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X42,X52,X60,X65,X70管線管化學成分 |
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標準
|
牌號
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化學成分（%）
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CEV（%）
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|
|
|
|
|
|
|
|
C
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Si
|
Mn
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P
|
S
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V
|
Nb
|
Ti
|
|
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|
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API SPEC 5L
GB/T9711.2
|
B
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≤0.16
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≤0.40
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≤1.10
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≤0.020
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≤0.010
|
－
|
－
|
－
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≤0.42
|
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X42
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≤0.17
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≤0.40
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≤1.20
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≤0.020
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≤0.010
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≤0.05
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≤0.05
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≤0.04
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≤0.42
|
|
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X52
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≤0.20
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≤0.45
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≤1.60
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≤0.020
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≤0.010
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≤0.10
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≤0.05
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≤0.04
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≤0.45
|
|
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X60
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≤0.21
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≤0.45
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≤1.60
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≤0.020
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≤0.010
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≤0.15
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≤0.05
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≤0.04
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協議
|
|
|
X65
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≤0.16
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≤0.45
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≤1.60
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≤0.020
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≤0.010
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≤0.06
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≤0.05
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≤0.06
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≤0.45
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|
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X70
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≤0.16
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≤0.45
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≤1.70
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≤0.020
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≤0.010
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≤0.06
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≤0.05
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≤0.06
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≤0.45
|
|
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