ROTARY SHOULDER CONNECTIONS Tensile Yield Strength as per API

[muariya]

Hello All,

Any one explain me how to calculate Tensile Yield Strength as per API for tool joint (Reg & PAC)

which yield strength I have to take, which area I have to take (face area or square area)
Following are some example, I couldn't able to get the tabulated tensile yield & yield torque.

Any one help for me find out.