I. Product Overview

This brass drawn copper shell is a precision stamping and drawing formed connector terminal housing, made from a solid brass sheet through multiple stamping and deep drawing processes, forming an integral seamless and焊接-free structure, which is tightly sealed and sturdy; paired with internal brass pins, it forms a male-female mating set of conductive terminals, serving as the core metal镶嵌 shell accessories for various electrical connection scenarios.
The product is processed from high-quality brass material, with acid washing purification treatment before shipment, ensuring long-lasting stable conductivity, anti-oxidation, and resistance to acid and alkali corrosion; the multi-step step limit structure design ensures precise assembly alignment, with smooth and burr-free inner and outer tube walls, and smooth male and female insertion and removal. Customized size and structure can be made according to customer drawings and samples, with material and electroplating surface treatment options available as required. Both small batch trial orders and large-scale foreign trade orders can be accepted, with the entire production process adhering to the ISO9001 quality system control.

II. Core Technology and Craftsmanship Details

1. Integrated deep stretch forming, seamless sealed shell
   The whole brass sheet is formed through multi-process continuous stamping and stretching, with the cylinder body having no seams or weld points throughout, ensuring excellent sealing and preventing electric leakage and moisture penetration; the wall thickness of the shell is uniform and consistent, with strong resistance to compression and deformation, making it difficult to deform or crack after repeated insertion and removal.
2. Multi-level step positioning structure, assembly alignment with zero deviation
   Segmented stepped outer diameter design, with precise positioning and limit during assembly, uniform insertion depth, high concentricity in male and female mating, no skewing or loose connection, and higher assembly efficiency in bulk production.
3. Pickling Clean + Fine Deburring Treatment
   The base material is acid cleaned to remove surface oxidation and oil, ensuring a clean base; after stamping and forming, the entire surface is deburred and finely polished, with smooth and rounded transitions at the inner wall, ports, and step edges, allowing for smooth insertion and removal without scratching the plating of the mating pins.
4. Excellent electrical properties of brass base material
   Selecting GB standard H62 brass material, with good metal compactness and high conductivity and heat conduction efficiency; it inherently possesses anti-oxidation properties, making it resistant to blackening and oxidation in normal environments over long-term use, and ensuring a stable resistance value.

Section 3: Customizable Processing Materials

1. H62 brass: Main choice, excellent ductility and easy to stretch and stamp, moderate conductivity with the highest cost-performance ratio, universal first choice for connector shells
2. Copper (Purple Copper): Optimal conductivity, specially used for high-power new energy conductive shells
3. Phosphor bronze: Excellent elasticity, withstands tens of thousands of insertion/extraction fatigue, suitable for frequent mating terminal shells.
4. Stainless Steel: High strength, super corrosion-resistant, customized for outdoor and severe humid conditions.

4. Optional Surface Electroplating Treatment Process

• Gold Plating: Extremely low impedance, wear and corrosion resistant, standard for aviation precision connectors and high-end new energy terminals, optimal conductivity.
• Silver Plating: Top-notch conductive properties, suitable for high-frequency signal transmission and precision instrument connectors.
• Nickel Plating: Basic rust and oxidation resistance, moderate cost, general-purpose for electrical wire harness terminals.
• Body polishing: Retain the original color of brass, suitable for internal inlaid parts that do not require electroplating and emphasize conductivity.

Five, Wide Application Scenarios

✅ Aerospace plug: aviation connector male and female terminals housing, airborne line mating housing
✅ New Energy Equipment: Energy Storage Connectors, Lithium Battery Connectors, Charging Station Conductive Terminal Copper Shell
✅ Automotive Electronics: Vehicle wiring harness connectors, vehicle sensor conductive shells, vehicle electrical mating terminals
✅ Industrial Control Sensors: Pressure/temperature sensor signal transmission housing, precision detection instrument conductive inserts
✅ Consumer Electronics: Various wire harness connectors, precision plug-in metal sleeves

Six, Core Product Advantages

1. Over 20 years of stamping experience, mature deep drawing technology, all non-standard shells can be die-cast.
2. Seamless integrated structure, superior airtightness and strength compared to spliced welding shells, with a longer service life.
3. All dimensions supported for non-standard modifications: total length, step diameter, cylinder depth, wall thickness, and opening size.
4. Material and electroplating process can be freely matched to meet various working conditions such as conductivity, corrosion resistance, and wear resistance.
5. All process dimensions and conductivity sampling, uniform and stable quality, capable of long-term stable bulk supply

Section 7: Common Procurement Q&A

Q1: Can you produce molds according to my sample or engineering drawings in a 1:1 ratio?
A: Sure, our factory has its own stamping die workshop, capable of quickly designing dies based on customer drawings and physical samples, with priority given to sample testing.
Q2: How long does it take for sample making and mass production? Is there a minimum order quantity requirement?
Sample cycle: 4-6 days; regular bulk order production cycle: 8-14 days, with flexible minimum order quantity, capable of handling small-scale customized samples. Urgent orders can be coordinated to shorten the production schedule.
Q3: Can the wall thickness of the shell and the depth of the internal cavity be adjusted?
A: The wall thickness of the cylinder, overall length, number of steps, and depth of the internal cavity opening can all be customized as required.
Q4: In high-frequency signal transmission scenarios, which surface treatment is recommended?
A: Prioritize gold plating on brass substrate, which offers low signal loss, low impedance, and more stable high-frequency transmission.
Q5: Can we process and supply the complete set of internal brass pins together?
A: Absolutely, we can produce the entire set of male and female connectors with needle and copper shell in one-stop, convenient for customers' overall procurement and assembly.