1 Drop line vertically down and read flow rate from bottom of chart.

2 Now move horizontally to the diagonal pressure drop line on the right side.

3 Usually drop line , the net soon strange slow etc. problem I don't at you know main reason, but that telecommunication that damn, but you should also do utmost rightness?

4 One Guilin, Hainan, East China, such as drop line 100-400 yuan, Beijing became the focus of attention of the line fell 200-1200 yuan.

5 Result of my study that the problems of great drop line maybe have, which is an essential guidance for pipe commissioning.