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Home - Products -输送流體(tǐ)用(yòng)无缝钢管

输送流體(tǐ)用(yòng)无缝钢管

输送流體(tǐ)用(yòng)无缝钢管

标准:
GB/T8163——中(zhōng)國(guó)國(guó)家标准
用(yòng)途:
用(yòng)于输送流體(tǐ)用(yòng)的一般无缝钢管
主要生产(chǎn)钢管牌号:
10、20、Q345 等

 

尺寸
公(gōng)差:

 

钢管种类

外径(D)

钢管壁厚(S)

冷拔管

钢管外径(mm)

允许偏差(mm)

钢管壁厚(mm)

允许偏差(mm)

>30~50

±0.3

≤30

±10%

>50~219

±0.8%

热轧管

>219

±1.0%

>20

±10%

 

力學(xué)性能(néng):

标准

牌号

抗拉强度(MPa)

屈服强度(MPa)

伸長(cháng)率(%)

GB/T8163

10

335~475

≥205

≥24

20

410~550

≥245

≥20

Q345

490~665

≥325

≥21

化學(xué)成分(fēn):

标准

牌号

化學(xué)成分(fēn)(%)

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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关键词:

 

 
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