Hydraulic jar tester is an important tool used for testing the drilling tool, pipe stem and down hole tool in all kinds of oil well and geological. YSJ150 Hydraulic Jar Tester is designed by our company absorb the foreign advanced tecnique, combine with the character and current level of national petroleum indurstry. Advantages such as convinion operation, steady and pull strenth high, it suitable for testing pull performance and pressure performance of jar, shock absorber, accelerator etc.