High quality carbon structural steel, alloy structural steel and stainless heat resistant steel high pressure seamless pipe for steam boiler pipelines under high pressure and above pressure

No

Grade

Chemical Component %

C

Si

Mn

Cr

Mo

Ni

Nb

Ti

V

Cu

P

S

≤

High quality carbon structural steel

10

0. 07-0.13

0.17 -0. 37

0.35 -0.65

<0.15

<0.15

<0. 25

—

—

<0. 08

<0. 20

0. 025

0. 015

20

0.17-0. 23

0.17 -0. 37

0.35 -0.65

<0. 25

<0.15

<0. 25

—

—

<0. 08

<0. 20

0. 025

0. 015

Alloy structural steel

12CrMo

0. 08-0.15

0.17 -0.37

0. 40-0. 70

0. 40-0. 70

0. 40 -0.55

<0. 30

—

—

一

<0. 20

0. 025

0. 015

15CrMo

0.12 -0.18

0.17-0. 37

0.40 -0. 70

0. 80-1.1

0. 40-0.55

<0. 30

—

—

一

<0. 20

0. 025

0. 015

12CrlMo

0. 08 -0.15

0.50 -1. 00

0. 30-0.6

1.00-1. 50

0.45 -0.65

<0. 30

—

—

—

<0, 20

0. 025

0. 015

12CrlMoV

0. 08-0.15

0.17-0. 37

0. 40-0. 70

0.90-1.2

0. 25 -0.35

<0. 30

—

—

0.15 -0. 30

<0. 20

0.025

0. 010

12Cr2Mo

0.08-0.15

<0. 50

0. 40-0. 60

2. 00-2. 50

0. 90-1.13

<0. 30

—

—

一

<0. 20

0. 025

0. 015

12Cr5MoI

<0.15

<0. 50

0.30-0.6

4. 00-6

0. 45 -0. 60

<0. 60

—

—

<0. 20

0. 025

0. 015

12Cr5MoNT

12Cr9MoI

<0.15

0. 25-1. 00

0. 30-0. 60

8.00 -10. 00

0. 90-1.1

<0. 60

—

—

—

<0. 20

0. 025

0, 015

12Cr9MoNT

Stainless heat resistant steel

07Crl9Nil0

0. 04-0.1

<1. 00

<2. 00

18. 00-20. 00

—

8. 00-11

—

—

—

—

0. 030

0. 015

07Crl8NillNb

0. 04-0.1

<1. 00

<2. 00

17. 00-19. 00

—

9.00-12. 00

8C-1.1

—

—

—

0. 030

0. 015

07Crl9NillTi

0. 04-0.1

<0. 75

<2. 00

17.00-20. 00

—

9. 00~13. 00

—

4C-0. 60

一

一

0.03

0. 015

022Crl7Nil2Mo2

<0. 030

<1. 00

<2. 00

16. 00-18. 00

2. 00-3. 00

10. 00 -14. 00

—

一

一

—

0.03

0. 015