The application allows calculation of pipe connections through appropriate trimming knees at a given angle. It is possible to calculate the inserts, angle, leaving the cut knees and leaving diagonally. Suitable standard values ​​pipe diameter and radius knees 90 degrees, you can choose from the prepared table (from 1 'to 40') as well as the type of "hand". The application solves many problems encountered in this narrow specialization, simplifies tedious calculations, saving you time and numerous try-often by trial and error. The program is endorsed in most drawings, which make the program more intuitive and transparent. It helps not only to calculate departing from center to center of the knee but also from the front end face. The application is constantly expanded and supplemented with new functionalities.