Product Profile of Submerged Arc Welded Pipes and Tubes

TubeWeld [India] Limited supplies Submerged Arc Welded Pipes and Tubes. TubeWeld [India] Limited manufactures a range of industrial boiler plants. The Submerged Arc Welded Pipes and Tubes are used in thermal power plants, sugar & fertilizer industries, refineries, petrochemical, steel industries, smelter waste heat boiler, fluidised bed boilers, etc.

Process by which Submerged Arc Welded Pipes and Tubes are made

• This process is used for pipes from 24" to 36", i.E. 610mm to 914mm OD. Flat plate is first pressed into U and later O shape.

• The O shape is placed in an automatic welder and backed up on the inside by a water cooled copper shoe.

• Two electrodes in close proximity and used. The electrodes are not in actual contact with the pipe.

• The current passes from on electrode through a granular flux and across the gap in the pipe to the second electrode.

• The high temperature of the arc heats the edges of the plate, a welding rod placed just over the seam is thereby melted and metal is deposited in the groove.

• After the outside weld has been made, the pipe is conveyed to an inside welder where a similar operation is carried on, except that no backup shoe is need.