... Flange, Blind Flange, Threaded/Screwed Flange, SW Flange, Spectacle Blind... Stailess Steel Flange Type: Slip-on Flange, Socket Welding Flange, Blind Flange ... "Face: RF, FF, RTJMaterial: a). Carbon Steel: STANDARD: ASTM/ASME A105; A350; A694. b). Stainless Steel: STANDARD: ASTM/ASME A182, 316 and ... so on. c). Alloy Steel: STANDARD: ASTM/ASME A182 F1, F5 and so on. Standard: ...