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Model
|
套管、油管用無縫鋼管
|
|
生產地
|
中國大陸、美國、韓國
|
|
標準
|
-
 API
SPEC 5CT
|
|
牌號
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|
|
|
|
|
尺寸公差 |
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鋼管種類
|
外徑(D)
|
壁厚 (S)
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|
冷拔管
|
鋼管外徑(mm)
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允許偏差(mm)
|
允許偏差(mm)
|
|
< 114.3
|
±0.79
|
-12.50%
|
|
|
力學性能 |
|
標準
|
牌號
|
抗拉強度 (MPa)
|
屈服強度 (MPa)
|
伸長率 (％)
|
硬度
|
|
API SPEC 5CT
|
J55
|
>=517
|
379-552
|
查表
|
|
|
K55
|
>=517
|
>=655
|
|
|
N80
|
>=689
|
552-758
|
|
|
L80 (13Cr)
|
>=655
|
552-655
|
<=241HB
|
|
P110
|
>=862
|
758-965
|
|
|
|
化學成分 |
|
標準
|
牌號
|
化學成分（％）
|
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Ni
|
Cu
|
Mo
|
V
|
Als
|
|
API SPEC 5CT
|
J55K55
|
0.34-0.39
|
0.20-0.35
|
1.25-1.50
|
<=0.020
|
<=0.015
|
<=0.15
|
<=0.20
|
<=0.20
|
|
|
<=0.020
|
|
(37Mn5)
|
|
N80
|
0.34-0.38
|
0.20-0.35
|
1.45-1.70
|
<=0.020
|
<=0.015
|
<=0.15
|
|
|
|
0.11-0.16
|
<=0.020
|
|
(36 Mn2V)
|
|
L80(13Cr)
|
0.15-0.22
|
<=1.00
|
0.25-1.00
|
<=0.020
|
<=0.010
|
12.0-14.0
|
<=0.20
|
<=0.20
|
|
|
<=0.020
|
|
P110
|
0.26-0.35
|
0.17-0.37
|
0.40-0.70
|
<=0.020
|
<=0.010
|
0.80-1.10
|
<=0.20
|
<=0.20
|
0.15-0.25
|
<=0.08
|
<=0.020
|
|
(30CrMo)
|
|
|
|