What is the internal thread of 25 meter water meter?
The outer diameter of the outer thread is 33.249 mm
DN25, that is, "G1" with a pitch of 2.309 mm and a 55 degree tooth angle. G seems to be the pipe thread collectively (Guan), 55, 60 degrees division is functional, commonly known as tube round. The thread is machined from a cylindrical surface.
Our basic use of international standard pipe thread, by inches. Because the British and American Standard battle of wits, so foreign standards are divided into two kinds of 55 degrees 60 degrees. Just before our pipe thread can be divided into two categories: G and Z, some factories still use this usage, some fittings hole standard G or Z or ZG, such as G1/2 said 55 degree cylindrical pipe thread, Z1/2 or ZG1/2 55 degree taper pipe thread, Z1/2 (60) or ZG1/2 (60 60 degree degrees) said taper pipe thread.
