Air conditioning copper tubes are often heard 2 points, 3 points, 4 cents, exactly how much?
So: 2 points means (25.4*2/8) =6.350mm. "3" means "(25.4*3/8) =9.525mm". "4" means "(25.4*4/8) =12.700mm". Refers to the diameter of the pipe.
The 2 point is 6.350mm. The 3 point is 9.525mm. The 4 point is 12.700mm. The so-called 8, refers to the 1 inch =25.4mm is divided into 8 equal parts, each one is called 1 points.
Several in charge of the general is used for waterways above the argument, 2 in charge of 9.523, in charge of 12.74, in charge of 15.88 for the name of different plastics, 4 divided into 206 points for 253, 16, these are refers to the outer diameter
