Manufacturer’s Preferential Spot T2 Purple Copper Strip Red Copper Foil Grounding Copper Foil Strip 0.05 0.1. 0.3mm

High-Precision Copper Strip Supplement

Our copper strips are manufactured from high-purity oxygen-free copper (Cu ≥ 99.99%) or T2 copper cathode using an advanced production line consisting of upward continuous casting + continuous extrusion + multistage cold rolling + intermediate annealing + finish tension leveling + cleaning and passivation. This integrated process ensures fine and uniform grain structure, dense microstructure, and freedom from delamination and inclusions.

Key Process Advantages

● Oxygen content stably controlled at 8-15 ppm through upward continuous casting, significantly superior to conventional semi-continuous casting;
● Continuous extrusion eliminates welded joints along the entire length; thickness tolerance consistently maintained within ±0.003 mm;
● Real-time monitoring via in-line eddy current testing, laser thickness measurement, and surface defect vision systems to detect and remove internal cracks, inclusions, orange peel, and other defects;
● Final cleaning and passivation performed in Class 10,000 cleanroom to prevent oxidation and ensure immediate usability upon uncoiling.

Quality Control System: Fully compliant with GB/T 2059-2017, ASTM B248/B248M, JIS H3100, and certified to both ISO 9001 and IATF 16949. Each coil is delivered with complete test reports covering chemical composition, spectral analysis, mechanical properties, dimensional accuracy, surface quality, and electrical conductivity (≥101% IACS). Full traceability to raw material batch and heat number is guaranteed.

Primary Applications: Power battery current collectors for new energy vehicles, moving contacts in high-voltage vacuum circuit breakers, shielding layers for 5G RF cables, photovoltaic soldering ribbons, precision connectors, and other applications requiring extreme thickness uniformity, electrical conductivity, ductility, and softening resistance.

We specialize in supplying high-stability copper strips (width 10-650 mm, thickness 0.08-2.0 mm) to leading industry customers. Coil weights of 3-5 tons enable high-volume, long-term, zero-defect delivery programs.