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What are the application characteristics of high pressure flanges?

2022/09/30

High-pressure flanges are flanges used to connect pipes or equipment with a pressure greater than 10MPa. At present, it mainly includes traditional high-pressure flanges and high-pressure self-tightening flanges.

Traditional high pressure flanges: use plastic deformation of gaskets (oval pads, octagonal pads, lens pads, etc.) to connect to the pipe end, the parts where the pipe and the pipe are connected to each other, the flange has holes, and the stud bolts firmly connect the two flange.
High pressure flanges usually consist of a pair of flanges, a gasket and several bolts and nuts. The seal is installed between the two flange sealing faces, and tightening the nut will achieve a specific pressure on the sealing faces, causing the plastic to deform so that there is no void at the joint. This format can be used in flammable, explosive, toxic media and high pressure situations, but has poor sealing reliability.

What are the product characteristics of high pressure flanges?

1. The sealing principle belongs to plastic deformation.

2. Bolt connection

3. Bolts are subject to many external stresses such as tension, temperature difference stress, bending moment, and torque.

4. It is bulky and heavy, and it is very difficult to install and position it.

5. The sealing performance is unstable. Especially under severe conditions (high temperature, high pressure, and highly toxic medium), leakage is easy to occur, which leads to serious consequences.

What are the application characteristics of high pressure flanges?

High-pressure flanges are mainly used for pipeline installation, and high-pressure flange connection is an important connection method in pipeline construction, which mainly plays an important role and value in the connection between pipelines. High-pressure flange connection is to fix two pipes, pipe fittings or equipment on one flange respectively, add a flange gasket between the two flanges, and tighten them with bolts to complete the connection. Some accessories and equipment already have their own flanges and flange connections. High pressure flange product performance:

1. Wear resistance: The Al2O3 content in the lining ceramic layer of the ceramic composite steel pipe exceeds 95%, and the microscope is also HV1000-1500, with good wear resistance, more than 10 times higher than that of wear-resistant and durable medium carbon steel, and better than tungsten drill hard alloy.

2. Corrosive ceramics are neutral materials with stable chemical properties, excellent internal food properties and acid resistance, and can resist various inorganic acids, organic acids, organic solvents, etc., and their corrosion resistance is more than 10 times that of stainless steel.

What is the material of the high pressure flange?

Carbon Steel: ASTM A105, 20#, Q235, 16Mn, ASTM A350 lf1, lf2 cl1/Cl2, lf3 cl1/Cl2, ASTM

Stainless steel (STAIN ESSSSTEEL): ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8;

Alloy Steel: ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo Imported materials: (nickel steel), wc5 (chromium 1.25% 0.5% molybdenum steel), wc9 (Chromium 2.25%), C5 (Chromium 5% Molybdenum), C12 (9%; CF3M (316L stainless steel), CN7M (alloy steel), M35-1 (Monel), N7M (Hast Nickel Alloy B), CW6M (Hasta Nickel Alloy C), CY40 (Inconel).