... #; Stainless steel; Alloy steel forged flange Flanges of welding neck, socket welding, threaded, blind, slip on, lap joint are ... accordance with MSS SP 44 standard.Flanges with long welding neck are from classes 150 to 2500 lbs ... , UNI,AS2129,GOST-128202. Type:Plate,Slip-on,Welding Neck.Thread,Socket weld,Blind3. Size:1/2-78 ... for 1000tons10.Supply Capacity: 10000tons per year High quality forged flange