Major Mateials: A105,WCB, WCC, WC6, WC9, LCC, LCB, CF8, CF8M, CF3, CF3M Size range:1/2"-16" Pressure Rating: 150Lb-900Lb Standards: Design as per API599, API6D, BS5351, ANSIB16.34 Face to face as per API6D, ANSIB16.10 Flanged end: ANSIB16.5, BS1560 BW end : ANSIB16.25 Test as per API598, BS1560