sales@hu-steel.com
English
Español
Application: For conveying of petroleum, gas and other fluids
Tolerance on Dimensions
|
Pipe types |
Pipe Szie(mm) |
Tolerances |
|
|
Hot rolled |
OD |
All |
±1% (min ±0.50mm) |
|
WT |
All |
+15%, -12.5% |
|
|
Cold drawn |
OD |
6～10 |
±0.20mm |
|
10～30 |
±0.40mm |
||
|
30～50 |
±0.45mm |
||
|
>50 |
±1% |
||
| WT |
≤1 |
±0.15mm |
|
|
>1～3 |
+15% -10% |
||
|
>3 |
+12.5% -10% |
||
Chemical composition and mechanical properties
|
Standard |
Grade |
Chemical composition |
Mechanical Properties |
|||||||||
|
C |
Si |
Mn |
P | S |
Cr |
Ni |
Cu |
Tensile Strength(Mpa) |
Yield Strength(Mpa) |
Elongation(%) |
||
|
GB/T8163 |
10 |
0.07-0.14 |
0.17-0.37 |
0.35-0.65 |
≤0.035 |
≤0.035 |
≤0.15 |
≤0.25 |
≤0.25 |
335-457 |
≥205 |
≥24 |
| 20 |
0.17-0.24 |
0.17-0.37 |
0.35-0.65 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.25 |
≤0.25 |
410-550 |
≥245 |
≥20 |
|
|
Q345 |
0.12-0.20 |
0.20-0.55 |
1.20-1.60 |
≤0.045 |
≤0.045 |
- | - | - |
490-665 |
≥325 |
≥21 |
|
