GEM

TUBES AND PIPES (NONE BEING BOILER TUBES OR PARTS OF MACHINES AND ALL BEING MORE THAN SEVEN INCHES IN OUTSIDE DIAMETER); COUPLINGS, JOINTS AND CONNECTORS FOR SUCH TUBES AND PIPES; ALL OF COMMON METAL OR OF ALLOYS OF COMMON METALS; ALL OF THE FOREGOING BEING FOR INSTALLATION BELOW GROUND LEVEL OR BELOW SEA LEVEL AND BEING FOR USE IN THE EXPLORATION FOR AND THE EXTRACTION AND PRODUCTION OF OIL AND GAS