KS D3568 Structural Tubes
Standard : SPSR400 ,490,540,590
Application
1.city & industrial water
2.irrigation & agriculture water
3.oil & gas supply
4. sprinkler
5.fire hydrant,
6.ship piping etc.
Surface :black painting ,varnish painting, anti rust oil, hot galvanized, cold galvanized, 3PE etc .
Package: hexagonal bundled or loose packing.
Weight and Dimension(KS D 3568(STK) JIS G 3466(STK)
Diameter | weight | area | Moment inertia | Section modules | Radious of Gyration | |
AXB | Wall thickness | Kg/m | cm | cm4 | cm | cm |
20x20 | 1.2 1.6 | 0.697 0.872 | 0.865 1.123 | 0.53 0.67 | 0.52 | 0.769 0.751 |
25x25 | 1.2 | 0867 | 1.105 | 1 03 | 0.824 | 0.965 |
1.6 | 1.12 | 1.432 | 1 27 | 1.02 | 0.942 | |
30x30 | 12 | 1 06 | 1.345 | 1 83 | 1 22 | 1.17 |
1.6 | 1.38 | 1.752 | 2.31 | 1.54 | 1.15 | |
40x40 | 1.6 | 1.88 | 2.392 | 5.79 | 2.90 | 1.56 |
2.3 | 2.62 | 3.332 | 7.73 | 3.86 | 1.52 | |
50x50 | 1.6 | 2.38 | 3.032 | 11.7 | 4.68 | 1.96 |
2.3 | 3.34 | 4.252 | 15.9 | 6.34 | 1.93 | |
3.2 | 4.50 | 5.727 | 20.4 | 8.16 | 1.89 | |
60x60 | 1.6 | 2.88 | 3.672 | 20.7 | 689 | 2.37 |
2.3 | 406 | 5.172 | 28.3 | 9.44 | 2.34 | |
3.2 | 5.50 | 7.007 | 369 | 12.3 | 2.30 | |
75x75 | 1.6 | 3.64 | 4.632 | 41.3 | 11.0 | 2.99 |
2.3 | 5.14 | 6.552 | 57.1 | 15.2 | 2.95 | |
3.2 | 701 | 8.927 | 75.5 | 20.1 | 2.91 | |
4.5 | 9.55 | 12.17 | 986 | 26.3 | 2.85 | |
90x90 | 2.3 | 6.23 | 7.932 | 101 | 22.4 | 3.56 |
3.2 | 8.51 | 10.85 | 135 | 29.9 | 3.52 | |
100x100 | 2.3 | 695 | 8.852 | 140 | 27.9 | 3.97 |
3.2 | 9.52 | 12.13 | 187 | 37.5 | 3.93 | |
40 | 117 | 14.95 | 226 | 45.3 | 3.89 | |
4.5 | 13.1 | 16.67 | 249 | 49.9 | 3.87 | |
6.0 | 17.0 | 21.63 | 311 | 62.3 | 3.79 | |
125x125 | 3.2 | 12.0 | 15.33 | 376 | 60.1 | 4.95 |
4.5 | 16.6 | 21.17 | 506 | 80.9 | 4.89 | |
5.0 | 18.3 | 23.36 | 553 | 884 | 4.86 | |
6.0 | 21.7 | 27.63 | 641 | 103 | 4.82 | |
rectangle
diametion | weight | area | moment of inertia | Section modulus | redious of gyration | ||||
AXB | thickness | w | a | IX | IY | zx | zy | ix | iy |
mm | mm | kg/m | cm2 | cm4 | cm4 | cm3 | cm3 | cm | cm |
30x20 | 1.2 | 0.868 | 1.105 | 1.34 | 0.711 | 0.890 | 0.711 | 1.10 | 0802 |
16 | 1.124 | 1.4317 | 1.66 | 0.879 | 1.11 | 0.879 | 1.80 | 0784 | |
40x20 | 1.2 | 1.053 | 1.3453 | 2.73 | 0.923 | 1.36 | 0.923 | 1 42 | 0.828 |
1.6 | 1.357 | 1.7517 | 3.43 | 1.15 | 1.72 | 1.15 | 1.40 | 0 810 | |
50x30 | 1.6 | 1.88 | 2.392 | 7.96 | 3.60 | 3.18 | 2.40 | 1.82 | 1.23 |
2.3 | 2.62 | 3.332 | 10.6 | 4.76 | 4.25 | 3.17 | 1 79 | 1.20 | |
60x30 | 1.6 | 2.13 | 2.721 | 12.5 | 4.25 | 4 16 | 2.83 | 2.15 | 1.25 |
2.3 | 2.98 | 3.792 | 16 8 | 5.65 | 5.61 | 3.76 | 2.11 | 1.22 | |
3.2 | 3.99 | 5.082 | 21 4 | 7.08 | 7.15 | 4.72 | 2.05 | 1.18 | |
75x45 | 16 | 2.88 | 3.672 | 284 | 12 9 | 7.56 | 5.75 | 2.78 | 1.88 |
2.3 | 4.06 | 5.172 | 38.9 | 17.6 | 10 4 | 7.82 | 2.74 | 1.84 | |
3.2 | 5.50 | 7.007 | 508 | 22.8 | 13.5 | 10.1 | 2.69 | 1.80 | |
80x40 | 1.6 | 2.88 | 3.672 | 30.7 | 10.5 | 7.68 | 5.26 | 2.89 | 1.69 |
2.3 | 4.06 | 5.172 | 42.1 | 14.3 | 10.5 | 7.14 | 2.85 | 1.66 | |
3.2 | 5.50 | 7.007 | 54.9 | 18 4 | 13.7 | 9.21 | 2.80 | 1.62 | |
100x50 | 1.6 | 3.64 | 4.632 | 61.3 | 21.1 | 12.3 | 8.43 | 3.64 | 2.13 |
2.3 | 5.14 | 6.552 | 84.8 | 29.0 | 17.0 | 11.6 | 3.60 | 2.10 | |
3.2 | 7.01 | 8.927 | 112 | 380 | 22.5 | 15 2 | 3.55 | 2.06 | |
4.5 | 9.55 | 12.17 | 147 | 489 | 29.3 | 19.5 | 3.47 | 2.00 | |
125x75 | 2.3 | 6.95 | 8.852 | 192 | 87.5 | 30.6 | 23.3 | 4.65 | 3.14 |
3.2 | 9.52 | 12.13 | 257 | 117 | 141 | 31.1 | 4.60 | 3.10 | |
4.0 | 11.7 | 14.95 | 311 | 141 | 19.7 | 37.5 | 4.56 | 3.07 | |
4.5 | 13.1 | 16.67 | 342 | 155 | 54.8 | 41.2 | 4.53 | 3.04 | |
6.0 | 17 0 | 21.63 | 428 | 192 | 68.5 | 51.1 | 4.45 | 2.98 | |
150x75 | 3.2 | 10 8 | 13.73 | 402 | 137 | 53.6 | 36.6 | 5.41 | 3.16 |
150x100 | 3.2 | 12 0 | 15.33 | 488 | 262 | 65.1 | 52.5 | 5.64 | 4.14 |
4.5 | 16.6 | 21.17 | 658 | 352 | 87.7 | 704 | 5.58 | 4.08 | |
6.0 | 21 7 | 27.63 | 835 | 444 | 888 | 5.55 | 401 | ||
Mechanical Properties
Symbol of grade | Tensile test | ||
Tensile strength N/mnftkgf/innf) | Yield strength N/mmXkgf/miif) | Elongation(No.5 test piecet%)) | |
SPSR400 (STKR400) | Min 400 (Min. 400) | Min 245 (Min. 245) | Min 23 (Min. 23) |
SPSR490 | Min 490 | Min. 325 | Min 23 |
(STKR490) | (Min. 490) | (Min. 325) | (Min. 23) |
SPSR540 | Min, 540 | Min, 390 | Min, 20 |
SPSR590 | Min. 590 | Min. 440 | Min. 20 |
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