ASTM A182 F5 F11 F12 F91 flanges for condensers evaporators and boilers
A182 alloy flange has good dimensional accuracy.
Its advantage is that the price is relatively cheap; butt-welded steel flange: it is used for the butt-welding of flanges and pipes, and its structure is reasonable and its strength is high. With high rigidity, it can withstand high temperature and high pressure, repeated bending and temperature fluctuation, and the sealing is reliable. Generally, solution heat treatment is adopted, which is what people usually call “annealing”, and the temperature range is 1040~1120¡ãC (Japanese standard). you
It can also be observed through the observation hole of the annealing furnace. The large flanged pipe fittings in the annealing area should be in an incandescent state, but there is no softening and sagging.