CSJ type super fishing jar is a fishing tool which the jarring force is larger than other jar with same specification. It has a closed structure, reliable performance, easy to adjust and easy to operate. It is a new type of up jarring tool used in oilfield, geological exploration and drilling operation.Type Parameter CSJ44B CSJ46 CSJ 62B CSJ64B CSJ70B CSJ80 Pull-down length(mm) 4065 4065 441 4410 4410 4430 O.D. (mm) 114 121 160 165 178 203 I.D. (mm) 38 45 57 57 60 71 Stroke(mm) 305 305 320 320 320 330 Tensile load (KN) 780 980 1270 1370 1570 1870 Max. tension in downhole (KN) 340 400 700 750 800 800 Sealing pressure Mpa 20 20 20 20 20 20 Highest working temperature 150 150 150 150 150 150 Threads API NC31 NC38 NC50 NC50 NC50 65/8REG
