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

Flat welding flange, is a kind of flange produced after the forging blank, this kind of flange after the forging blank has a high strength, the comprehensive degree can even be compared with special steel, under the condition of messy force, can also ensure the strength, toughness, very high sex. I