Stainless Steel Flange 1.Size:3/8"~160" 2.Standard:ASME, ANSI, API, DIN, BS, AS, JIS, JPI socket welding flange ansi b 16.5 1.certificate:ISO9001,ABS,BV 2.standard:ASME,DIN,JIS,GB,BS 3.competitive price,high quality welded neck flange,socket weld flange, carbon steel flange,stainless stel flange,butt welding flanges,forged weld flange,3000lb forged flange,a105 pn16 forged flange,socket weld ...