I beam (chinese standard)

Item

Size(mm)

Theoretical weight(kg/m)

Middle hight(h)

Bottom width(b)

Middle width(d)

10

100

68

4.5

11.261

14

140

80

5.5

16.89

16

160

88

6

20.513

20a

200

100

7

27.929

20b

200

102

9

31.069

25a

250

116

8

38.105

25b

250

118

10

42.03

30a

300

126

9

48.084

30b

300

128

11

52.794

30c

300

130

13

57.504

45a

450

150

11.5

80.42

45b

450

152

13.5

87.485

45c

450

154

15.5

94.55

56a

560

166

12.5

106.316

56b

560

168

14.5

115.108

56c

560

170

16.5

123.9

63a

630

176

13

121.407

63b

630

178

15

131.298

63c

630

180

17

141.189