九江結(jié)構(gòu)用不銹鋼無縫鋼管-無縫鋼管尺寸規(guī)格表

九江結(jié)構(gòu)用不銹鋼無縫鋼管-無縫鋼管尺寸規(guī)格表

結(jié)構(gòu)用不銹鋼無縫鋼管（GB／T14975—1994）

外徑

壁厚

4.5

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

22

24

25

26

28

68

◎

◎

◎

◎

◎

◎

◎

◎

◎

70

◎

◎

◎

◎

◎

◎

◎

◎

◎

73

◎

◎

◎

◎

◎

◎

◎

◎

◎

76

◎

◎

◎

◎

◎

◎

◎

◎

◎

80

◎

◎

◎

◎

◎

◎

◎

◎

◎

83

◎

◎

◎

◎

◎

◎

◎

◎

◎

89

◎

◎

◎

◎

◎

◎

◎

◎

◎

95

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

102

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

108

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

114

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

121

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

127

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

133

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

140

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

146

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

152

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

159

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

168

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

180

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

194

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

219

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

245

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

237

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

325

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

351

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

377

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

426

◎

◎

◎

◎

◎

◎

◎

◎

◎

熱軋(擠、擴)鋼管				冷拔(軋)鋼管
尺寸／mm		允許偏差／mm		尺寸／mm		允許偏差／mm
		普通級	較高級			普通級	較高級
外徑D	68≤D≤159	±1.25	±1	外徑D	10≤D≤30	±0.30	±0.20
					30<D≤50	±0.40	±0.30
	159<D≤426	±1.5
					D>5	±0.9％	±0.8％
壁厚	<15	+15 -12.5	±12.5	壁厚	≤3	±14％	+12％ -10％
	≥15	+20 -15			>3	+12％ -10％	±10％

注：供機械加工用鋼管應在合同中注明，根據(jù)需方要求，經(jīng)供需雙方協(xié)議，可規(guī)定機械加工余量

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