1)Size: 2"-16" 2)Pressure rating: 150#-600# 3)Material: WCB/CF8/SS304/CF8M/SS316 etc. 4)Standards: A)Design and manufacture: BS 1873/ASME B16.34 B)Inspection and Test: API598 C)Flange connection: ANSI B16.5 D)Face to Face: ASME B16.10