api5000API 5000 Flange Dimensions Industries and Applications Widely used in the industries. Pumps, Valves, and vessels in manufacturing and food processing. PipeAPI 6B API 5000 (Class 1500) 1-1316″ to 26-34 Pressure Class API 2000 (Class 600) API 3000 (Class 900) s Material Class BB Raised Faced& CC DD & EE Bolts Holes 4 to 48 Face Ring