1) Alloy Steel Flange 2) Size: 1/2"-30" 3) Standard: ASME, ANSI, DIN, etc. 4) Stainless Steel, Carbon Steel, Alloy Steel ... , etc 1) Standard:ANSI, ASME, DIN, JIS, BS, etc.2) Size:1/2"- ... 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 ...