... accessories based on integrated petroleum machinery. We have obtained the technical specifications of the American Petroleum Institute (API6A, 16A) certification and national ... (2-7/8 to 5, 4-1/2-7”), and double hole RAMPressure: 2,000 to 15,000psiSize: 7-1/16 ... 4. Certification:For more detail information ,please contact me directly,technical info and catalog will be passed! Popular Bop RAM Assembly ...