| 1 | ANSI B16.11 | Pipe Flanges and Flanged Fittings |
| 2 | ANSI B 16.5 | Flanges |
| 3 | SABS 1123 | Flanges |
| 4 | ASME B 16.47 (SERIES A & B) | Large Dia Flanges |
| 5 | DIN | Flanges |
| 6 | BS 4504 | Flanges |
| 7 | ASTM A105 | Forging, Carbon Steel for piping components |
| 8 | ASTM A182 | Forged & Rolled Alloy Steel Pipe Flanges. Forged Fittings & Valves and parts for high-temperature services |
| 9 | ASTM A 350 | Carbon & Low Alloy Steel, requiring notch toughness testing for piping components |
| 10 | ASTM A 515 | Pressure Vessel Plates, Carbon Steel, for intermediate and higher-temperature services |
| 11 | ASTM A 516 | Pressure Vessel Plates: Carbon steel for Moderate and lower-temperature services |
| 12 | ASTM A 517 | Pressure Vessel Plates Alloy Steel High Strength Quenched & Tempered |
| 13 | ASTM A 333 | Seamless & Welded Steel Pipe for Low Temperature Services |
| 14 | ASTM A 335 | Seamless Ferritic Alloy Steel Pipes for High Temperature Services |
| 15 | JIS B 2220 | Steel pipe, flanges for various pressure ratings |
| 16 | EN 1092-1 | The European standard for circular flanges for pipes, valves, and fittings |
| 17 | BS10 | Flanges |
