Specifications Design: ASME B16.34. Face to Face: ASME B16.10. End to End: ASME B16.10. End Flange: ASME B16.5. Test: API 598. Pressure: Class 150LB-600LB. Size Range: 2"-12". Material Available: WCB, WCC, LCB, LCC, WC6, WC9, C5.