Standard ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092 Type WN Flange, So Flange, LJ Flange, LWN Flange, SW Flange, Orifice Flange, Reducing Flange, figure 8 blind (blank&Spacer) Special Flange: According to the drawing Picture Materials Nickel Alloy: ASTM/ASME S/B366 UNS N08020, N04400, N06600, N06625, N08800, N08810, N08825, N10276,N10665,N10675 Super Stainless Steel: ASTM/ASME S/A182 F44, F904L, F317L Stainles steel: ASTM/ASME S/A182 F304, F304L, F304H, F316, F316L, F321, F321H, F347H Duplex Steel: ASTM A182 F51, F53, F55 Alloy Steel: ASTM/ASME S/ A182 F11, F12, F22, F5, F9, F91 Carbon Steel: ASTM/ASME S/A105, ASTM/ASME S/A350 LF2, ASTM/ASME S/A694/A694M, F42, F52, F56, F60, F65, F70....ASTM/ASME S/A350 LF2, ASTM/ASME S/A694/A694M, F42, F52, F56, F60, F65, F70.?