... "-30" 3) Standard: ASME, ANSI, DIN, etc. 4) Stainless Steel, Carbon Steel, Alloy Steel, etc 1) Standard:ANSI, ASME, DIN, JIS, BS, etc ... steel, alloy steel, etc.4) Flange type:welding neck flange, slip-on flange, plate flange, blind flange, threaded flange, etc.5) Other:SPECIAL ... DESIGN AVAILABLE High Quality Alloy Steel Flange