National Oilwell Varco
National Oilwell Varco,as the largest Drilling equipment manufacturer，it provides the widest products including onshore and offshore rigs and sprares,workovers,Tube inspection and coating,drill string,lifting equipment and well tools such as bits,downhole motor.We can provide Top drive spares including back tong,washing pipe packing,washing pipe assembly,cylinder,Gear oil filter,encoder,PLC module,Explosion-proof Solenoid Valves,M/D TOTCO Gauge,etc.
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