A 1250 A IGBT-inverter submerged arc welding (SAW) machine for high-deposition, heavy structural welding.

The Ralli Wolf RS125 is a submerged arc welder (SAW) with a 112-1250 A output, a 415 V supply, and 64.5 kVA input, built on IGBT technology. It is described as an economical machine for high deposition and radiographic-quality welds with excellent mechanical properties. The DC inverter output gives a stable arc, and the 3-phase 415 V supply suits workshop and plant use. It is widely used for heavy-duty structures such as girders, I-beams, railway undercarriages, and pressure vessels. The MZ 1250 refers to the automatic welding tractor and its 1250 A rating, which carries the welding head along the joint for consistent, repeatable seams on long runs. It is made for fabrication shops, steel plants, railway workshops, and pressure vessel and structural manufacturers. lntsufin.com +2

Key Features

112-1250 A welding current range
IGBT inverter technology: efficient, stable DC output
415 V, 3-phase supply: 64.5 kVA input
Submerged arc welding (SAW): high deposition and deep penetration
Radiographic-quality welds (per the manufacturer)
MZ 1250 automatic tractor system (confirm what is supplied, see notes)
Built for heavy structures: girders, I-beams, railway undercarriages, pressure vessels

Application

Girder and I-beam fabrication
Pressure vessel and tank manufacturing
Railway undercarriage and wagon work
Heavy structural steel fabrication
Long straight and circular seams in plant and shipyard work
Steel plants and heavy engineering workshops

Technical Specification

Specification	Detail
Brand	Ralli Wolf
Model	RS125 MZ 1250
Product Type	Submerged Arc Welding Machine (SAW)
Welding Current	112-1250 A
Supply Voltage	415 V, 3-phase
Input Power	64.5 kVA
Technology	IGBT inverter, DC output
Process	Submerged arc welding
Duty cycle	[confirm from the data sheet]
Wire diameter	[confirm from the data sheet]
Weight	[confirm from the data sheet]

Safety Note: For use by trained welders only. Wear a welding helmet, gloves, flame-resistant clothing, and safety boots. Install the machine on a correctly rated 415 V 3-phase supply with proper earthing and protection by a qualified electrician. Keep flux dry, ventilate the area, and keep flammable materials away from the weld.

Ralli Wolf RS125 MZ 1250 Submerged Arc Welding Machine, 112-1250A, 415V 3-Phase, DC IGBT Inverter, Heavy-Duty SAW for Girders, Pressure Vessels and Structural Fabrication

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