ASTM sets the standard of flanges (Flanges) of many standards and grades to choose to be suitable for the job type, fluid conditions, environmental conditions, temperature and operating pressure. As for determining the size, dimension, and class of the flange, it was in the past under the supervision of ANSI, but is currently under the responsibility of ASME.
Since flanges and Forged Steel Fittings have the same forming method of forming (forging), most of the materials are standardized under the same ASTM number, such as ASTM A 105 and ASTM A 182.
Standard material flanges carbon steel, alloy steel and stainless steel.
Carbon steel, alloy steel and stainless steel Produced according to ASTM standards that are widely used in the industry are as follows:
ASTM
| A 105 | Carbon steel forging for piping application. |
| A 181 | Carbon Steel Forging for General Purpose Piping. |
| A 182 | Forged or rolled alloy-steel pipe flanges, forged fittings, valves and parts for high-temperature service. |
Flanges under the JIS standards are both forged and made from steel plates. with abbreviations telling the following details
| SOP | slip-on Welding Plate Flange |
| soh | slip-on Welding Hub Flange |
| wn | Welding Neck Flange |
| BL | Blind Flange |
JIS standards related to the production methods, materials, dimensions and dimensions of carbon steel, alloy steel and stainless steel flanges are as follows:
jis
| B 2220 | Steel Welding Pipe Flanges. |
| B 2238 | General Rules for Steel Pipe Flanges. |
| B 2210 | revoked in 1997 and the JIS B 2238 and JIS B 2239 standards were used instead. |
