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Home - Products -輸送流體用無縫鋼管

輸送流體用無縫鋼管

輸送流體用無縫鋼管

標準:
GB/T8163——中國國家標準
用途:
用于輸送流體用的一般無縫鋼管
主要生產鋼管牌號:
10、20、Q345 等

 

尺寸
公差:

 

鋼管種類

外徑(D)

鋼管壁厚(S)

冷拔管

鋼管外徑(mm)

允許偏差(mm)

鋼管壁厚(mm)

允許偏差(mm)

>30~50

±0.3

≤30

±10%

>50~219

±0.8%

熱軋管

>219

±1.0%

>20

±10%

 

力學性能:

標準

牌號

抗拉強度(MPa)

屈服強度(MPa)

伸長率(%)

GB/T8163

10

335~475

≥205

≥24

20

410~550

≥245

≥20

Q345

490~665

≥325

≥21

化學成分:

標準

牌號

化學成分(%)

C

Si

Mn

P

S

Cr

Ni

Cu

GB/T8163

10

0.07~0.14

0.17~0.37

0.35~0.65

≤0.035

≤0.035

≤0.15

≤0.25

≤0.25

20

0.17~0.24

0.17~0.37

0.35~0.65

≤0.035

≤0.035

≤0.25

≤0.25

≤0.25

Q345

0.12~0.20

0.20~0.55

1.20~1.60

≤0.045

≤0.045

/

/

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關鍵詞:

 

 
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