Z Section

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The Z section, also known as Z-beam or Z profile steel, is common thin-walled cold-formed steel. The thickness is between 1.6-3.0mm, while the section height is mostly between 120-350mm. The processing includes hot-rolling (painting) and galvanizing, in line with the standard of GB50018-2002. The Z section is usually used in large steel structure plants.

Parameters

Specification	Dimension				Moment of Inertia cm 4		Radius of Gyration cm	Section Modulus cm4
h × b × c × t	h	b	c	t	lx	ly	rv	wx	wy
100 × 40 × 20 × 2.0	100	40	20	2	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	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	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
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	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	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	18.9
250 × 75 × 25 × 3	250	75	25	3	1160.1	138.9	2.205	92.8	18.9
300 × 85 × 25 × 4	300	85	25	4	－	－	－	－	－