Shanghai Construction & Equipment Supervision Co.,Ltd

Import & Export Segment Services

1.Import & Export for Major Projects2.Centralized Equipment Procurement3.Bulk Commodities

Supervision Segment

1.Whole-Process Consulting for Construction Projects 2.Comprehensive Integrated Commissioning Services for Rail Transit 3.Energy-Saving Renovation & Energy Hosting Services

Water Treatment Solutions

1.Seawater Desalination 2.Water Treatment Solutions 3.Sludge Treatment

High strength copper wire

Product IntroductionMade from high-purity cathode copper through precision cold working and grain structure control technology, this wire significantly improves tensile strength and fatigue resistance while retaining the excellent electrical and thermal conductivity of pure copper. It features high dimensional accuracy, a smooth and oxidation-free surface, and is available in soft, half-hard and hard tempers to meet stringent requirements in precision electronics. Custom specifications are available upon request.### Key Highlights- Balance of Strength & Conductivity: Tensile strength is over 30% higher than ordinary pure copper wire, with electrical conductivity ≥98% IACS.- Precision Dimension: Diameter tolerance controlled within ±0.001mm, with an ultra-smooth surface free of burrs and scratches.- Excellent Fatigue Resistance: Long bending fatigue life and high product consistency, suitable for micro dynamic connection scenarios.- Eco-friendly & Compliant: Meets international environmental standards such as RoHS and REACH, free of harmful impurities.

High-performance Cu-Sn alloy wire

Product IntroductionThis alloy wire consists of a copper matrix with precisely proportioned tin addition, manufactured through homogenization melting and a multi-pass drawing process. It delivers excellent elasticity, wear resistance, corrosion resistance and stress relaxation resistance. With a uniform microstructure and stable performance, it is widely used in core components such as precision elastic elements, electronic connectors and contact terminals.### Key Highlights- High Elasticity & Relaxation Resistance: High elastic limit and excellent stress relaxation resistance, maintaining dimensional stability after long-term service.- Wear & Corrosion Resistance: Tin strengthens the matrix; wear performance is far superior to pure copper, with outstanding corrosion resistance in humid and salt spray environments.- Stable Contact Performance: Low and stable contact resistance with long mating life, ideal for high-frequency connectors.- Good Formability: Compatible with stamping, bending and winding processes, suitable for manufacturing complex components.

Tinned tin copper alloy wire

Product IntroductionA uniform high-purity tin layer is electroplated onto the surface of high-performance copper-tin alloy wire. It retains the high elasticity and strength of the copper-tin alloy matrix, while endowing the wire with excellent solderability, oxidation resistance and environmental corrosion resistance. Focusing on ultra-fine diameters from 0.016mm to 0.03mm, it is designed for micro electronic components and precision connector leads.0.025mm is the standard stock size; full range customization is supported.### Key Highlights- Ultra-Fine Precision: Mass-producible at 0.016mm ultra-fine diameter with uniform plating and zero missing plating.- Excellent Solderability: High-purity tin layer with strong adhesion and good wettability, ensuring void-free soldering and no solder balls.- Long-Term Protection: Effectively blocks air and corrosive media, prevents oxidation during long storage, and extends shelf and service life.- Reliable Transmission: Strong bonding between plating and matrix, low and stable contact resistance, ensuring reliable micro-current transmission.

Tinned round copper wire

Product IntroductionUsing high-purity electrical round copper wire as the core, with uniform tin plating applied via precision electroplating. It retains the high conductivity of pure copper while greatly improving oxidation resistance and solderability. Available in 0.04mm and 0.05mm fine diameters, it is mainly used in electronic leads, micro transformer windings, precision wire harnesses and other fields.### Key Highlights- High Conductivity & Low Loss: Core material conductivity ≥99.5% IACS, with low signal transmission loss.- Firm Plating: Controllable tin layer thickness with strong adhesion, no peeling during bending and stretching.- Good Weather Resistance: Effectively prevents oxidation and blackening, adaptable to harsh environments such as high temperature and high humidity.- Standard Compatibility: Complies with IEC, ASTM and other international standards, with precise dimensional tolerance for direct use in automated welding lines.

silver-plated stranded wire

Product IntroductionFormed by regular stranding of 7 ultra-fine silver-plated monofilaments. Each filament uses high-purity copper as the core, uniformly coated with a high-purity silver layer. It combines the high conductivity, high thermal conductivity and low contact resistance of silver with the flexibility and bending resistance of stranded wire, making it a core material for high-frequency signal transmission and precision aerospace electronics.### Key Highlights- Excellent High-Frequency Performance: Leveraging the skin effect, the silver plating greatly reduces high-frequency signal transmission loss with stable RF performance.- Flexible & Bend-Resistant: 7-strand structure delivers much higher flexibility than solid wire, with a long dynamic bending fatigue life.- Superior Contact Performance: Silver layer has excellent chemical stability, extremely low and stable contact resistance, suitable for high-precision connections.- Strong Environmental Adaptability: Resistant to oxidation and sulfidation, capable of long-term stable operation over a wide temperature range, meeting military and aerospace quality requirements.

20MM oxygen-free copper rodcopper rod

Product IntroductionHigh-purity oxygen-free copper rod produced by the upward casting process, with oxygen content strictly controlled below 10ppm. It is free of pores and inclusions, with a dense and uniform microstructure. With excellent electrical/thermal conductivity and outstanding processing plasticity, it serves as the core upstream billet for drawing fine copper wires, alloy wires, and manufacturing electronic components and high-end power cables.### Key Highlights- Ultra-High Purity: Copper purity ≥99.99%, oxygen content ≤10ppm, no hydrogen embrittlement risk, electrical conductivity ≥102% IACS.- Uniform Microstructure: Fine and uniform grains, free of porosity and blowholes, resulting in extremely low breakage rate in subsequent drawing.- Excellent Processability: Outstanding plasticity for large-deformation drawing, suitable for ultra-fine and micro-fine wire production.- Stable Quality: Produced under full inert gas protection with high batch consistency, complying with international standards such as ASTM B187.

8.OMM copper rod

Product Introduction8mm general-purpose low-oxygen copper rod produced by continuous casting and rolling, with oxygen content controlled between 50ppm and 200ppm. It ensures excellent electrical conductivity while offering superior cost performance. With uniform microstructure and smooth surface, it is the mainstream basic billet for civil and industrial cables including power cables, building wiring and magnet wires.### Key Highlights- Cost-Effective: Performance close to OFC rod with significant cost advantages, an economical choice for large-scale cable manufacturing.- Excellent Conductivity: Electrical conductivity ≥100% IACS, meeting the conductivity requirements of various power transmission and electrical equipment.- Stable Drawing: Good surface quality and uniform internal structure, ensuring high efficiency and low breakage rate for medium and fine wire drawing.- Mass Production Capacity: 8mm general specification is compatible with industry mainstream equipment, with sufficient production capacity and stable delivery lead time.

3.0MM copper wire

Product IntroductionElectrical round copper wire drawn from high-quality copper rod, available in soft (TR) and hard (TY) tempers. Both electrical conductivity and mechanical properties comply with international electrotechnical standards. With high dimensional accuracy and a defect-free smooth surface, it is widely used in power cable conductors, motor windings, power distribution equipment, electrical connections and other fields.### Key Highlights- Standard Compliant: Electrical conductivity ≥99.5% IACS, meeting international standards such as IEC 60228 and ASTM B3.- Adjustable Performance: Available in soft, half-hard and hard tempers to meet different mechanical strength and processing requirements.- Precise Dimension: Diameter tolerance strictly controlled within standard range with high roundness, facilitating subsequent insulation extrusion and stranding.- Premium Surface: Free of burrs, cracks, oxidation spots and other defects, with a smooth surface that effectively reduces corona discharge risk.