... and oilfield tq power tong, zq power tong, xyq power tong, casing power tong, drill pipe power tong, welcome to contact us. The hydraulic power tong is ... used for quick make-up /break-out in well service operations. *Casing Power Tongs are widely ... -8body 23/8 coupling-5coupling 23/8 coupling-31/2coupling Hydraulic system Max.pressure Mpa 18 16 18 18 18 17 ...