Drilling Tools offers a variety of subs in both 4145 heat-treated steel and non-magnetic metal. Sub Types: Float Subs Lift Subs Crossover Subs ...Drilling Tools Intetnational Inc
PRE-AMP CONTROL FREQUENCY: 40, 100Hz, 275Hz, 700Hz, 2KHz, 5KHz, 14KHz. SUB-WOOFER CROSSOVER FREQUENCY: 30Hz 320Hz SUB-WOOFER OUTPUT LEVEL CONTROL ...Tong Wo Enterprises Limited
Our cross over sub is designed for connection of drill stem component, which is suitable for petroleum, natural gas and geology drilling work. It can ...S & B Drilling International
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