I just came into contact with this kind of things.. now I can't figure out how to do it. Who can help me to solve it? Is there any way to calculate? For example, 3/4 pipe fittings, how many millimeters is it? How can I count it? Thank you!
Generally speaking, the standard is different, the corresponding caliber is also different. I don't know which one you're referring toThe pipe can be divided into many categories, there are pieces of pipe and socket welding pipe fittings, pipe trench, pipe fittings, sanitary fittings and so on. These fittings reference standard is not the same, even pieces of pipe standard also has many kinds, domestic GB/T12459, American Standard use of ASME B16.9 and ASME B16.28, and JIS2311 DIN2605 of Germany, Japan, and so many. GB GB/T12459 is divided into two series, the same "3/4" pipe fittings, the corresponding caliber is not the same. A series of peripheral dimensions and American Standard is basically the same, with the Russian standard size B is basically the same. So it's difficult to answer what the outside diameter of 3/4 is, and you need to refer to different standards. You can go to the "standard sharing network" above to check the corresponding standards, routine standards can be found, very practical!
Pipe fittings 3/4 refers to the pipe fittings of six points (6 British points), DN (diameter) of 20mm, the outer diameter of 26.8mm.
Supplement:1 inches =25.4 mm, =8 British points, 1/2 is four points (4 British points), DN diameter 15mm, 3/4 is six points (6 points), DN20mm.
