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ភាសាខ្មែរMaybe you don’t know. That the flange dimensions are not the same as in other materials. For each standard, and each pressure class, the size of the flange is also different. DN50 flange example.
DN50 . Flange Specifications
Specifications of flanges made according to JIS B2220
JIS 5K. flange standard specification
JIS 10K. flange standard specification
IS 16K. flange standard specification
JIS 20K. flange standard specification
Specifications of flanges made according to DIN. standards
DIN 2576 – PN6. flange standard specification
DIN 2576 – PN10. flange standard specification
DIN 2544 – PN16. flange standard specification
DIN 2544 – PN25. flange standard specification
DIN 2544 – PN40. flange standard specification
Specifications for flanges made according to ANSI
Standard Specifications ANSI Series 150. Flange
Standard Specifications of the 300. Series ANSI Flanges
??? In addition to the 2 series 150 & 300 which are common goods, ANSI flanges also have other lines such as 400, 600, 900, 1500, and 2500. You can see more in the table below (Documents are quoted from the standard). ASME/ANSI B16.10/19).
| SERIES | PIPE SIZE (INCH) |
OUTER DIAMETER OF THE FLANGE (MM) |
OUTDOOR DIAMETER OF THE PIPE (MM) |
NUMBER OF BOLTS | DIAMETER BOLTS (MM) |
BOLT CIRCLE (MM) |
|---|---|---|---|---|---|---|
| 400 Series | 1/2 | 57,2 | 21,3 | 4,0 | 15,9 | 34,9 |
| 3/4 | 85,7 | 26,7 | 4,0 | 19,1 | 69,9 | |
| 1 | 79,4 | 33,5 | 4,0 | 19,1 | 63,5 | |
| 1-1 / 4 | 120,7 | 42,2 | 4,0 | 19,1 | 54,0 | |
| 1-1 / 2 | 149,2 | 48,3 | 4,0 | 22,2 | 88,9 | |
| 2 | 139,7 | 60,5 | 8,0 | 19,1 | 127,0 | |
| 2-1 / 2 | 165,1 | 73,2 | 8,0 | 22,2 | 104,8 | |
| 3 | 196,9 | 88,9 | 8,0 | 22,2 | 136,5 | |
| 3-1 / 2 | 228,6 | 101,6 | 8,0 | 25,4 | 171,5 | |
| 4 | 254,0 | 114,3 | 8,0 | 25,4 | 181,0 | |
| 5 | 279,4 | 141,2 | 8,0 | 25,4 | 222,3 | |
| 6 | 292,1 | 168,4 | 12,0 | 25,4 | 238,1 | |
| số 8 | 381,0 | 219,2 | 12,0 | 22,2 | 330,2 | |
| 10 | 419,1 | 273,1 | 16,0 | 19,1 | 374,7 | |
| 12 | 495,3 | 323,9 | 16,0 | 15,9 | 412,8 | |
| 14 | 584,2 | 355,6 | 20,0 | 15,9 | 501,7 | |
| 16 | 622,3 | 406,4 | 20,0 | 12,7 | 546,1 | |
| 18 | 711,2 | 457,2 | 24,0 | 12,7 | 590,6 | |
| 20 | 749,3 | 508,0 | 24,0 | 9,5 | 685,8 | |
| 24 | 914,4 | 609,6 | 24,0 | 3,2 | 812,8 | |
| 600 Series | 1/2 | 57,2 | 21,3 | 4,0 | 15,9 | 34,9 |
| 3/4 | 85,7 | 26,7 | 4,0 | 19,1 | 69,9 | |
| 1 | 79,4 | 33,5 | 4,0 | 19,1 | 63,5 | |
| 1-1/4 | 120,7 | 42,2 | 4,0 | 19,1 | 54,0 | |
| 1-1/2 | 149,2 | 48,3 | 4,0 | 22,2 | 88,9 | |
| 2 | 139,7 | 60,5 | 8,0 | 19,1 | 127,0 | |
| 2-1/2 | 165,1 | 73,2 | 8,0 | 22,2 | 104,8 | |
| 3 | 196,9 | 88,9 | 8,0 | 22,2 | 136,5 | |
| 3-1/2 | 228,6 | 101,6 | 8,0 | 25,4 | 171,5 | |
| 4 | 235,0 | 114,3 | 8,0 | 25,4 | 190,5 | |
| 5 | 330,2 | 141,2 | 8,0 | 19,1 | 241,3 | |
| 6 | 355,6 | 168,4 | 12,0 | 19,1 | 266,7 | |
| 8 | 393,7 | 219,2 | 12,0 | 19,1 | 311,2 | |
| 10 | 508,0 | 273,1 | 16,0 | 15,9 | 431,8 | |
| 12 | 558,8 | 323,9 | 20,0 | 15,9 | 476,3 | |
| 14 | 565,2 | 355,6 | 20,0 | 12,7 | 489,0 | |
| 16 | 685,8 | 406,4 | 20,0 | 9,5 | 565,2 | |
| 18 | 730,3 | 457,2 | 20,0 | 6,4 | 616,0 | |
| 20 | 812,8 | 508,0 | 24,0 | 6,4 | 698,5 | |
| 24 | 939,8 | 609,6 | 24,0 | 50,8 | 838,2 | |
| 900 Series | 1/2 | 82,6 | 21,3 | 4,0 | 22,2 | 69,9 |
| 3/4 | 123,8 | 26,7 | 4,0 | 22,2 | 63,5 | |
| 1 | 104,8 | 33,5 | 4,0 | 25,4 | 101,6 | |
| 1-1/4 | 146,1 | 42,2 | 4,0 | 25,4 | 92,1 | |
| 1-1/2 | 177,8 | 48,3 | 4,0 | 22,2 | 79,4 | |
| 2 | 190,5 | 60,5 | 8,0 | 25,4 | 139,7 | |
| 2-1/2 | 212,7 | 73,2 | 8,0 | 22,2 | 165,1 | |
| 3 | 215,9 | 88,9 | 8,0 | 22,2 | 165,1 | |
| 4 | 266,7 | 114,3 | 8,0 | 19,1 | 222,3 | |
| 5 | 311,2 | 141,2 | 8,0 | 15,9 | 279,4 | |
| 6 | 381,0 | 168,4 | 12,0 | 19,1 | 292,1 | |
| 8 | 444,5 | 219,2 | 12,0 | 12,7 | 368,3 | |
| 10 | 520,7 | 273,1 | 16,0 | 12,7 | 444,5 | |
| 12 | 609,6 | 323,9 | 20,0 | 12,7 | 533,4 | |
| 14 | 628,7 | 355,6 | 20,0 | 9,5 | 558,8 | |
| 16 | 666,8 | 406,4 | 20,0 | 6,4 | 603,3 | |
| 18 | 787,4 | 457,2 | 20,0 | 50,8 | 685,8 | |
| 20 | 819,2 | 508,0 | 20,0 | 47,6 | 723,9 | |
| 24 | 1041,4 | 609,6 | 20,0 | 34,9 | 876,3 | |
| ANSI B16.5 covers only sizes through 24″ | ||||||
| 26 | 1047,8 | 20,0 | 28,6 | 927,1 | ||
| 28 | 1168,4 | 20,0 | 73,0 | 1009,7 | ||
| 30 | 1206,5 | 20,0 | 73,0 | 1047,8 | ||
| 32 | 1276,4 | 20,0 | 66,7 | 1130,3 | ||
| 34 | 1397,0 | 20,0 | 60,3 | 1212,9 | ||
| 36 | 1435,1 | 20,0 | 60,3 | 1251,0 | ||
| 1500 Series | 1/2 | 82,6 | 21,3 | 4,0 | 22,2 | 69,9 |
| 3/4 | 123,8 | 26,7 | 4,0 | 22,2 | 63,5 | |
| 1 | 104,8 | 33,5 | 4,0 | 25,4 | 101,6 | |
| 1-1/4 | 146,1 | 42,2 | 4,0 | 25,4 | 92,1 | |
| 1-1/2 | 177,8 | 48,3 | 4,0 | 22,2 | 79,4 | |
| 2 | 190,5 | 60,5 | 8,0 | 25,4 | 139,7 | |
| 2-1/2 | 212,7 | 73,2 | 8,0 | 22,2 | 165,1 | |
| 3 | 241,3 | 88,9 | 8,0 | 19,1 | 203,2 | |
| 4 | 285,8 | 114,3 | 8,0 | 15,9 | 215,9 | |
| 5 | 336,6 | 141,2 | 8,0 | 9,5 | 266,7 | |
| 6 | 368,3 | 168,4 | 12,0 | 12,7 | 292,1 | |
| 8 | 482,6 | 219,2 | 12,0 | 6,4 | 368,3 | |
| 10 | 584,2 | 273,1 | 12,0 | 50,8 | 482,6 | |
| 12 | 647,7 | 323,9 | 16,0 | 47,6 | 546,1 | |
| 14 | 723,9 | 355,6 | 16,0 | 41,3 | 635,0 | |
| 16 | 800,1 | 406,4 | 16,0 | 34,9 | 666,8 | |
| 18 | 914,4 | 457,2 | 16,0 | 28,6 | 749,3 | |
| 20 | 946,2 | 508,0 | 16,0 | 73,0 | 793,8 | |
| 24 | 1168,4 | 609,6 | 16,0 | 60,3 | 990,6 | |
| 2500 Series | 1/2 | 120,7 | 21,3 | 4,0 | 22,2 | 63,5 |
| 3/4 | 114,3 | 26,7 | 4,0 | 22,2 | 57,2 | |
| 1 | 146,1 | 33,5 | 4,0 | 25,4 | 95,3 | |
| 1-1/4 | 171,5 | 42,2 | 4,0 | 22,2 | 123,8 | |
| 1-1/2 | 203,2 | 48,3 | 4,0 | 19,1 | 108,0 | |
| 2 | 222,3 | 60,5 | 8,0 | 22,2 | 133,4 | |
| 2-1/2 | 241,3 | 73,2 | 8,0 | 19,1 | 158,8 | |
| 3 | 304,8 | 88,9 | 8,0 | 15,9 | 228,6 | |
| 4 | 355,6 | 114,3 | 8,0 | 9,5 | 235,0 | |
| 5 | 393,7 | 141,2 | 8,0 | 3,2 | 285,8 | |
| 6 | 482,6 | 168,4 | 8,0 | 47,6 | 342,9 | |
| 8 | 514,4 | 219,2 | 12,0 | 47,6 | 425,5 | |
| 10 | 647,7 | 273,1 | 12,0 | 34,9 | 527,1 | |
| 12 | 762,0 | 323,9 | 12,0 | 28,6 | 600,1 | |
Flange Standard Specification BS 4504 – EN 1092
BS 4504 PN6. flange standard specification
Specifications of BS 4504 PN10. flange standard
Specifications of BS 4504 PN16. flange standard
Specification of BS 4504 PN25. flange standard
Specifications of standard flange BS 4504 PN40
Advantages and applications of flange DN50
Flange DN50 in particular and flanges in general have been and are important accessories in pipeline works.
They help the liquids and gases in the pipeline not to leak. The connection between the pipe segments with each other and with other fittings is tighter.
Re-installation is extremely easy, just weld the pipe and bolt to fix it. Especially in large pipes that are difficult to connect using threaded fittings.
As for DN50 flanges, you can find them in these works:
- Gas pipelines
- Oil pipelines
- Water pipeline
- On pressure vessels, boilers, …
Some applications of Flange DN50
Hopefully, the knowledge provided by Tiger Steel above will be useful to you. If you need to buy steel flanges, you can contact Tiger Steel.
In addition to flange products, “Tiger Steel” trades in black steel pipes, galvanized steel pipes, black box steels, galvanized Hoa Phat, SeAH, …; cast steel pipe, and large-diameter steel pipe. Steel pipe fittings of all kinds, fire protection accessories, …