THREADING OF IRON PIPES, THERMALLY TREATED AND NOT WELDED FOR OTHERS
7304110003
COGGING & WELDING OF WELDED & UNWELDED STAINLESS STEEL PIPES
7304490003
FORMING OF METAL PIPES
7306900006
PIPE JOINTS AND ACCESSORIES.
7307190004
SPARE PARTS FOR PETROLEUM EQUIPMENT
7307290008
FLANGES AND TURNING
7307910005
PALLETS AND BASES
7308904008
WELL DRILLING ACCESSORIES (HANGERS-JOINTS-PLUGS (STOPPERS)
7318210003
WIRE GAUZE AND NETTING, EXPANDED METAL PLATES, NICKEL
7508003000
WELL HEAD LINING PULLEY
7907009906
METAL CASING
8414900007
VALVES FOR OIL WELL ORIFICES AND THEIR FITTINGS
8414900010
INDUSTRIAL FILTRES
8421390004
TUBE FILTRES
8421390018
AUXILIARY TOOLS FOR PETROLEUM DRILLING EQUIPMENT
8430410002
