Cameron Type U ram BOP Bore size: 7-1/16", 9", 11", 13-5/8", etc. API 16A ... BOP, Shaffer type annualar BOP and ram BOP. Bore size: 7-1/16", 9", 11", 13-5/8", etc. working pressure ... lift and transport the BOPs with the four lifting rods.7. The new sealing mechanism of ram shaft secures the sealing reliability ...