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結構用無縫鋼管系列
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●標準
GB/T8162-2008， ISO2937， ASTM A53 ，ASTM A106，
JIS G 3441，BS EN 10210-1
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●用途:
使用范圍包括用于一般結構和機械結構，大量用于建筑、機械、交通、航空、石油開采等行業的各種結構管
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●尺寸公差
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標準
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外徑公差
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厚壁公差`
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GB/T 8162
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D<50
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±0.50mm
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S<4mm
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±12.5%
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D≥50
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±1%
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4-20mm
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+15/-12.5%
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S≥20mm
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±12.5%
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DIN1629
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D50
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±0.50mm
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S2Sn
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+15/-10%
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D48.3D48.3
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±1%
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2SnS4Sn
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+12.5/-10%
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S4Sn
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±9%
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ASTM A53
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D<48.3
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±0.4/-0.79mm
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±12.5%
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D≥48.3
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±1%
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ASTM A106
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D<48.3
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±0.4/-0.79mm
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±12.5%
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D48.3-114.3
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±0.79mm
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D≥114.3
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±1.59/-0.79mm
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●力學性能
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標準
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鋼級
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抗拉強度(MPa)
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屈服強度(MPa)
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延伸率
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<16mm
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16-30mm
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GB/T 8162
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10
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335
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205
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195
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24
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20
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390
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245
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235
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20
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35
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510
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305
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295
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17
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45
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590
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335
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325
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14
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16Mn
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490
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325
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315
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21
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DIN 1629
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<16mm
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>16mm
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ST35
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345-460
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235
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225
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25
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ST45
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440-550
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255
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245
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21
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ST55
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540-645
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295
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285
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17
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ST52
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490-630
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355
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345
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22
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ST45
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590-730
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335
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325
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14
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ASTM A53
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A
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330
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205
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B
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415
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240
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ASTM A106
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A
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330
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205
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B
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415
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240
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C
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485
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275
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●化學成分 (%):
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標準
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牌號
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C
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Si
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Mn
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P≤
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S≤
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Cu≤
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Ni≤
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Cr≤
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Mo≤
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V≤
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GB/T 8162
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10
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0.07-0.14
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0.17-0.37
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0.35-0.65
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0.035
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0.035
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0.25
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0.25
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0.15
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/
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/
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20
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0.17-0.24
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0.17-0.37
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0.35-0.65
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0.035
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0.035
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0.25
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0.25
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0.25
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/
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/
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35
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0.32-0.39
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0.17-0.37
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0.50-0.80
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0.035
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0.035
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0.25
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0.25
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0.25
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/
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/
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45
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0.42-0.50
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0.17-0.37
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0.50-0.80
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0.035
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0.035
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0.25
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0.30
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0.25
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/
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/
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16Mn
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0.12-0.20
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0.20-0.55
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1.20-1.60
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0.045
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0.045
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0.25
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0.25
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0.25
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/
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/
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DIN 1629
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St35
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≤0.18
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0.15-0.35
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0.35-0.65
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0.035
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0.035
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0.25
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0.25
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0.25
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/
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/
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St45
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≤0.25
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0.15-0.35
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0.50-0.80
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0.035
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0.035
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0.25
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0.25
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0.25
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/
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St55
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0.33-0.41
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0.15-0.35
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0.50-0.80
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0.035
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0.035
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0.25
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0.25
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0.25
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/
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/
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St52
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≤0.20
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≤0.55
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≤1.50
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0.035
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0.035
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0.25
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0.25
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0.25
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/
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/
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ASTM A53
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CK45
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0.42-0.50
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0.17-0.37
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0.50-0.80
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0.035
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0.035
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0.25
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0.25
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0.25
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/
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/
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ASTM A106
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A
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≤0.25
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/
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≤0.95
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0.05
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0.045
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0.40
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0.40
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0.40
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0.15
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0.08
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B
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≤0.30
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/
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≤1.20
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0.05
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0.06
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0.40
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0.40
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0.40
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0.15
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0.08
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A
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≤0.25
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≥0.10
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0.27-0.93
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0.035
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0.035
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0.40
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0.40
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0.40
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0.15
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0.08
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B
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≤0.30
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≥0.10
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0.29-1.06
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0.035
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0.035
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0.40
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0.40
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0.40
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0.15
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0.08
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C
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≤0.35
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≥0.10
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0.29-1.06
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0.035
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0.035
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0.40
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0.40
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0.40
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0.15
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0.08
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