Olets are known as branch connection fittings used to provide an outlet from a larger pipe to a smaller one. The primary pipe onto which the branch association is welded is generally called the Run or Header estimate. The pipe to which the branch association gives a channel is normally called the Branch or Outlet measure. Weldolet is an economical butt-weld branch connection, is considered to reduce stress concentrations and provide integral reinforcement manufactured according to the requirements of the clients. Weldolet is the type of fitting used to create a branch with the smaller size of main pipe. Weldolet usually used in piping with high pressure and temperature where the connection with the joint type buttweld. The use of reinforcing pad is not required on weldolet.