Slip-on flange ASME B16.5: 1/2" to 24" BS3293: 26" to 48" Slip-on flangeStandard: ASME B16.5Size: 1/2" to 24"Pressure Grade:Class150,Class300,Class600,Class900,Class1500,Class2500 Standard: BS3293Size: 26" to 48"Pressure Grade:Class150,Class300,Class600 Material: ASTM A105ASTM A694 F42/46/52/56/60/65/70ASTM A350 LF2/LF3