The forging of flat welded flange can be divided into free forging, frog forging, extrusion, die section, closed die section and closed impact forging. The forging technology of flat welding flange can be divided into free forging, rough forging, extrusion, die forging, closed die forging and close

WELD Neck Flange is a kind of flange produced after forging blank. After forging blank, this kind of flange has high strength. The comprehensive degree can even be as good as that of special steel. In the production of flat-welded flanges, it is necessary to remove the iron on the surface of the we

Thin butt-welded flanges are often single-sided welding. In order to achieve penetration, the butt-welded flange should be left with a space of 1.4~1.6mm.　　Using thin welding wire (0.8~1.2mm in diameter) for short-circuit transfer welding, the welding current is 120~130A, and the arc voltage is 18~1

Standard classification of stainless steel flanges Specification: 1/2 "～80" (DN10-DN5000) Pressure rating: 0.25Mpa ～250Mpa (150Lb ～2500Lb) Commonly used standards: National standard: GB9112-88 (GB9113·1-88～GB9123·36-88)