... ,reliable ,and easy to handle with high mobility .This series of tongs can be connected to computer comtrolling units and can ... well mechanical tool for surface operations in oil fields.National Invention Patent of the tong has been got .The tongs are designed ... save the ultimate data ,such as :torque ,number of ciccles ,torque/time of .circles,torque/time. curves,date,time,well-team number ...