Resistance Welding

Butt Welding Machine

DC Welding Products (Flashless-Butt Welding Machine)
DC Welding Products (Flashless-Butt Welding Machine)
Specification / Model UZC-750 UZC-1500 UZC-3000 UZC-4000
Rated power 750KVA 1500KVA 3000KVA 4000KVA
Min. diameter 230mm 250mm 450mm 500mm
Max. width 220mm 320mm 500mm 600mm
Max. cross section 800m㎡ 1500m㎡ 3000m㎡ 3850m㎡
Max. clamping force 400kN 500kN 800kN 1000kN
Max. upset force 200kN 250kN 400kN 500kN
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DC Flash-Butt Welding Machine
DC Flash-Butt Welding Machine
Specification / Model UZD-600 UZD-1200 UZD-1800
Rated power 600KVA 1200KVA 1800KVA
Min. diameter 300 mm 450 mm 450 mm
Max. width 430 mm 650 mm 900 mm
Max. cross section 2100 m㎡ 4000 m㎡ 5400 m㎡
Max. clamping force 7000 kN 1200 kN 1400 kN
Max. upsetting force 350 kN 600 kN 700 kN
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AC Flash-Butt Welding Machine
AC Flash-Butt Welding Machine
Specification / Model UNC-400 UNC-800 UNC-1000 UNC-1600
Rated power 400KVA 800 KVA 1000 KVA 1600 KVA
Min. diameter 250mm 300mm 500mm 500mm
Max. width 320mm 430mm 650mm 650mm
Max. cross section 1800m㎡ 2150m㎡ 3750m㎡ 4000m㎡
Max. clamping force 500kN 700kN 800kN 1200kN
Max. upset force 250kN 350kN 400kN 600kN
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Ring Gear Butt Welding Machine
Ring Gear Butt Welding Machine
Model UNC-200 UNC-300 UNC-400 UNC-500
Rated power 200KVA 300KVA 400KVA 500KVA
Min. diameter 230mm 240mm 240mm 240mm
Max. diameter 300mm 400mm 500mm 500mm
Max. width 12mm 16mm 18mm 20mm
Max. thickness 12mm 16mm 18mm 200mm
Max. cross section 144mm² 256mm² 324mm² 400mm²
Max. clamping force 160kN 180kN 200kN 220kN
Max. upset force 120kN 140kN 160kN 180kN
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Mountain Welding is an established manufacturer of industrial production systems with more than three decades of experience in the design and production of resistance welding systems.

The company currently focuses on fully and semi-automatic shock absorber lines and rim wheel assembly lines, drawing on extensive experience serving customers across diverse industrial sectors.

In 1992, Mountain Welding started with one core fundamental technology: the welding machine.

Since then, Mountain Welding has expanded and manufactured more than 2,000 welders for the automobile, agriculture, household appliance, architecture, and railroad industries. This manufacturing depth reflects long-term capability in delivering production systems built for consistent quality, reliable operation, and strong production performance.

The company’s resistance welding systems are used in the production of shock absorbers, wheels, fuel tanks, ring gears, drive shafts, drive bearings, rear axles, and other critical components. With proven application across high-demand industrial environments, Mountain Welding has built its market presence through experience, equipment volume, and adoption in a wide range of end-use industries.

What is Butt Welding?

Butt welding is a thermal fusion process used to join two thermoplastic components by heating their mating surfaces and pressing them together under controlled pressure.

Rather than relying on mechanical hardware, the fusion process creates a continuous molecular bond between the two parts. Once cooled, the joint becomes a seamless section of material rather than a connection point.

Unlike mechanical joints, a proper fusion weld:

  • Creates a continuous molecular structure
  • Eliminates leak paths
  • Maintains corrosion and chemical resistance
  • Forms a permanent joint
When Butt Welding is the Right Choice?

If your application requires:

  • Long-term reliability
  • Chemical resistance
  • Structural integrity
  • Minimimal mantaienence

Butt fusion welding is often the most effective joining method for thermoplastic systems.
When performed correctly, the joint is not just a connection, it’s a continuation of the material itself.