HG/T20592(PL) plate flat welding flange

Plate flat welding flange (chemical standard HG20592, national standard GB/T9119/mechanical JB/T81): convenient to obtain materials, simple to manufacture, low cost, and widely used; but the rigidity is poor, so it should not be used for supply and demand, flammable, and explosive And the chemical process piping system that requires high vacuum degree and high and extremely hazardous occasions. The sealing surface types are flat and raised.

Welding form: plate flat welding flange is to insert the pipe into the flange to weld