High -pressure flange: French for pipeline or device connection for pressure higher than 10MPa.At present, it mainly includes traditional high -voltage flange and high -pressure self -tight flange.
What is high -pressure flange
High -pressure flange: Pipeline or device connect to a sealing cushion that is more than 10MPa is installed between the cover of the two flames. After tightening the nut, the comparison pressure on the surface of the sealing cushion reaches a certain value.The place is tightly.This form can be used for occasions with high flammable, explosive, toxic media and high pressure but poorly sealed reliability.
High -pressure flange model
The application of high -pressure flange is different, so its model is not a single type.The model of high-pressure flanges is JB/ZQ4485-86. This includes two types of B-type Frankfrains with a nominal pressure of 25MPa and the nominal pressure of 16MPa./ZQ, the outer diameter is usually 76mm, and the model B flange is B40/48-16JB/ZQ4485-86, and its outer diameter length is 48mm.
High -pressure flange material
The main material of traditional high -voltage flange is "steel" -a carbon steel, stainless steel and alloy steel.Among them, in the material of carbon steel, the use of carbon steel with a labeled 20#, Q235, and Q345 (mainly 16mn in the old national standard) is the most common; in stainless steel, the use of stainless steel with a labeled 304L, F316, 316L stainless steel is used.The maximum; in the alloy steel, the use of alloy steels of alloy steels of F9, F11, F12, 16MNR, and CR5MO is used.In addition, what to say is.At present, ceramic composite steel is gradually being used in the production of traditional high -voltage flange.In addition, the abrasion resistance of traditional high -voltage flange with ceramic composite steel as the main material is proven to be far higher than other materials than high -pressure flanges in the experiment.
High -pressure flange size
High -pressure flange refers to the flange that is connected to a pipe or device for pipes or devices greater than 10MPa, which mainly includes traditional high -pressure flanges and high -pressure self -tight flange.The sealing principles adopted by these two types of high -voltage flange are different, so the occasions of use are also different.There are many different models and specifications like other parts.
High -pressure flange standard
High -pressure flange is very important as an important equipment connected to various pipelines.Especially in important places such as petroleum mining, gas transportation, and environmental engineering, it is even more unparalleled.Therefore, the state has strict implementation standards for the production and manufacturing of high -pressure flange. Next, I will briefly introduce the standards of the flange.

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