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化肥设备用高压无缝钢管/高压锅炉用无缝钢管/地质管
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产品描述
结构用无缝钢管(GB/T8162)
中国标准:GB/T8162-2008
钢级:20,45,20Mn,Q345B,Q345C,Q345D,45Mn2, 27SiMn
交货状态:热轧
规格范围:外径73MM-630MM ,壁厚4MM-35MM
公差:按照GB/T8162-2008标准
长度:根据客户要求
证书:GB/T19001-2008
● 化学成分(熔炼分析)%
钢级
|
C
|
Si
|
Mn
|
P
|
S
|
Nb
|
V
|
Ti
|
Cr
|
Ni
|
Cu
|
N
|
Mo
|
B
|
Als
|
20
|
0.17-0.23
|
0.17-0.37
|
0.35-0.65
|
≤0.035
|
≤0.030
|
/
|
/
|
/
|
≤0.25
|
≤0.30
|
≤0.25
|
/
|
/
|
/
|
/
|
45
|
0.42-0.50
|
0.17-0.37
|
0.50-0.80
|
≤0.035
|
≤0.030
|
/
|
/
|
/
|
≤0.25
|
≤0.30
|
≤0.25
|
/
|
/
|
/
|
/
|
20Mn
|
0.17-0.23
|
0.07-0.37
|
0.70-1.00
|
≤0.035
|
≤0.030
|
/
|
/
|
/
|
≤0.25
|
≤0.30
|
≤0.25
|
/
|
/
|
/
|
/
|
Q345B
|
≤0.20
|
≤0.50
|
≤1.70
|
≤0.035
|
≤0.035
|
≤0.07
|
≤0.15
|
≤0.20
|
≤0.30
|
≤0.50
|
≤0.30
|
≤0.012
|
≤0.10
|
/
|
/
|
Q345C
|
≤0.20
|
≤0.50
|
≤1.70
|
≤0.035
|
≤0.030
|
≤0.07
|
≤0.15
|
≤0.20
|
≤0.30
|
≤0.50
|
≤0.30
|
≤0.012
|
≤0.10
|
/
|
≥0.015
|
Q345D
|
≤0.18
|
≤0.50
|
≤1.70
|
≤0.035
|
≤0.025
|
≤0.025
|
≤0.15
|
≤0.20
|
≤0.30
|
≤0.50
|
≤0.30
|
≤0.012
|
≤0.10
|
/
|
≥0.015
|
45Mn2
|
0.42-0.49
|
0.17-0.37
|
1.40-1.80
|
≤0.035
|
≤0.035
|
/
|
/
|
/
|
≤0.25
|
/
|
≤0.25
|
/
|
≤0.25
|
/
|
/
|
27SiMn
|
0.24-0.32
|
1.10-1.40
|
1.10-1.40
|
≤0.035
|
≤0.035
|
/
|
/
|
/
|
≤0.30
|
/
|
≤0.20
|
/
|
≤0.30
|
/
|
/
|
● 机械性能
钢级
|
屈服强度 min Mpa
|
抗拉强度
|
伸长率
|
冲击试验
|
|||
T in mm
|
Mpa
|
||||||
≤16
|
>16 ≤30
|
>30
|
|
温度/℃
|
冲击功/J
|
||
|
≥
|
||||||
20
|
245
|
235
|
225
|
≥410
|
≥20
|
-
|
-
|
45
|
335
|
325
|
315
|
≥590
|
≥14
|
-
|
-
|
20Mn
|
275
|
265
|
255
|
≥450
|
≥20
|
-
|
-
|
Q345B
|
345
|
325
|
295
|
470-630
|
≥20
|
20
|
34
|
Q345C
|
345
|
325
|
295
|
470-630
|
≥21
|
0
|
34
|
Q345D
|
345
|
325
|
295
|
470-630
|
≥21
|
-20
|
34
|
45Mn2
|
885
|
≥735
|
≥10
|
-
|
-
|
||
27SiMn
|
980
|
≥835
|
≥12
|
-
|
-
|
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