ex 8413 50,Reciprocating positive displacement pumps for liquids, power-driven with a maximum flow-rate greater than 18 m 3 /hour and a maximum outlet pressure greater than 40 bar, specially designed to pump drilling muds and/or cement into oil wells,
ex 8413 60,Rotary positive displacement pumps for liquids, power-driven with a maximum flow-rate greater than 18 m 3 /hour and a maximum outlet pressure greater than 40 bar, specially designed to pump drilling muds and/or cement into oil wells,
ex 8431 39 00,Parts suitable for use solely or principally with the oil field machinery of heading 8428,
ex 8431 43 00,Parts suitable for use solely or principally with the oil field machinery of subheadings 8430 41 or 8430 49,
ex 8431 49,Parts suitable for use solely or principally with the oil field machinery of heading 8426, 8429 and 8430,