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ASTM A182 F1 Alloy Steel Slip On Flange B16.5 Pharmaceutical Equipment
A182 F1 is mainly used for manufacturing pressure vessel components and important forgings at -40 ℃ to 470 ℃.
A182 Grade F1 flange A182 Gr.F1 butt welding flange is a flange pipe with a neck, which is connected to a round steel pipe and connected to the middle of the pipeline through butt welding. It uses a relatively complex triangular structure, which is usually suitable for pipelines with significant changes in working pressure or temperature, as well as pipelines with high temperature, high pressure, and high temperature. It has characteristics such as low variability, good sealing function, moderate stiffness and ductility. Welding flange, also known as high neck flange, has a relatively high stiffness and is suitable for places with high working pressure and temperature. The mortise and tenon protruding surface is suitable for flammable, explosive, and harmful substances. A spiral wound gasket made of thin steel strip and asbestos strip coil inductance together. Generally, rubber pads are suitable for places with temperatures below 120 ℃; Asbestos rubber gaskets are suitable for places where the water vapor temperature is less than 450 ℃, the raw oil temperature is less than 350 ℃, and the working pressure is less than 5MPa.
The A182 Grade F1 flange is used for high-pressure equipment in crude oil pipelines and is a large cast steel component with small inner holes, large wall thickness, and high specified physical properties. In recent years, with the application of isothermal substances such as liquid hydrogen, liquid oxygen, and liquid helium, in the production, storage, transportation, and application of such warm substances, it is necessary to connect various machinery, equipment, pumps, and valves with pipeline system software to perform corresponding functions. In this system, the 20 # high-pressure flange is a connecting component, which is a common component used in high-pressure vessels and working pressure pipelines, and also a type of component with a wide variety of varieties.
A slip-on flange is connected to the pipe or the fittings by two fillet welds, one executed inside and one outside the cavity of the flange.
Slip-on flanges are also defined “Hubbed Flanges” and they are easy to recognize due to their slim and compact shape.
WELD NECK VS SLIP ON FLANGE
Flanged joints made with slip-on flanges are, in the long run, a bit more fragile than connections made with welding neck flanges (in similar service conditions). This seems due to the following facts:
a welding neck flange features a tapered hub, absent in a socket weld flange, which distributes the mechanical stress between the pipe and the flange more evenly
a welding neck joint as only one welding area instead of two (socket weld flange).
Another advantage of the welding neck flange is that it can be connected either to pipes and fittings, whereas socket weld flanges suit pipes only.
Chemical Composition of A182 F1 Alloy Steel Flanges
| Grade | C | Mn | Si | P | S | Cr | Mo |
| Alloy Steel F1 | 0.15 max | 0.3-0.6 | 0.5 | 0.03 | 0.03 | 4-6 | 0.44-0.65 |
Mechanical Properties of A182 F1 Alloy Steel Flanges
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % |
| A182 F1 | 275 | 485 | 20 |
| STANDARD | UNS | DIN WERKSTOFF NR. | DIN |
| Alloy F1 | K12822 | 1.5415 | 15M03 |
