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%
|
标准
|
牌号
|
抗拉强度(MPa)
|
屈服强度(MPa)
|
伸长率(%)
|
GB/T8162
|
10
|
≥335
|
≥205
|
≥24
|
20
|
≥390
|
≥245
|
≥20
|
|
35
|
≥510
|
≥305
|
≥17
|
|
45
|
≥590
|
≥335
|
≥14
|
|
Q345
|
≥490
|
≥325
|
≥21
|
|
15CrMo
|
≥440
|
≥295
|
≥22
|
|
12Cr1MoV
|
≥490
|
≥245
|
≥22
|
|
ASTM A53
ASME SA53
|
A
|
≥330
|
≥205
|
查看ASTM A53的表
查看ASME SA53的表
|
B
|
≥415
|
≥240
|
标准
|
牌号
|
化学成分(%)
|
|||||||||
C
|
Si
|
Mn
|
P
|
S
|
Cu
|
Ni
|
Mo
|
Cr
|
V
|
||
GB/T8162
|
10
|
0.07~0.14
|
0.17~0.37
|
0.35~0.65
|
≤0.035
|
≤0.035
|
≤0.25
|
≤0.25
|
/
|
≤0.15
|
/
|
20
|
0.17~0.24
|
0.17~0.37
|
0.35~0.65
|
≤0.035
|
≤0.035
|
≤0.25
|
≤0.25
|
/
|
≤0.25
|
/
|
|
35
|
0.32~0.40
|
0.17~0.37
|
0.50~0.80
|
≤0.035
|
≤0.035
|
≤0.25
|
≤0.25
|
/
|
≤0.25
|
/
|
|
45
|
0.42~0.50
|
0.17~0.37
|
0.50~0.80
|
≤0.035
|
≤0.035
|
≤0.25
|
≤0.25
|
/
|
≤0.25
|
/
|
|
Q345
|
0.12~0.20
|
0.20~0.55
|
1.20~1.60
|
≤0.035
|
≤0.035
|
≤0.25
|
≤0.25
|
/
|
≤0.25
|
/
|
|
15CrMo
|
0.12~0.18
|
0.17~0.37
|
0.40~0.70
|
≤0.035
|
≤0.035
|
≤0.25
|
≤0.30
|
0.40~0.55
|
0.80~1.10
|
/
|
|
12Cr1MoV
|
0.08~0.15
|
0.17~0.37
|
0.40~0.70
|
≤0.035
|
≤0.035
|
≤0.25
|
≤0.30
|
0.25~0.35
|
0.90~1.20
|
0.15~0.30
|
|
ASTMA53
ASMESA53
|
A
|
≤0.25
|
/
|
≤0.95
|
≤0.05
|
≤0.06
|
≤0.40
|
≤0.40
|
≤0.15
|
≤0.40
|
≤0.08
|
B
|
≤0.30
|
/
|
≤1.20
|
≤0.05
|
≤0.06
|
≤0.40
|
≤0.40
|
≤0.15
|
≤0.40
|
≤0.08
|