Standard:
GB/T8162——China National Standard
ASTM A53-American Society for Testing and Materials Standard
ASME SA53-American Boiler and Pressure Vessel Code,ect.
Use:
Used to manufacture seamless pipes for pipe, containers, equipment, pipe fitting and mechanical structure
Main production steel pipe grades:
10, 20, 35, 45, Q345, 15CrMo, 12Cr1MoV, A53A, A53B, SA53A, SA53B, etc.
Dimensional tolerance:
|
Types of steel pipe |
Outer diameter（D） |
Steel pipe wall thickness（S） |
||
|
Cold draw pipe |
Steel pipe outer diameter(mm) |
Allowable deviation(mm) |
Steel pipe wall thickness(mm) |
Allowable deviation(mm) |
|
＞30～50 |
±0.3 |
≤30 |
±10％ |
|
|
＞50～219 |
±0.8％ |
|||
|
Hot rolled pipe |
＞219 |
±1.0％ |
＞20 |
±10％ |
Mechanical properties：
|
Standard |
Grade |
Tensile strength（MPa） |
Yield strength（MPa） |
Elongation（％） |
|
GB/T8162 |
10 |
≥335 |
≥205 |
≥24 |
|
20 |
≥390 |
≥245 |
≥20 |
|
|
35 |
≥510 |
≥305 |
≥17 |
|
|
45 |
≥590 |
≥335 |
≥14 |
|
|
Q345 |
≥490 |
≥325 |
≥21 |
|
|
15CrMo |
≥440 |
≥295 |
≥22 |
|
|
12Cr1MoV |
≥490 |
≥245 |
≥22 |
|
|
ASTM A53 ASME SA53 |
A |
≥330 |
≥205 |
|
|
B |
≥415 |
≥240 |
Chemical composition：
| Standard |
Grade |
Chemical composition（％） |
|||||||||
|
C |
Si |
Mn |
P |
S |
Cu |
Ni |
Mo |
Cr |
V |
||
|
GB/T8162 |
10 |
0.07～0.14 |
0.17～0.37 |
0.35～0.65 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.25 |
/ |
≤0.15 |
/ |
|
20 |
0.17～0.24 |
0.17～0.37 |
0.35～0.65 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.25 |
/ |
≤0.25 |
/ |
|
|
35 |
0.32～0.40 |
0.17～0.37 |
0.50～0.80 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.25 |
/ |
≤0.25 |
/ |
|
|
45 |
0.42～0.50 |
0.17～0.37 |
0.50～0.80 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.25 |
/ |
≤0.25 |
/ |
|
|
Q345 |
0.12～0.20 |
0.20～0.55 |
1.20～1.60 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.25 |
/ |
≤0.25 |
/ |
|
|
15CrMo |
0.12～0.18 |
0.17～0.37 |
0.40～0.70 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.30 |
0.40～0.55 |
0.80～1.10 |
/ |
|
|
12Cr1MoV |
0.08～0.15 |
0.17～0.37 |
0.40～0.70 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.30 |
0.25～0.35 |
0.90～1.20 |
0.15～0.30 |
|
|
ASTMA53 ASMESA53 |
A |
≤0.25 |
/ |
≤0.95 |
≤0.05 |
≤0.06 |
≤0.40 |
≤0.40 |
≤0.15 |
≤0.40 |
≤0.08 |
|
B |
≤0.30 |
/ |
≤1.20 |
≤0.05 |
≤0.06 |
≤0.40 |
≤0.40 |
≤0.15 |
≤0.40 |
≤0.08 |
|
