The pipe diameter is generally expressed in inches, that is, a standard pipe with a diameter of one inch. Converted into centimeters, it is 3.33 centimeters in diameter. Inch is a commonly used unit of length in ancient China. 110 foot is one inch, three feet is1meter, one foot is 33.3 cm now, and one inch is 3.33 cm. That is, the diameter of 1 inch water pipe is 3.33 cm.
The specifications of general household water pipes are: DN 15 (4 branches), DN20 (6 branches), DN25 (1 inch pipe), DN32 (1 inch 2 pipe), DN40 (1 inch half pipe), DN50 (2. DN 125 (5-inch tube), DN 15 0(6-inch tube), DN200 (8-inch tube), DN250 (10-inch tube), etc.
Use of automobile water pipes
The automobile water pipe is a part of the cooling system. The main function is to transport coolant and help it dissipate heat from the engine.
Water pipes are divided into: upper water pipe, lower water pipe (connecting water tank and pump end), warm air pipe (for air conditioning), iron water pipe, etc. Every water pipe has its function, but what can be seen is mainly the upper and lower water pipes in the cooling system.