Тройник прямой равнопроходной лекало

Our proposed Excel spreadsheet allows you to get dimensions for the construction of patterns (sweeps), vertical and horizontal pipes for the production of rectangular tees ravnoprohodnyh any diameter. Enter a yellow table cell outside diameter of the pipe and you instantly get the ordinate and abscissa points for layout. Move these points to paronite or cardboard and smoothly connect them together. Leka (unfolding) ready.