标准

牌号

化学成分（％）

CEV（％）

C

Si

Mn

P

S

V

Nb

Ti

API SPEC 5L

　　GB/T9711.2

B

≤0.16

≤0.40

≤1.10

≤0.020

≤0.010

－

－

－

≤0.42

X42

≤0.17

≤0.40

≤1.20

≤0.020

≤0.010

≤0.05

≤0.05

≤0.04

≤0.42

X52

≤0.20

≤0.45

≤1.60

≤0.020

≤0.010

≤0.10

≤0.05

≤0.04

≤0.45

X60

≤0.21

≤0.45

≤1.60

≤0.020

≤0.010

≤0.15

≤0.05

≤0.04

协议

X65

≤0.16

≤0.45

≤1.60

≤0.020

≤0.010

≤0.06

≤0.05

≤0.06

≤0.45

X70

≤0.16

≤0.45

≤1.70

≤0.020

≤0.010

≤0.06

≤0.05

≤0.06

≤0.45

名义尺寸

　　Nominal Size

外径

　　Outside Diameter

壁厚

　　Wall Thickness

平端管米重

　　Plain-end Weight

inch

mm

inch

mm

lb/ft

kg/m

0.405

0.405

10.29

0.095

2.4

0.31

0.47

0.54

0.54

13.72

0.088

2.2

0.43

0.62

0.54

13.72

0.119

3.0

0.54

0.79

0.675

0.675

17.15

0.091

2.3

0.57

0.84

0.675

17.15

0.126

3.2

0.74

1.10

0.84

0.84

21.34

0.109

2.8

0.85

1.2, 8

0.84

21.34

0.147

3.7

1.09

1.61

1.05

1.05

26.67

0.113

2.9

1.13

1.70

1.05

26.67

0.154

3.9

1.48

2.19

1.315

1.315

33.4

0.133

3.4

1.68

2.52

1.315

33.4

0.179

4.6

2.17

3.21

1.660

1.660

42.2

0.145

3.7

2.72

3.43

1.660

42.2

0.191

4.9

3.00

4.51

1.900

1.660

42.2

0.382

9.7

5.22

7.77

1.900

48.3

0.145

3.7

2.72

4.07

1.900

48.3

0.200

5.1

3.63

5.43

1.900

48.3

0.400

10.2

6.41

9.58

2 3/8

2.375

60.3

0.109

2.8

2.64

3.97

2.375

60.3

0.125

3.2

3.00

4.51

2.375

60.3

0.141

3.6

6.36

5.03