1. size: 1/2"-2" 2. pressure: class 150, class 300, class 600, class 800 3. material: A 105, F5, F11, F22, 304, 304L, 316, 316L, LF2 4. connection type: NPT, BSPT, SW and FLANGE 5. design standard: API 602 and ASME B16.34 6. inspection and test standard: API 589 7. structure type: B.B OS&Y, W.B OS&Y or P.T OS&Y