Pipes & Tubes

Pipes & Tubes

Pipes & Tubes manufacturing operation are carried out on the tube mill. Cold/Hot stainless steel strip are slitted to the required width as per the diameter of tube to be formed. The strips are then fed to the decoiler from where its passes through series of rollers & continuously formed in to a tubular shape and welded by tungsten -inert -gas (TIG) welding process. It is highly precision, completely automated process where the edge of script are heated and fused together under a protect in atmosphere of argon gas through a non consumable electrode without using any filler metal. Bead crushing operation if required is carried out where inside bead are crushed by bead hammer unit and out side are polished by a polishing belt. After calibration to the correct size, tubes are cut online and then send to further operation like cold draw, solution annealing, finishing operations, pickling, inspections, marking and dispatch.

Heat Treatment (solution annealing)

After each process of manufacturing, tubes & pipes are subject to heat treatment in a continuous annealing furnace at the specified temperatures as per grade of materiels and followed by rapidly quenching process as per the grade to prevent carbide formation.