... Stainless steel; Alloy steel pipe joint Flanges of welding neck, socket welding, threaded, blind, slip on, lap joint are in accordance with ANSI ... 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 ... .Supply Capacity: 10000tons per year High quality pipe joint