BB.OS and Y structure Flanged or butt-welded end Manufacture and design: API 6D or API 600 BS 1414 Face-to-face: ANSI B 16.10 Flange dimensions: ANSI B 16.5/16.47 Butt-welded end dimensions: ANSI 16.25 Inspection and test: API 6D or API 598 NPS: 2"-60" pressure: class 150-2500Lb Materials: WCB, WCC, LCB, LCC, WC6, WC9, C5, C12, CF8, CF8M, CF3, CF3M, CF8C, CN7M Packing: Plywooden case