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- Bulb Flat
Bulb Flat
Bulb Flat Profiles
Bulb flat profiles, also known as Dutch profiles, are structural steel sections widely used in the shipbuilding industry. They serve as an ideal alternative to angle bars, flat bars, and plates, offering superior reinforcement in structural applications.
Thanks to their rounded edges, high buckling resistance, and excellent corrosion performance, bulb flats eliminate the need for edge grinding before painting—resulting in significant time and cost savings. The unique bulb-shaped protrusion along one edge increases their structural strength, making them especially suitable for stiffening plates and decks.
Bulb Flat Steel Grades
Normal Strength Grades: A, B, D, E
High Strength Grades: AH32, DH32, EH32, AH36, DH36, EH36, DH40, EH40, FH32, F36, FH40
These profiles are typically referred to as shipbuilding steel profiles or simply as ship steel flats, especially when produced in Grade A, AH32, and AH36 qualities, which are the most commonly used in maritime applications.
Bulb Flat Weight, Bulb Flat Dimensions, Bulb Flat Weight Table, Bulb Flat Weight Calculator
| b | t | c | r | Kesit | Metrik | Yüzey | dx | lxx | Wxx |
Ölçü | (mm) | (mm) | (mm) | (mm) | (cm²) | Ağırlık | Alanı | (cm) | (cm4) | (cm³) |
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| (kg/m) | (m²/m) |
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60 x 4 | 60 ±1,5 | 4 +0,7 / -0,3 | 13 | 3,5 | 3,58 | 2,81 | 0.146 | 3,82 | 12,2 | 3,2 |
60 x 5 | 60 ±1,5 | 5 +0,7 / -0,3 | 13 | 3,5 | 4,18 | 3,28 | 0.148 | 3,7 | 14,4 | 3,89 |
60 x 6 | 60 ±1,5 | 6 +0,7 / -0,3 | 13 | 3,5 | 4,78 | 3,75 | 0.150 | 3,62 | 16,4 | 4,55 |
80 x 5 | 80 ±1,5 | 5 +0,7 / -0,3 | 14 | 4 | 5,41 | 4,25 | 0.189 | 4,9 | 33,87 | 6,91 |
80 x 6 | 80 ±1,5 | 6 +0,7 / -0,3 | 14 | 4 | 6,21 | 4,88 | 0.191 | 4,78 | 38,7 | 8,15 |
80 x 7 | 80 ±1,5 | 7 +0,7 / -0,3 | 14 | 4 | 7 | 5,5 | 0.194 | 4,69 | 43,3 | 9,24 |
80 x 8 | 80 ±1,5 | 8 +0,7 / -0,3 | 14 | 4 | 7,8 | 6,12 | 0.196 | 4,62 | 48 | 10,39 |
100 x 6 | 100 ±1,5 | 6 +0,7 / -0,3 | 15,5 | 4,5 | 7,74 | 6,08 | 0.234 | 5,98 | 76,1 | 12,7 |
100 x 7 | 100 ±1,5 | 7 +0,7 / -0,3 | 15,5 | 4,5 | 8,74 | 6,86 | 0.236 | 5,87 | 85,3 | 14,5 |
100 x 8 | 100 ±1,5 | 8 +0,7 / -0,3 | 15,5 | 4,5 | 9,74 | 7,65 | 0.238 | 5,78 | 94,3 | 16,3 |
120 x 6 | 120 ±1,5 | 6 +0,7 / -0,3 | 17 | 5 | 9,32 | 7,32 | 0.276 | 7,21 | 133 | 18,5 |
120 x 7 | 120 ±1,5 | 7 +0,7 / -0,3 | 17 | 5 | 10,52 | 8,26 | 0.278 | 7,07 | 149 | 21 |
120 x 8 | 120 ±1,5 | 8 +0,7 / -0,3 | 17 | 5 | 11,72 | 9,2 | 0.280 | 6,96 | 165 | 23,6 |
140 x 7 | 140 ±2 | 7 +1 / -0,3 | 19 | 5,5 | 12,43 | 9,75 | 0.320 | 8,32 | 241 | 29 |
140 x 8 | 140 ±2 | 8 +1 / -0,3 | 19 | 5,5 | 13,83 | 10,85 | 0.322 | 8,18 | 266 | 32,5 |
140 x 9 | 140 ±2 | 9 +1 / -0,3 | 19 | 5,5 | 15,2 | 11,9 | 0.324 | 8,07 | 291 | 36 |
160 x 7 | 160 ±2 | 7 +1 / -0,3 | 22 | 6 | 14,6 | 11,46 | 0.365 | 9,55 | 373 | 38,6 |
160 x 8 | 160 ±2 | 8 +1 / -0,3 | 22 | 6 | 16,2 | 12,72 | 0.367 | 9,5 | 411 | 43,9 |
160 x 9 | 160 ±2 | 9 +1 / -0,3 | 22 | 6 | 17,8 | 13,97 | 0.369 | 9,37 | 449 | 47,9 |
180 x 8 | 180 ±2 | 8 +1 / -0,3 | 25 | 7 | 18,86 | 14,8 | 0.411 | 10,89 | 609 | 55,9 |
180 x 9 | 180 ±2 | 9 +1 / -0,3 | 25 | 7 | 20,86 | 16,22 | 0.413 | 10,73 | 664 | 61,8 |
180 x 10 | 180 ±2 | 10 +1 / -0,3 | 25 | 7 | 22,46 | 17,63 | 0.415 | 10,59 | 717 | 67,7 |
180 x 11 | 180 ±2 | 11 +1 / -0,3 | 25 | 7 | 24,26 | 19,04 | 0.417 | 10,47 | 770 | 73,5 |
200 x 9 | 200 ±3 | 9 +1 / -0,4 | 28 | 8 | 23,66 | 18,57 | 0.457 | 12,12 | 942 | 77,7 |
200 x 10 | 200 ±3 | 10 +1 / -0,4 | 28 | 8 | 25,66 | 20,14 | 0.459 | 11,96 | 1017 | 85,1 |
200 x 11 | 200 ±3 | 11 +1 / -0,4 | 28 | 8 | 27,66 | 21,71 | 0.461 | 11,82 | 1091 | 92,3 |
200 x 12 | 200 ±3 | 12 +1 / -0,4 | 28 | 8 | 29,66 | 23,28 | 0.463 | 11,69 | 1164 | 99,5 |
220 x 10 | 220 ±3 | 10 +1 / -0,4 | 31 | 9 | 29 | 22,77 | 0.503 | 13,35 | 1396 | 105 |
220 x 11 | 220 ±3 | 11 +1 / -0,4 | 31 | 9 | 31,2 | 24,5 | 0.506 | 13,19 | 1496 | 114 |
220 x 12 | 220 ±3 | 12 +1 / -0,4 | 31 | 9 | 33,4 | 26,22 | 0.507 | 13,04 | 1595 | 122 |
240 x 10 | 240 ±3 | 10 +1 / -0,4 | 34 | 10 | 32,49 | 25,5 | 0.547 | 14,77 | 1865 | 126 |
240 x 11 | 240 ±3 | 11 +1 / -0,4 | 34 | 10 | 34,89 | 27,39 | 0.549 | 14,58 | 1997 | 137 |
240 x 12 | 240 ±3 | 12 +1 / -0,4 | 34 | 10 | 37,29 | 29,27 | 0.551 | 14,42 | 2127 | 148 |
260 x 10 | 260 ±3 | 10 +1 / -0,4 | 37 | 11 | 36,11 | 28,35 | 0.591 | 16,22 | 2434 | 150 |
260 x 11 | 260 ±3 | 11 +1 / -0,4 | 37 | 11 | 38,71 | 30,39 | 0.593 | 16 | 2605 | 163 |
260 x 12 | 260 ±3 | 12 +1 / -0,4 | 37 | 11 | 41,31 | 32,43 | 0.595 | 15,81 | 2774 | 175 |
280 x 11 | 280 ±3 | 11 +1 / -0,4 | 40 | 12 | 42,68 | 33,5 | 0.637 | 17,44 | 3333 | 191 |
280 x 12 | 280 ±3 | 12 +1 / -0,4 | 40 | 12 | 45,48 | 35,7 | 0.639 | 17,23 | 3647 | 206 |
280 x 13 | 280 ±3 | 13 +1 / -0,4 | 40 | 12 | 48,28 | 37,9 | 0.641 | 17,04 | 3757 | 221 |
300 x 11 | 300 ±3 | 11 +1,2 / -0,4 | 43 | 13 | 46,78 | 36,7 | 0.681 | 18,9 | 4192 | 222 |
300 x 12 | 300 ±3 | 12 +1,2 / -0,4 | 43 | 13 | 49,79 | 39,09 | 0.683 | 18,7 | 4459 | 239 |
300 x 13 | 300 ±3 | 13 +1,2 / -0,4 | 43 | 13 | 52,79 | 41,44 | 0.685 | 18,45 | 4722 | 256 |
320 x 12 | 320 ±4 | 12 +1,2 / -0,4 | 46 | 14 | 54,25 | 42,6 | 0.728 | 20,12 | 5525 | 275 |
320 x 13 | 320 ±4 | 13 +1,2 / -0,4 | 46 | 14 | 57,45 | 45,09 | 0,73 | 19,89 | 5849 | 294 |
320 x 14 | 320 ±4 | 14 +1,2 / -0,4 | 46 | 14 | 60,85 | 47,6 | 0.732 | 19,68 | 6168 | 313 |
340 x 12 | 340 ±4 | 12 +1,2 / -0,4 | 49 | 15 | 58,84 | 46,2 | 0.772 | 21,69 | 6,757 | 313 |
340 x 13 | 340 ±4 | 13 +1,2 / -0,4 | 49 | 15 | 62,24 | 48,86 | 0.774 | 21,34 | 7,152 | 335 |
340 x 14 | 340 ±4 | 14 +1,2 / -0,4 | 49 | 15 | 65,54 | 51,5 | 0.776 | 21,1 | 7,54 | 357 |
370 x 13 | 370 ±4 | 13 +1,2 / -0,4 | 53,5 | 16,5 | 69,7 | 54,7 | 0.840 | 23,54 | 9,469 | 402 |
370 x 14 | 370 ±4 | 14 +1,2 / -0,4 | 53,5 | 16,5 | 73,4 | 57,6 | 0.842 | 23,29 | 9,98 | 429 |
370 x 15 | 370 ±4 | 15 +1,2 / -0,4 | 53,5 | 16,5 | 77,1 | 60,5 | 0.844 | 23,06 | 10,483 | 456 |
400 x 14 | 400 ±4 | 14 +1,2 / -0,4 | 58 | 18 | 81,48 | 63,96 | 0.908 | 25,49 | 12,924 | 507 |
400 x 15 | 400 ±4 | 15 +1,2 / -0,4 | 58 | 18 | 85,48 | 67,1 | 0.910 | 25,24 | 13,573 | 538 |
400 x 16 | 400 ±4 | 16 +1,2 / -0,4 | 58 | 18 | 89,48 | 70,2 | 0.912 | 25 | 14,211 | 568 |
430 x 14 | 430 ±4 | 14 +1,2 / -0,4 | 62,5 | 19,5 | 89,7 | 70,6 | 0.975 | 27,7 | 16,46 | 594 |
430 x 15 | 430 ±4 | 15 +1,2 / -0,4 | 62,5 | 19,5 | 94,19 | 73,9 | 0.976 | 27,46 | 17,249 | 629 |
430 x 17 | 430 ±4 | 17 +1,2 / -0,4 | 62,5 | 19,5 | 102,79 | 80,7 | 0.980 | 26,95 | 18,853 | 700 |
430 x 19 | 430 ±4 | 19 +1,2 / -0,4 | 62,5 | 19,5 | 111,39 | 87,4 | 0.984 | 26,53 | 20,413 | 770 |
430 x 20 | 430 ±4 | 20 +1,2 / -0,4 | 62,5 | 19,5 | 115 | 90,8 | 0.986 | 26,3 | 21,18 | 804 |
