Reverse circulating junk basket is used to catch all kinds of small junk objects such as cone, cutter, hand tools from bottom well. During drilling opertion, it produces a locak reverse circulation of fluid at well core so as to effect a complete recovery of junk in the junk basket.Type Bowl OD(mm) Catch size Catch max.OD Stell ball dia. Thread Hole size (mm) LL-F381 381 386 282 55 75/8REG 406~444 LL- F318 318 324 248 55 65/8REG 349~406 LL-F286 286 298 217 55 65/8REG 320~346 LL-F 279 279 286 211 55 65/8REG 300~341 LL- F254 254 260 195 55 65/8REG 275~295 LL-F 245 245 252 192 50 NC50 275~295 LL-F 232 232 239 179 50 NC50 255~270 LL-F206 206 210 159 45 NC50 223~241 LL-F195 195 202 149 42 NC50 215~241 LL- F178 178 184 130 42 NC50 198~209 LL- F168 168 174 123 42 NC50 190~209 LL- F130 130 136 94 40 NC31 155~165 LL-F121 121 126 90 35 NC31 142~152 LL-F114 114 121 82 35 NC31 130~140 LL- F97 97 103 62 30 NC26 117~127 LL- F89 89 94 55 30 NC26 108~114
