Bright Annealing is the process of heat treatment, which, tube
surfaces made clean and free of foreign matter. The annealing atmosphere
must be relatively free of oxygen (if a bright result is desired). This
is accomplished by removing nearly all gas (creating a vacuum) or by
displacement of oxygen and nitrogen with dry hydrogen or argon.
The
tube is not pickled afterwards as this is not necessary – and pickling
can also potentially damage the oxide layer. As a result, with a cleaner
and brighter appearance and a controlled inside-surface condition,
bright annealed tubing has a much smoother surface which imbues the
component with better resistance to pitting corrosion
SPECIFICATIONS:-
Outside Diameter : 6mm-76.2mm (1/2"-3")
Wall Thickness : 0.7-3.38mm
Length : Max 9.00 meters
MAIN GRADES:-
304/304L/304H;
321/321H; 316/316L/316H; 316Ti; 317L; 347H; 310S; UNS S31803; UNS
S32750 1.4301/1.4306; 1.4401/1.4404; 1.4438; 1.4541; 1.4550; 1.4571;
1.4845; 1.4878; 1.4462