Pickled / Passivated Tubes. There processes remove iron contamination, oxide
scale and other foreign materials which may affect the appearance and corrosion
resistance of the tubes.
Tubes with heat Treatment as per International Standards or your specific
requirements. Oxide annealing, followed by a Pickling / Passivation treatment
is required for optimum corrosion resistance. Bright hydrogen annealing
which produces a smooth surface finish is also available.