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CSJ Hydraulic Fishing Jar — Model Selector
Enter your fishing string’s API connection, required I.D. clearance, and expected tensile load — the tool matches you to the smallest CSJ model that meets all three, based on Welong’s published CSJ42–CSJ80 specification table.
Based on Welong’s published CSJ42–CSJ80 specification table (pull-down length, O.D., I.D., stroke, tensile load, sealing pressure, working temperature, API connection). Always confirm final selection with Welong’s engineering team against your complete well data before ordering.




