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Gayatri Tubes manufacture the best quality of Alloy Steel F12 Flanges to its varied customers from different sectors of the world. Hence, we offer flanges of different shapes, face types, sizes, dimensions, specifications, and more. Common industries where flanges are widely used include petrochemical, piping system, thermal plants, chemical, pharmaceutical, and more. They are, however, main components of the oil and gas industry.
Here they serve as the main component of a piping system that provides a connection to pumps, pipes, valves, and other equipment. Their design and structure proffer easy modification, cleaning, and inspection. The connection is made via welding or screwing with the help of nuts and bolts. Also, a gasket is used along with the bolts to offer a tight connection.
In Petro and chemical industry, slip-on, socket weld, lap joint, threaded, welding neck, and blind, is used. The exception to these flanges is reducing, expander, weldoflange, long welding neck, orifice, and more. We manufacture both standard and special flanges. Weld neck, slip-on, lap joint, blind, socket-weld, and threaded flanges are commonly used in the oil and gas industries. The environment is very critical and thus extremely good flanges are required to perform a stable operation. Blind flanges blank off the piping ends, valves end and opening of pressure vessels. They have no bore and thus suitable to work in high pressure as well as temperature applications.
Threaded alloy steel F12 flanges are useful. They need no welding for making a connection to the pipe. Pipes with deeper thickness use threaded flanges that create an internal thread. A stub end with a lap joint is used along with a lap-joint flange without fastening to provide connection.
Alloy Steel F12 weld-neck flange has a tapered hub are useful in high-pressure environments. Applications, where repeat bending conditions exist these flanges, are particularly useful. On the other hand, to prevent leakage and amplify strength slip-on flange is useful. Socket-weld flanges have static strength. These flanges serve their purpose well in desired applications. Their performance is ensured by the test results that we conduct. Hardness, tensile strength, IGC, PMI and more tests of importance are performed.
| STANDARD | UNS | WERKSTOFF NR. |
| Alloy Steel F12 | K11562/K11564 | - |
| Specifications | ASTM A182 / ASME SA182 |
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Size | 1/2″NB TO 60″NB |
| Flange Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| DIN Flanges | DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673 |
| JIS Flanges | JIS B2220 5K, JIS B2220 10K, JIS B2220 16K, JIS B2220 20K |
| BS Flanges | BS4504 PN 6, BS 4504 PN 10, BS4504 PN 16, BS4504 PN 25, BS4504 PN 40, BS 4504 PN 64, BS 4504 PN 100, BS 4504 PN 160, BS 4504 PN 250, BS 10, BS Table D, BS Table E, BS Table F, BS Table H. |
| Grade | C | Mn | P | S | Si | Ni | Ch | Mo | Cb |
| F12 | 0.05-0.15 | 0.30-0.60 | 0.045 | 0.045 | 0.50 max | - | 0.80-1.25 | 0.44-0.65 | - |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| F12 | 415 | 220 | 20 | - | 121-174 |
