我与么公激情完整视频_亚洲αⅴ无码天堂在线观看_涩涩视频污污成人版_成人免费毛片日韩毛片_国产精品性色综合av_中文字幕网站 五月网站_一级黄片大全_久久精品国产2020超碰_亚洲三级国产影视_av综合色区无码

廣州鋼結(jié)構(gòu)-清遠鋼結(jié)構(gòu)-佛山鋼構(gòu)-佛山市勝邦鋼結(jié)構(gòu)有限公司

11年鋼結(jié)構(gòu)廠房設計施工經(jīng)驗

1875套鋼構(gòu)建筑的共同選擇

服務咨詢熱線：

0757-81002668
4圓管
您的位置: 首頁 ->  圓管

圓管

圓管

Circular Steel Tube
With a hollow section, its length is far longer than the diameter or circumference of the steel. According to the cross section shape, it can be divided into round, square, rectangular and special type. According to the production process, it is divided into seamless steel pipe and welded steel pipe. There are hot rolling and cold rolling (drawing) two kinds of the seamless steel pipe. For welded steel pipe, there are straight seam welded steel pipe and spiral seam welded steel pipe. 

Hot rolled round steel (units) per meter scale 

Diameter(d) mm

Per area weight

Diameter(d) mm

Per area weight

5

0.15

31

5.93

5.5

0.19

32

6.31

6

0.22

33

6.71

6.5

0.26

34

7.13

7

0.3

35

7.55

8

0.4

36

7.99

9

0.5

38

8.9

10

0.62

40

9.87

11

0.75

42

10.87

12

0.89

45

12.48

13

1.04

48

14.21

14

1.21

50

15.42

15

1.39

52

16.67

16

1.58

53

17.32

17

1.78

55

18.65

18

2

56

19.33

19

2.23

58

20.74

20

2.47

60

22.19

21

2.72

63

24.47

22

2.98

65

26.05

23

3.26

68

28.51

24

3.55

70

30.21

25

3.85

75

34.68

26

4.17

80

39.46

27

4.49

85

44.55

28

4.83

 

 

29

5.18

 

 

30

5.55