نمایش نتیجه 1 تا 3 از 3 نتیجه یافت شده برای tong hand:
(pronounced leed") n: the crew member who operates the lead tongs when drill pipe and drill collars are being handled. Also called lead-tong man.
n: A clutched, rotating spool that enables the driller to use the drawworks motor to apply tension to a chain connected to the makeup tongs. This tensioned chain, acting at right angles to the tong handle, imparts torque to the connection being tightened.
n: the member of the drilling crew who handles the tongs.
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