatment. The company's imported tier and harbor trust tier indicate it participates in export trade, though these designations provide no verification of production scale or quality management systems. Response rate and average response hours both register zero, leaving buyer communication reliability unmeasured and requiring direct outreach assessment.

The listing does not disclose factory floor area, workforce numbers, annual wire production capacity, or ownership structure. No information indicates whether Hebei Cijin operates its own wire drawing and annealing furnaces or functions as a trading company aggregating production from smaller workshops. The supplier references ISO and SGS standards in its source materials, but buyers must independently verify certificate scope, validity dates, and accredited certification body details. Anping's industrial density offers sourcing advantages in product variety and competitive pricing, yet also creates quality consistency challenges across dispersed manufacturing units. Importers should conduct on-site audits or engage third-party inspection before committing to volume orders.