Pressure tapping small encyclopedia

With the development of the industry, the pressure gauge is becoming more and more common, do you know about pressure tapping have? Pressure tapping is used to connect equipment or piping and pressure gauge of measured medium, the connection between the body pressure tapping a variety of forms, there are welded pipe joint, expanding middle tube connector, tee joint, curved through the middle joint, through the middle joint, straight cone pipe joint, pressure gauge through joint, pipe connector of cutting sleeve type and so on. Pressure tapping screw thread are: metric M20X1. 5、M10X1 M14X1。 5,M20X1。 5, etc. , & other; 20' On behalf of the joint with the diameter of the thread where is 20 mm; “ 1. 5' On behalf of the teeth and the distance between the teeth to 1. 5毫米; “ M” On behalf of the tooth Angle of 60 & deg; The pipe thread; English: G“ G” On behalf of the tooth Angle is 55 & deg; Not since the pipe thread sealing and G1/8 & throughout; G3/4” G3/8” ZG1/2″ （ R1/2″ ） 、“ ZG” （ R） On behalf of the tooth Angle is 55 & deg; Not since the seal taper pipe threads. American: & other; NPT” On behalf of the tooth Angle of 60 & deg; Since the thread seal vertebra canal. 1/2″ NPT、1/4″ NPT、1/8″ The NPT, etc. Carbon steel: general purpose or ammonia medium measurement system with pressure measurement series; Stainless steel: generally speaking, there are 304 ss and 316 ss,