6
Fittings for pressure fluid systems; namely, access fittings, covers, thread protectors, seat protectors and adapters for access fittings, crosses and T-s, casing and tubing head spools, mandrels, valves, bonnets and flanges, wellheads and parts thereof and attachments therefore
7
Power operated probe inserters and retrievers
9
Coupons of metal for monitoring and measuring corrosion, probes of metal for measuring corrosion, down hole corrosion probes, flush probes, supports and inserts for such probes; cathodic anodes for the prevention of electrolytic corrosion, fluid sampling and flow fittings, probe retractors, safety clamps for probes, valves for probes, probe retrievers and inserters; corrosion monitoring and measuring instruments for field and laboratory use, cables for such instruments, electrical resistance probes for monitoring corrosion, hydrogen probes, patch probes, and palladium-foil probes for monitoring corrosion, temperature measuring instruments, down-hole corrosion monitoring probes, and data logging and transfer systems for probes, sensors for probes, electrodes for corrosion monitoring and measuring, transmitters, ultrasonic corrosion monitoring instruments and scanheads, communication modules for transferring corrosion data including land line, radio, microwave or satellite links, probes, interface modules and computers for monitoring and measuring corrosion and firmware for responding, analyzing and processing corrosion data