... ,self-styled) ,Tubular annular BOP and manual , hydraulic double-ram BOP. •Strictly in accordance with API 6A 6D 16A ISO ... production3.Technical Parameters:drift diameter: 140mmrated working pressure: 21Mparange of ram size:2 7/8" , 3 1/2" , or blinddimension: ... 834*330*312mmweight:125kg4. Product Photos:For more detail information ,please contact me directly,technical info and ...