ASME B16.47 Large Diameter Steel Flanges: Standard Exclusively for Large‑Bore Pipelines

ASME B16.47 Large Diameter Steel Flanges: Designed for large‑bore pipelines, it covers flanges ranging from NPS 26 to 60 inches, divided into Series A (imperial dimensions) and Series B (metric‑adapted dimensions). Pressure ratings include Class 150 to 900. It is mainly used for large‑bore pipeline connections in applications such as large power stations, long‑distance pipelines, and large‑scale chemical equipment.