Import Bare Stranded Copper Cable — Buy in wholesale FOB from Supplier in China

The bare stranded copper cable from Henan Yubian Electricians Co., Ltd. consists of multiple drawn copper wires twisted into a flexible conductor, supplied uninsulated for grounding, overhead transmission, and electrical substation applications. The product range encompasses both hard-drawn and annealed soft copper variants, with conductor cross-sections conforming to standard metric sizes from 16 mm² upward depending on current-carrying requirements. Hard copper strand offers elevated tensile strength for tensioned installations, while soft copper strand provides superior flexibility for connections subject to vibration or repeated bending. The base material is electrolytic copper with minimum 99.9 percent purity, ensuring conductivity approaching the 100 percent IACS benchmark at 20 degrees Celsius.

Hard copper strand undergoes cold drawing through successively smaller dies after initial rod breakdown, work-hardening the metal to increase tensile strength typically to 300-450 MPa depending on final diameter and strand count. Soft copper strand receives intermediate annealing heat treatment after drawing, recrystallising the grain structure to restore ductility with tensile strength typically reduced to 200-250 MPa and elongation at break increased to 25-30 percent. The surface of each individual wire may carry a thin oxide layer or proprietary passivation treatment to retard tarnishing during storage, though this is not specified in the source material and should be confirmed with the supplier. Strand construction follows either concentric-lay or equal-lay patterns, with the latter reducing internal stress and improving straightness during unreeling.

Primary applications for hard copper strand include overhead earth wires, messenger cables, and substation busbar connections where mechanical load exceeds flexibility demands. Soft copper strand dominates inside electrical equipment, transformer connections, switchgear jumpers, and telecommunications earthing systems. The cable is typically supplied on wooden drums or steel reels with protective lagging, with standard lengths of 500 or 1000 metres, though these packaging details require confirmation from Henan Yubian. Buyers should verify the specific conductivity grade, whether the product is tested to IEC 60228 or GB/T 3956 standards, and the exact delivery configuration before finalising technical specifications.

Henan Yubian Electricians Co., Ltd. is located at Qianlong Industrial Park in Huixian City, Henan Province, 453700, China, placing the manufacturer within a central Chinese industrial corridor with established metals processing infrastructure. The company carries a 'harbor' trust tier classification, and the response rate is recorded at 0.00 percent with zero average response hours, indicating that direct communication channels may be unverified or that the listing requires active follow-up to establish reliable contact. The supplier address spans industrial park, city, and provincial levels, suggesting a formal registered facility rather than trading office operation, though site verification remains advisable.

The source description details product technical characteristics extensively but provides no information about company founding date, workforce size, annual production capacity, or export history. No certifications such as ISO 9001, IECEx, or CNAS accreditation are mentioned, nor are specific client references or project portfolios disclosed. The differentiation between hard and soft copper strand indicates genuine commodity knowledge, but buyers should request factory audit reports, material mill certificates for copper cathode sourcing, and wire breakage rate statistics during drawing operations. The extent of in-house testing capabilities, including conductivity measurement, tensile testing, and metallographic examination, is unstated and requires direct inquiry.