split flanges of code 61 and code 62 to SAE J518 of material F316L or304 , specifiations as: Code 61: 08,12,16,20,24,32 Code 62: 08,16,24,32 Made of forging steel C1045, heat-treated and zinc plated to SAE J518 Code 61 & 62, with bore of 1", 1 1/4", 1 1/2", 1 3/4", 2", 2 1/2", 3" etc. Welcome your enquiry. SAE split halve flange size:1/2''--5''