Plays a role of the fastening flange bolts in the flange connection, usually the selection of the bolt material based on commonly used materials.Including standard flange usually use all kinds of pressure and temperature range.And the other environmental conditions, such as fluid, flange material itself, engineering geographical position, etc into consideration.


According to the thickness of the flange and the aperture choose suitable bolt, bolt diameter should be smaller than the aperture 1-2 mm, can't choose the same bolt of aperture, lest the bolt hole is error is big to use bolt diameter.The relative thickness of the flange length out of 2-3 cm.


Sometimes customers need all threaded stud, I also make a brief introduction:


Stud is full thread, a manufacturer is decided to stud end chamfering or round.The end of the maximum height of pitch.When measuring the length of the stud must contain the length of the threaded end.The type of thread can be coarse thread or greater than the M39 and fine thread pitch of 4 mm.More than often, M39 fine thread for industrial use, M64 and a coarse thread is commonly used in tap water industry.