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ភាសាខ្មែរWelding flanges are flanges that use welds to connect. Most of these flanges are hollow flanges, characterized by burrs or no burrs on the body.
Welding Flanges Specifications
Welding Flanges have many dimensions and many standards. So in this case we should do base on Flanges Table.
Specifications of flanges made according to JIS B2220
JIS 5K. flange standard specification
JIS 10K. flange standard specification
JIS 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 of 150. Series ANSI Flanges 
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
Application of welding flange
Welding flanges are commonly used in pipeline projects. You can find them at:
- Fire protection system
- Urban water supply system
- Oil transmission system
- Gas pipeline system
Some applications of welding flanges
Hopefully, the knowledge that Tiger Steel provides above will be useful to you. If you need to buy steel flanges, you can contact Tiger Steel.
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