API6A MATERIAL SERVICE CATEGORIES & RATING LEVELS

api 5000API 6A TEMPERATURE CLASS L: SERVICE -50ºF TO 180ºF (-46ºC TO 82ºC) 2,000 3,000 5,000 API 60K Alloy Steel Corrosive (CO2) & Sour (H 2S) NACE4 MR01-75 T26F F 2,000Beware, some suppliers and manufacturers supply normal A105N 36K material flanges stamped as 3,000 or 5,000, these interconnect with API sizes (example a 2 ANSI A105 1500 class flange rated at 3,700 psi CWP is the same as