Product Descriptions:
Rolled steel with an H-shaped cross-section. Equal thickness in the two parallel flanges with no taper on the inside surface. Classified into narrow, medium, and wide, based on the height and flange width.
Product Parameters:

Classification (Height × Flange width)	Standard cross-section dimensions (mm)				Cross-sectional area(cm3）	Unit mass (kg/m)	Reference
							Second moment of area(cm4)		Radius of gyration of area(cm)		Section modulus(cm3)
	H×B	t1	t2	r			lx	ly	ix	iy	zx	zy
100×100	100×100	6	8	8	21.59	16.9	378	134	4.18	2.49	75.6	26.7
125×125	125×125	6.5	9	8	30.00	23.6	839	293	5.29	3.13	134	46.9
150×150	150×150	7	10	8	39.65	31.1	1620	563	6.4	3.77	216	75.1
175×175	175×175	7.5	11	13	51.43	40.4	2900	984	7.5	4.37	331	112
200×200	200×200 200×204	8 12	12 12	13 13	63.53 71.53	49.9 56.2	4720 4980	1600 1700	8.62 8.35	5.02 4.88	472 498	160 167
250×250	244×252 250×250 250×255	11 9 14	11 14 14	13 13 13	81.31 91.43 103.9	63.8 71.8 81.6	8700 10700 11400	2940 3650 3880	10.30 10.80 10.50	6.01 6.32 6.11	713.0 860.0 912.0	233.0 292.0 304.0
300×300	294×302 300×300 300×305	12 10 15	12 15 15	13 13 13	106.3 118.5 133.4	83.4 93.0 105.0	16600 20200 21300	5510 6750 7100	12.50 13.10 12.60	7.20 7.55 7.30	1130.0 1350.0 1420.0	365.0 450.0 466.0
350×350	344×348 344×354 350×350	10 16 12	16 16 19	13 13 13	144.0 164.6 171.9	113.0 129.0 135.0	32800 34900 39800	11200 11800 13600	15.10 14.60 15.20	8.84 8.48 8.89	1910.0 2030.0 2280.0	646.0 669.0 776.0
400×400	400×400	13	21	22	218.70	172.0	66600	22400	17.5	10.1	3330	1120