... : Q235B, A105,16Mn, 316L 20#; Stainless steel; Alloy steel Forged Flange Flanges of welding neck, socket welding ... , threaded, blind, slip on, lap joint are in accordance with ANSI B ... according to API 605/ASME B16.47.Depending on special purposes, flanges can be manufactured in ... ,AS2129,GOST-128202. Type:Plate,Slip-on,Welding Neck.Thread,Socket weld,Blind3. Size:1/2-78 inch ...