Precision Cold Welding
Technology Since 1993

Trusted by global wire & cable industries for over 30 years. SGT delivers high-performance cold pressure welding machines, dies, and conductor joining systems — all without heat, filler, or flux. Stronger, cleaner, and more efficient.

Explore Our Machines

30+ Years

Global Manufacturing Excellence

Al-Cu, Cu-Cu, Al-Al

Dissimilar Metal Joining

Zero Heat, Zero Flux

Clean, Strong, Reliable Joints

About SGT Technology

SGT Cold Welding Machines has been a global supplier to the wire and cable industry for over 30 years. Our cold pressure welding technology offers the simplest and most cost-efficient method for joining copper and aluminum strips, wires, and conductors — without heat, filler, or flux.

Cold pressure welding creates molecular bonds at room temperature under high pressure, resulting in joints that are stronger than the parent material and maintain identical electrical characteristics. Our proprietary multiple upset technique automatically removes surface contaminants like oxides and oils, ensuring clean, reliable welds without pre-cleaning.

We specialize in custom welding dies, test welding services, and machines compatible with industry-standard systems. At SGT, we believe "Credit quality is the foundation of success" — and we're committed to exceeding global quality standards.

Our Product Range

From portable welders to hydraulic systems and precision dies — SGT offers a complete line of cold welding solutions for industrial, electrical, and cable manufacturing applications.

CHY200-B Hydraulic Pressure Welder

High-precision hydraulic welder for medium-duty applications. Ideal for copper and aluminum conductors.

• Max Pressure: 200 kN
• Suitable for Cu, Al, and combinations
• Compact design for bench or floor mounting

CHY700 Hydraulic Pressure Welder

Heavy-duty industrial welder for large conductors and high-volume production lines.

• Max Pressure: 700 kN
• Dual-cylinder hydraulic system
• Fully adjustable stroke and pressure

HD016 Conductors Butt Welder

Specialized chamber welding machine for aluminum and copper conductors.

• Sector-shaped & solid conductor compatible
• Pore-free, burr-free joints
• Homogeneous weld structure

PW10 Fine Wire Welder

Precision welder for fine copper wires (0.05–0.50mm).

• Designed for coil and motor lead joining
• No oxidation or heat damage
• High repeatability and strength

CHY700-B Hydraulic Welder

Enhanced version with digital pressure control and safety interlocks.

• 700 kN force with precision control
• Suitable for dissimilar metals
• CE compliant and factory tested

PCD Drawing Dies

Ultra-hard Polycrystalline Diamond dies for precision wire drawing.

• Exceptional wear resistance
• Smooth surface finish
• Custom sizes and shapes available

Tungsten Carbide Dies

Durable dies for high-volume wire production and extrusion.

• High hardness and thermal stability
• Long service life
• Compatible with SGT and other brands

Extrusion Dies & Tips

Precision-engineered dies for aluminum and copper extrusion processes.

• Uniform flow distribution
• Burr-free output
• Custom designs for complex profiles

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Why Choose Cold Pressure Welding?

No Heat Required

Eliminates oxidation, warping, and thermal stress. Ideal for heat-sensitive materials.

Stronger Than Base Metal

Cold weld joints often exceed the tensile strength of the parent material.

No Filler or Flux

Clean, pure metal-to-metal bond. No contamination or post-weld cleaning.

Dissimilar Metals

Join copper to aluminum, or different wire sizes — no problem.

Frequently Asked Questions

What materials can be cold welded?

Copper, aluminum, and their combinations (Cu-Cu, Al-Al, Al-Cu) can all be cold welded. Fine wires, strips, rods, and conductors are compatible.

Do surfaces need cleaning before welding?

No special preparation is needed. SGT machines use a multiple upset technique that ejects oxides, oils, and contaminants during the weld cycle.

Are cold welds electrically conductive?

Yes. Cold weld joints have the same electrical characteristics as the base metal — ideal for electrical connections.

Can I test my material before purchasing?

Yes. SGT offers test welding services to confirm your material’s suitability for cold pressure welding.

Are SGT dies compatible with other brands?

Yes. Our welding dies are designed to industry standards and fit most cold pressure welders from other manufacturers.

Get in Touch

For product inquiries, technical support, or sample testing — contact SGT directly.

Address: No.12, Nanyuan Road, Shunde, Foshan City, 528308 Guangdong, China

Phone: +86-757-24609379

Mobile: +86-186-76502819

Email: [email protected]

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Precision Cold Welding Technology Since 1993