73051111

GALVANISED PIPE OF IRON FOR OIL OR GAS LONGITUDINALLY SUBMERGED ARC WELDED

73051119

GALVANISED PIPE OF OTHER FOR OIL OR GAS LONGITUDINALLY SUBMERGED ARC WELDED

73051121

NON-GALVAN PIPE OF IRON FOR OIL OR GAS LONGITUDINALLY SUBMERGED ARC WELDED

73051129

NON-GALVAN PIPE OF OTHER FOR OIL OR GAS LONGITUDINALLY SUBMERGED ARC WELDED

73051211

OTHER LONGITUDINALLY WELDED GALVANISED PIPE OF IRON FOR OIL OR GAS

73051219

OTHER LONGITUDINALLY WELDED GALVANISED PIPE OF OTHER FOR OIL OR GAS

73051221

OTHER LONGITUDINALLY WELDED GALVANISED PIPE OF IRON FOR OIL OR GAS

73051229

OTHER LONGITUDINALLY WELDED GALVANISED PIPE OF OTHER FOR OIL OR GAS

73051911

OTHR LINE PIPE USED FOR OIL/GAS PIPELINES MADE OF GALVANISED PIPE OF IRON

73051919

OTHR LINE PIPE USED FOR OIL/GAS PIPELINES MADE OF GALVANISED PIPE OF OTHER

73051921

OTHR LINE PIPE USED FOR OIL/GAS PIPELINES MADE OF NON GALVANISED BLACK PIPE OF IRON

73051929

OTHR LINE PIPE USED FOR OIL/GAS PIPELINES MADE OF NON GALVANISED BLACK PIPE OF OTHER

73052010

IRON CASING USED DRILLING FOR OIL OR GAS

73052090

OTHER CASING USED DRILLING FOR OIL OR GAS

73053110

OTHR TUBES,PIPS ETC,LONGITUDINALLY WELDED MADE UP OF IRON

73053190

OTHR TUBES,PIPS ETC,LONGITUDINALLY WELDED MADE UO OF OTHER

73053910

OTHER TUBES PIPES ETC,OTHERWISE WELDED MADE UP OF IRON

73053990

OTHER TUBES PIPES ETC,OTHERWISE WELDED MADE UO OF OTHER

73059010

HIGH PRSSR HYDRELCTRC CONDUITS OF STL

73059021

ERW PRECISION TUBES MADE UP OF IRON

73059029

ERW PRECISION TUBES MADE UP OF OTHER

73059091

NON ERW PRECISION TUBES MADE UP OF IRON

73059099

NON ERW PRECISION TUBES MADE UP OF OTHER