1, argon arc welding seam on the back should be ahead of plenum, traffic, appropriate air after discharge, flow decreases.During the welding process should be continuously to the tube filled with argon.Stop lagging gas welding, make the welds are fully protected.Another should pay special attention to the air after the net can be welded, or influence the protection of argon filling effect.2, the a...

Surface finish & Characteristics and application NO.1 Hot-rolled surface,annealed and pickled,can be used as cold-rolling material,industial tanks and chem ical devices. NO.2D Cold-rolled, annealed and pickled without skinpassing the dull products can be used as automobile parts, building materrials and pipings. NO.2B The surface brightness and f...

1. The corrosion types and definition In many industrial applications, stainless steel, can provide satisfactory corrosion resistant performance today.According to the use of experience, in addition to the mechanical failure, the corrosion of stainless steel mainly displays in: the a serious corrosion of stainless steel in the form of local corrosion (i.e. stress corrosion cracking, pitting cor...