AVC Blind Flange Size: 1/2"- 80",DN15-DN2000 Pressure:150LB - 2500LB,PN6- ... Neck, Blind, Threaded, Lap Joint, Socket Weld, SOH, SOP, Slip On (SO) FF, RF, Plate Material: Carbon Steel ,A105,Stainless Steel 304, 316, 304L ... best quality products and the most sincere service, AVC Blind Flange,Forged,STAINLESS STEEL