|
Model
|
低溫用無縫、焊接鋼管
|
|
生產地
|
中國大陸、美國、韓國
|
|
標準
|
-
 ASTM
A333
|
|
牌號
|
-
Grade
1
-
Grade
3
-
Grade
4
-
Grade
6
-
Grade
7
-
Grade
8
-
Grade
9
-
Grade
10
-
Grade
11
|
|
|
|
|
衝擊溫度
|
|
級別
|
最低衝擊試驗溫度
|
|
℉
|
℃
|
|
Grade 1
|
-50
|
-45
|
|
Grade 3
|
-150
|
-100
|
|
Grade 4
|
-150
|
-100
|
|
Grade 6
|
-50
|
-45
|
|
Grade 7
|
-100
|
-75
|
|
Grade 8
|
-320
|
-195
|
|
Grade 9
|
-100
|
-75
|
|
Grade 10
|
-75
|
-60
|
|
|
力學性能 |
|
標準
|
牌號
|
抗拉強度 (MPa)
|
屈服強度 (MPa)
|
伸長率 (％)
|
|
縱向
|
橫向
|
|
ASTM A333
|
Grade 1
|
>=380
|
>=205
|
>=35
|
>=25
|
|
Grade 3
|
>=450
|
>=240
|
>=30
|
>=20
|
|
Grade 4
|
>=415
|
>=240
|
>=30
|
>=16.5
|
|
Grade 6
|
>=415
|
>=240
|
>=30
|
>=16.5
|
|
Grade 7
|
>=450
|
>=240
|
>=30
|
>=22
|
|
Grade 8
|
>=690
|
>=515
|
>=22
|
|
|
Grade 9
|
>=435
|
>=315
|
>=28
|
|
|
Grade 10
|
>=550
|
>=450
|
>=22
|
|
|
Grade 11
|
>=450
|
>=240
|
>=18
|
|
|
|
化學成分
|
|
標準
|
牌號
|
化學成分(%)
|
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Ni
|
Cu
|
Mo
|
V
|
Al
|
|
ASTM A333
|
Grade 1
|
<=0.30
|
|
0.40-1.06
|
<=0.025
|
<=0.025
|
|
|
|
|
|
|
|
Grade 3
|
<=0.19
|
0.18-0.37
|
0.31-0.64
|
<=0.025
|
<=0.025
|
|
3.18-3.82
|
|
|
|
|
|
Grade 4
|
<=0.12
|
0.18-0.37
|
0.50-1.05
|
<=0.025
|
<=0.025
|
0.44-1.01
|
0.47-0.98
|
0.40-0.75
|
|
|
0.04-0.30
|
|
Grade 6
|
<=0.30
|
>=0.10
|
0.29-1.06
|
<=0.025
|
<=0.025
|
|
|
|
|
|
|
|
Grade 7
|
<=0.19
|
0.13-0.32
|
<=0.90
|
<=0.025
|
<=0.025
|
|
2.03-2.57
|
|
|
|
|
|
Grade 8
|
<=0.13
|
0.13-0.32
|
<=0.90
|
<=0.025
|
<=0.025
|
|
8.40-9.60
|
|
|
|
|
|
Grade 9
|
<=0.20
|
|
0.40-1.06
|
<=0.025
|
<=0.025
|
|
1.60-2.24
|
0.75-1.25
|
|
|
|
|
Grade 10
|
<=0.20
|
0.10-0.35
|
1.15-1.50
|
<=0.03
|
<=0.015
|
<=0.15
|
<=0.25
|
<=0.015
|
<=0.50
|
<=0.12
|
<=0.06
|
|
Grade 11
|
<=0.10
|
<=0.35
|
<=0.6
|
<=0.025
|
<=0.025
|
<=0.50
|
35.0-37.0
|
|
<=0.50
|
|
|
|