7 VARIABLE FREQUENCY RANGES: BAND120 80Hz, BAND280 160Hz, BAND3160 320Hz, BAND4320 800Hz, BAND5800 2KHz, BAND62K 10KHz, BAND710K 20KHz. SUB WOOFER ...Tong Wo Enterprises Limited
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
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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