|
标准
GB/T8163 China National Standard
ASTM A 53M Standard of American Society for Testing＆ Materials
ASTM A 106 Standard of American Society for Testing＆ Materials
用途：用于石油、天然气输送以及其他流体输送
交货状态：热轧
尺寸偏差
|
钢管种类
|
钢管尺寸mm
|
允许偏差
|
|
普通级
|
高级
|
|
热轧管
|
外径
OD
|
全部
|
±1%
最小Min：±0.50mm
|
—
|
|
壁厚
|
全部
|
+15.0%
-12.5%
最小Min：+0.45/-0.40 mm
|
—
|
注：也可按ASTM标准规定的偏差供货。
力学性能
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标准
|
牌号
|
抗拉强度
MPa
|
屈服点
MPa
|
断后伸长率
%
|
|
S≤16
|
S＞16
|
|
|
不小于
Not less than
|
|
GB/T8163
|
10
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335~475
|
205
|
195
|
24
|
|
20
|
410~550
|
245
|
235
|
20
|
|
Q295
|
430~610
|
295
|
285
|
22
|
|
Q345
|
490~665
|
325
|
315
|
21
|
|
ASTM A 53M
|
A
|
≥330
|
≥205
|
按ASTM A 53M的表3
|
|
B
|
≥415
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≥240
|
|
ASTM A106
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A
|
≥330
|
≥205
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按ASTM A 106的表4
|
|
B
|
≥415
|
≥240
|
|
C
|
≥485
|
≥275
|
牌号及化学成份（%）
|
标准
|
牌号
|
C
|
Si
|
Mn
|
P≤
|
S≤
|
Ni
|
Cr
|
Cu≤
|
Mo
|
V
|
Al
|
|
GB/T8163
|
10
|
0.07~0.13
|
0.17~0.37
|
0.35~0.65
|
0.035
|
0.035
|
≤0.30
|
≤0.15
|
0.25
|
——
|
——
|
——
|
|
20
|
0.17~0.23
|
0.17~0.37
|
0.35~0.65
|
0.035
|
0.035
|
≤0.30
|
≤0.25
|
0.25
|
——
|
——
|
——
|
|
Q295（A、B）
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≤0.16
|
≤0.55
|
0.80~1.50
|
0.035
|
0.035
|
Ti：0.02~0.20
|
——
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Nb：0.015~0.060
|
0.02~0.15
|
——
|
|
Q345A
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≤0.20
|
≤0.55
|
1.00~1.60
|
0.035
|
0.035
|
Ti：0.02~0.20
|
——
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Nb：0.015~0.060
|
0.02~0.15
|
——
|
|
Q345B
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≤0.20
|
≤0.55
|
1.00~1.60
|
0.035
|
0.035
|
Ti：0.02~0.20
|
——
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Nb：0.015~0.060
|
0.02~0.15
|
——
|
|
Q345C
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≤0.20
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≤0.55
|
1.00~1.60
|
0.035
|
0.035
|
Ti：0.02~0.20
|
——
|
Nb：0.015~0.060
|
0.02~0.15
|
≥0.015
|
|
Q345D
|
≤0.18
|
≤0.55
|
1.00~1.60
|
0.030
|
0.030
|
Ti：0.02~0.20
|
——
|
Nb：0.015~0.060
|
0.02~0.15
|
≥0.015
|
|
Q345E
|
≤0.18
|
≤0.55
|
1.00~1.60
|
0.025
|
0.025
|
Ti：0.02~0.20
|
——
|
Nb：0.015~0.060
|
0.02~0.15
|
≥0.015
|
|
ASTM A 53M
|
A
|
≤0.25
|
——
|
≤0.95
|
0.035
|
0.035
|
≤0.40
|
≤0.40
|
0.40
|
≤0.15
|
≤0.08
|
——
|
|
B
|
≤0.30
|
——
|
≤1.20
|
0.035
|
0.035
|
≤0.40
|
≤0.40
|
0.40
|
≤0.15
|
≤0.08
|
——
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|
ASTM A106
|
A
|
≤0.25
|
≥0.10
|
0.27~0.93
|
0.035
|
0.035
|
≤0.40
|
≤0.40
|
0.40
|
≤0.15
|
≤0.08
|
——
|
|
B
|
≤0.30
|
≥0.10
|
0.29~1.06
|
0.035
|
0.035
|
≤0.40
|
≤0.40
|
0.40
|
≤0.15
|
≤0.08
|
——
|
|
C
|
≤0.35
|
≥0.10
|
0.29~1.06
|
0.035
|
0.035
|
≤0.40
|
≤0.40
|
0.40
|
≤0.15
|
≤0.08
|
——
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|
