Knowledge of steel pipe and square steel specifications, models and weight tables

Side length（mm)	Sectional area(cm2)	Theoretical weight   (kg/m)		Side length（mm)	Sectional area(cm2)	Theoretical (kg/m)
5	0.25	0.196		30	9	7.06
6	0.36	0.283		32	10.24	8.04
7	0.49	0.385		34	11.56	9.07
8	0.64	0.502		36	12.96	10.17
9	0.81	0.636		38	14.44	11.24
10	1	0.785		40	16	12.56
11	1.21	0.95		42	17.64	13.85
12	1.44	1.13		45	20.25	15.9
13	1.69	1.33		48	23.04	18.09
14	1.96	1.54		50	25	19.63
15	2.25	1.77		53	28.09	22.05
16	2.56	2.01		56	31.36	24.61
17	2.89	2.27		60	36	28.26
18	3.24	2.54		63	39.69	31.16
19	3.61	2.82		65	42.25	33.17
20	4	3.14		70	49	38.49
21	4.41	3.46		75	56.25	44.16
22	4.84	3.8		80	64	50.24
24	5.76	4.52		85	72.25	56.72
25	6.25	4.91		90	81	63.59
26	6.76	5.3		95	90.25	70.85
28	7.84	6.15		100	100	78.5

Knowledge of steel pipe and square steel specifications, models and weight tables Note:

  (1) In standard parts, the cross-sectional area and weight of square steel with a side length of 105-250 mm are not listed.
If necessary, you can refer to the multiples of the table data for calculation.
  (2) The length of square steel is specified as follows:
    A. Normal length (non-fixed length):
                Ordinary steel:
            Side length≤25mm ……………………………………Length 5~10m
            Side length 26~50mm ………………………………………………Length 4~9m
            Side length 53~110mm …………………………………………Length 4~8m
            Side length≥120mm ….…………………………………………Length 3~6m
                High-quality steel:
            Various side length dimensions ………………………………………………Length 2~6m
    B. Fixed length (determined in the contract)
    C. Length of double ruler (determined in the contract)
    The delivery quantity of short-length square steel shall not exceed 10% of the total order quantity. Ordinary steel short ruler shall not be shorter than 2.5m, high-quality steel short ruler shall not be shorter than 1.5m.