Instrument about the NPT, G, PT, BSP thread

After instrument company for many years engaged in the industry experience, found that there are a lot of people when asked a thermometer but don't know thread model, actually thread for thermometer is very important, because, thermometer need thread fixed installation, bimetallic thermometer, in particular, for the convenience of customers purchase and use of instrument is the difference between the common thread with you today, the screw thread standard has: the NPT, PT, G, BSP, mid-december, universal standard, the following simple introduce these thread standard: 1, the NPT is the standard of 60 degrees taper pipe threads, full name is the National ( 美国) National standards for GB/T7307 - G is generally referred to as the pipe thread ( Guan) , 55, 60 degrees division belongs to functional, commonly known as round tube. The thread by a cylinder. 4, BSP parallel pipe thread is the British standard, BSP ( BSP ( 并行) ） Thread is referring to the imperial general sealing pipe thread ( R） The cylindrical pipe thread, belongs to a kind of wyeth thread. General the adoption of cylindrical internal thread Rp ( The old standard: Ps) And taper thread R ( The old standard: PT) Cooperate to achieve sealing effect. 5, mid-december, commonly known as the tube cone, the thread surface is processed by a cone, the general water connection is such, national standard annotations for Rc metric thread pitch, the inch thread used to represent the number of thread within per inch, which is the biggest difference between them and metric thread is 60 degrees equilateral tooth type, inch thread tooth type is isosceles 55 degrees, American thread 60 degrees. Through the above introduction is have the knowledge of the teeth of the thermometer? Hope that the selection is to help you!