Design Features : Design and Manufacturing : API 6D Inspection and Testing : API 6D End Flanges dimension : ASME B 16.5 BW end Dimension : ASME B 16.25 Face to Face & End to End Dimension : API 6D/ASME B16.10 Disc Design : Gravitational acceleration Design : Capability of a value to permit the unrestricted passes of Piggability Drain & Vent Connection, Lifting Lugs & Support Legs