High pressure flange

High pressure flange refers to the flange used for connection of pipes or related equipment with an applied pressure of more than 10MPA. It is a kind of high pressure pipe fittings. It is mainly divided into traditional high pressure flange and self tightening high pressure flange

High pressure flange, as an important equipment for connecting various pipelines, plays a very important role. In particular, flanges used in important places such as oil exploitation, gas transportation and environmental engineering should be foolproof. Therefore, there are strict executive standards for the production and manufacturing of high pressure flanges. Next, I will briefly introduce the standards of flanges

High pressure flange size

High pressure flange generally refers to the flange used for the connection of pipes or equipment with pressure greater than 10 mpa. At present, it mainly includes traditional high pressure flange and high pressure self tightening flange. The sealing principles adopted by these two types of high-pressure flanges are different, so the application occasions are also different. Like other parts, flanges also have many different models and specifications

High pressure flange material

The main material of traditional high pressure flange is "steel" - including carbon steel, stainless steel and alloy steel. Among the carbon steel materials, the carbon steels with the grades of 20 #, Q235 and Q345 (mainly 16Mn in the old national standard) are widely used; Among stainless steels, 304L, F316 and 316L stainless steels are widely used; Among alloy steels, alloy steels with grades of F9, F11, F12, 16MnR and Cr5Mo are used more frequently. In addition, I would like to say that. At present, ceramic composite steel is also gradually used in the production of traditional high-pressure flange. In addition, the performance of the traditional high-pressure flange made of ceramic composite steel can be proved to be much higher than that of other high-pressure flanges

High pressure flange models

The application of high pressure flange is different, so its model is not a single type. The model of high-pressure flange is JB/ZQ4485-86, which includes two types of flange A with nominal pressure of 25Mpa and flange B with nominal pressure of 16Mpa. The model of flange A is 50/76-25 JB/ZQ, and the outer diameter is usually 76mm. The model of flange B is B40/48-16 JB/ZQ 4485-86, and its outer diameter length is 48mm

What is a high pressure flange

High pressure flange: the sealing gasket used for the connection of pipes or equipment with a pressure higher than 10MPa is installed between the sealing surfaces of two flanges. After tightening the nut, the specific pressure on the sealing gasket surface reaches a certain value, causing plastic deformation, so that the connection is tight. This form can be used in flammable, explosive, toxic media and places with high pressure, but the sealing performance is poor