Present study, the structure of Pipe fittings for simultaneous calibration tool was successfully designed and developed based on sizing optimization. The static analysis was performed by commercial ANSYS v14.5 software. To simulate the working process of Pipe fittings tool, the real properties of materials and working conditions were considered. The overall results are follows.

(1) The results of static structure analysis show that maximum stress appeared at the top of the inner slide block , which could reach to 61.2 MPa, and total weight is 112.3kg.

(2) The Thermal analysis results show that maximum temperature appeared at the slide tool, which reached to 302.3 ℃, and the maximum heat flux was found to 0.09W/mm2.

(3) Based on the results of the static structural analysis, the existing designs of the Pipe fittings tool were optimized. Among existing designs, there are three cases have achieved an efficient light weight around 2kg. As a result, the optimized weight of each case was 110.02kg, 109.59kg, and 114.3kg, respectively. Compared with the existing maximum stress of 61.2 MPa, the maximum stress of each case reduced to 60.1MPa, 60.9MPa, and high to 61.61MPa, respectively. Thus, the input variables have a great effect on reducing the total weight and also, they finally make the chamber angle as an inner slide block for reducing the maximum stress of the Pipe fittings tool.

(4) The results of fatigue analysis show that infinite life appeared at the pipe fittungs tool, which reached to , and safety factor is 10.2

Finally, through prototyping and performance testing, the stability of the optimized Pipe fittings tool was verified. Although, this Pipe fittings for simultaneous calibration tool had been developed in design and evaluation techniques, more detailed plans for developing the Pipe fittings tool structure will be proposed in the future study based on this research.