Steeltube Agencies, Kolkata, (Casing, Tubing line pipe and high test pressure line pipe, Boiler & Superheater Tubes, Heat Exchanger and Condenser Tubes, Tubes for Pressure Purposes Ordinary Duties, M.S. ERW and Carbon Steel Seamless Pipe Fittings, M.S. & C.S. Flanges, Tubes for water, gas and steam )