... Material:Carbon steel: Q235B, A105,16Mn, 316L 20#; Stainless steel; Alloy steel forged flange Flanges of welding neck, socket welding, threaded, ... 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- ... 1000tons10.Supply Capacity: 10000tons per year High quality forged flange