Welding operations

Manual arc welding and semiautomatic welding

  Metal structures made of structural, stainless and  heat-resistant steels and alloys, titanium alloys, nickel alloys,  aluminum alloys. Dimensions up to 4000x3500x12000 mm under 20 tons in weight.

Automatic argon arc welding and plasma welding

Circular seams of metal structures made of structural, stainless and heat-resistant steels and alloys, titanium alloys, nickel alloys, aluminum alloys with diameter 6 – 2500 mm.
Longitudinal joints of shell rings made of same steels and alloys with diameter 8 – 1500 mm.

Automatic hidden arc welding

 

Circular seams of metal structures made of structural and alloy steels with diameter 170 – 2000 mm.
Longitudinal joints of shell rings with diameter 400 – 1000 mm.

Vacuum electron-beam welding 

  Circular seams of metal structures made of structural, stainless and heat-resistant steels and alloys, titanium alloys, nickel alloys, aluminum alloys with diameter 5 – 2200 mm.
Longitudinal joints of shell rings made of same steels and alloys with diameter up to 2200 mm and the length up to 1500 mm.

Arc welding in manned work enclosure in controlled argon medium

  Metal structures made of titanium alloys with max dimensions of 1700x2200x2500.
Quality of weld seams is tested by capillary method, ultrasonic flaw detection method, radiographic method and by dye penetrant flaw detection method.