CCS Pressure Steel Pipes and Tubes

Grade

Ⅰ

Ⅱ

Ⅲ

Media

Design Pressure

MPa

Design Temperature

℃

Design Pressure

MPa

Design Temperature

℃

Design Pressure

MPa

Design Temperature

℃

>

-

≤

Steam and hot oil

1.6

300

0.7~1.6

170~300

0.7

170

Fuel oil

1.6

150

0.7~1.6

60~150

0.7

60

Other media

4.0

300

1.6~4.0

200~300

1.6

200

Note

1. When a pipe’s design temperature or design pressure meets requirements for gradeⅠon table A , the pipe will be certified as gradeⅠpipe. When a pipe’s design temperature and design pressure both meets requirements for gradeⅡ on table A , the pipe will be certified as grade Ⅱ pipe.

2. Other media refer to air, water, lubricating oil, hydraulic oil...

3. Grade Ⅲ pipes can be made according to national standards agreed by CCS.

Steel Grade

Chemical Composition  %

C

Si

Mn

S

P

Residual Elements

Cr

Mo

Ni

Cu

gross

320

≤0.16

-

0.40~0.70

≤0.020

≤0.025

≤0.25

≤0.10

≤0.30

≤0.30

≤0.70

360

≤0.17

≤0.35

0.40~0.80

410

≤0.21

≤0.35

0.40~1.20

460

≤0.22

≤0.35

0.80~1.20

490

≤0.23

≤0.35

0.80~1.50