There is an interesting phenomenon in the world waiting for the straight pipe to cross! If the branch pipe is perpendicular to the main pipe, its element line length is the same as the outer diameter of the main pipe! And if it's an oblique branch pipe, you have to play counting.

Element line length of vertical branch pipe

If the outer diameter of the main pipe is d, the element line length L 1 of the vertical branch pipe is equal to d.

Element line length of diagonal branch pipe

If the branch pipe is inclined, it must be calculated according to its included angle α with the main pipe. The formula is L2=D(cosα+ 1.5sinα). Here α is the included angle between diagonal branch pipe and main pipe, and D is the outer diameter of main pipe.

Limitation on the number of branch pipes

This formula only applies to the case that there are no more than three branch pipes. If there are many branches, the cross influence between them must be considered, and then more complicated calculation methods must be used.

Matters needing attention in design and installation of circular tube

When designing and installing circular pipes, it is necessary to consider the angle and number of branch pipes and their cross influence. Only by using mathematics and physics knowledge reasonably can the normal operation of the circular tube be guaranteed.