Z channel
Introduction to Z Channel
Z-shaped steel is a common cold-formed thin-walled steel with a thickness generally between 1.6 and 3.0mm, and a cross-sectional height mostly between 120-350mm. The processing material is hot-rolled (painted) and galvanized. The processing standard shall be executed according to GB50018-2002. Z-shaped steel is usually used in large steel structure factories. The processing length and holes are produced according to the processing requirements.

Cross section view of Z-shaped steel
h- Height
b- Mid Flange
a-Small Flange
t-Thickness
Main parameters of Z-shaped steel
Name | Size(mm) | Inertia moment cm |
I Rotational half moment cm
|
Section modulus cm
|
|||||
h×b×c×t | h | b | c | t | lx | ly |
rv
|
wx
|
wy
|
100×40×20×2.0 | 100 | 40 | 20 | 2.0 | 60.62 | 17.2 |
1.256
|
12.12
|
40
|
100×40×20×2.5 | 100 | 40 | 20 | 2.5 | 73.05 | 20.32 |
1.234
|
14.61
|
55
|
120×50×20×2.0 | 120 | 50 | 20 | 2.0 | 107.77 | 30.51 | 1.519 | 17.96 | 67 |
120×50×20×2.5 | 120 | 50 | 20 | 2.5 | 130.7 | 36.36 | 1.497 | 21.78 | 77 |
120×50×20×3.0 | 120 | 50 | 20 | 3.0 | 152.11 | 41.55 | 1.474 | 25.35 | 86 |
140×50×20×2.5 | 140 | 50 | 20 | 2.5 | 188.5 | 36.36 | 1.503 | 26.93 | 7.458 |
140×50×20×3 | 140 | 50 | 20 | 3 | 219.8 | 41.55 | 1.48 | 31.47 | 8.567 |
160×60×20×2.5 | 160 | 60 | 20 | 2.5 | 290.3 | 58.78 | 1.767 | 36.29 | 10.00 |
160×70×20×2.5 | 160 | 70 | 20 | 2.5 | 321.4 | 88.57 | 2.014 | 40.17 | 12.88 |
160×70×20×3.0 | 160 | 70 | 20 | 3.0 | 376.9 | 102.3 | 1.99 | 47.11 | 17.94 |
180×70×20×2.5 | 180 | 70 | 20 | 2.5 | 422.9 | 88.58 | 2.028 | 46.99 | 12.88 |
180×70×20×3.0 | 180 | 70 | 20 | 3.0 | 496.7 | 102.3 | 2.003 | 55.19 | 14.94 |
200×70×20×2.5 | 200 | 70 | 20 | 2.5 | 541.5 | 88.58 | 2.03 | 54.15 | 12.88 |
230×75×25×3 | 230 | 75 | 25 | 3 | 951.37 | 138.9 | 2.212 | 82.73 | 18.90 |
250×75×25×3 | 250 | 75 | 25 | 3 | 1160.1 | 138.9 | 2.205 | 92.8 | 18.90 |
300×85×25×4 | 300 | 85 | 25 | 4 | - | - | - | - | - |
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