MILD STEEL ROUND BARS
种类 Size	直径	重量 -Weight	Sectional Area
	mm	kg/m	cm2
6	6	0.222	0.2827
7	7	0.302	0.3848
8	8	0.395	0.5027
9	9	0.499	0.6362
10	10	0.617	0.7854
11	11	0.746	0.9503
12	12	0.888	1.131
13	13	1.04	1.327
14	14	1.21	1.539
15	15	1.39	1.767
16	16	1.58	2.011
17	17	1.78	2.270
18	18	2.00	2.545
19	19	2.23	2.835
20	20	2.47	3.142
21	21	2.72	3.464
22	22	2.98	3.801
23	23	3.26	4.155
24	24	3.55	4.524
25	25	3.85	4.909
26	26	4.17	5.309
27	27	4.49	5.726
28	28	4.83	6.158
29	29	5.18	6.605
30	30	5.55	7.069
31	31	5.93	7.548
32	32	6.31	8. 042
34	34	7.13	9.079
35	35	7.55	9.621
36	36	7. 99	10.18
38	38	8.90	11.34
40	40	9.87	12.57
42	42	10.9	13.85
44	44	11.9	15.21
46	46	13.0	16.62
48	48	14.2	18.10
50	50	15.4	19.63
55	55	18.7	23.76
60	60	22.2	28.27
65	65	26.0	33.18
70	70	30.2	38.48
75	75	34.7	44.18
80	80	39.5	50.27
85	85	44.5	56.75
90	90	49.9	63.62
95	95	55.6	70.88
100	100	61.7	78.54
105	105	68.0	86.59
110	110	74.6	95.03
115	115	81.6	103.9
120	120	88.8	113.1
125	125	96.3	122.7
130	130	104	132.7
135	135	112	143.1
140	140	121	153.9
145	145	130	165.1
150	150	139	176.7
160	160	158	201.1
170	170	178	227.0
180	180	200	254.5
190	190	223	283.5
200	200	247	314.2