Standard
GB/T8163 China National Standard
ASTM A 53M Standard of American Society for Testing＆ Materials
ASTM A 106 Standard of American Society for Testing＆ Materials
Uses: used in petroleum, natural gas and other fluid transfer
Delivery status: hot-rolled
Size deviation
|
Pipe species |
Pipe sizemm |
Allow Deviation |
|
Ordinary Level |
Advanced |
|
Hot-rolled tubes |
OD |
All |
±1%
Min：±0.50mm |
— |
|
Wall thickness |
All |
+15.0%
-12.5%
Min：+0.45/-0.40 mm |
— |
Note: The deviation can also be supplied ASTM standards.
echanical Properties
|
Standard |
Trademark |
Tensile strength
MPa |
Yield point
MPa |
Percentage elongation
% |
|
S≤16 |
S＞16 |
|
|
Not less than |
|
GB/T8163 |
10 |
335~475 |
205 |
195 |
24 |
|
20 |
410~550 |
245 |
235 |
20 |
|
Q295 |
430~610 |
295 |
285 |
22 |
|
Q345 |
490~665 |
325 |
315 |
21 |
|
ASTM A 53M |
A |
≥330 |
≥205 |
按ASTM A 53M的表3 |
|
B |
≥415 |
≥240 |
|
ASTM A106 |
A |
≥330 |
≥205 |
按ASTM A 106的表4 |
|
B |
≥415 |
≥240 |
|
C |
≥485 |
≥275 |
Grade and chemical composition（%）
|
Standard |
Grade |
C |
Si |
Mn |
P≤ |
S≤ |
Ni |
Cr |
Cu≤ |
Mo |
V |
Al |
|
GB/T8163 |
10 |
0.07~0.13 |
0.17~0.37 |
0.35~0.65 |
0.035 |
0.035 |
≤0.30 |
≤0.15 |
0.25 |
—— |
—— |
—— |
|
20 |
0.17~0.23 |
0.17~0.37 |
0.35~0.65 |
0.035 |
0.035 |
≤0.30 |
≤0.25 |
0.25 |
—— |
—— |
—— |
|
Q295（A、B） |
≤0.16 |
≤0.55 |
0.80~1.50 |
0.035 |
0.035 |
Ti：0.02~0.20 |
—— |
Nb：0.015~0.060 |
0.02~0.15 |
—— |
|
Q345A |
≤0.20 |
≤0.55 |
1.00~1.60 |
0.035 |
0.035 |
Ti：0.02~0.20 |
—— |
Nb：0.015~0.060 |
0.02~0.15 |
—— |
|
Q345B |
≤0.20 |
≤0.55 |
1.00~1.60 |
0.035 |
0.035 |
Ti：0.02~0.20 |
—— |
Nb：0.015~0.060 |
0.02~0.15 |
—— |
|
Q345C |
≤0.20 |
≤0.55 |
1.00~1.60 |
0.035 |
0.035 |
Ti：0.02~0.20 |
—— |
Nb：0.015~0.060 |
0.02~0.15 |
≥0.015 |
|
Q345D |
≤0.18 |
≤0.55 |
1.00~1.60 |
0.030 |
0.030 |
Ti：0.02~0.20 |
—— |
Nb：0.015~0.060 |
0.02~0.15 |
≥0.015 |
|
Q345E |
≤0.18 |
≤0.55 |
1.00~1.60 |
0.025 |
0.025 |
Ti：0.02~0.20 |
—— |
Nb：0.015~0.060 |
0.02~0.15 |
≥0.015 |
|
ASTM A 53M |
A |
≤0.25 |
—— |
≤0.95 |
0.035 |
0.035 |
≤0.40 |
≤0.40 |
0.40 |
≤0.15 |
≤0.08 |
—— |
|
B |
≤0.30 |
—— |
≤1.20 |
0.035 |
0.035 |
≤0.40 |
≤0.40 |
0.40 |
≤0.15 |
≤0.08 |
—— |
|
ASTM A106 |
A |
≤0.25 |
≥0.10 |
0.27~0.93 |
0.035 |
0.035 |
≤0.40 |
≤0.40 |
0.40 |
≤0.15 |
≤0.08 |
—— |
|
B |
≤0.30 |
≥0.10 |
0.29~1.06 |
0.035 |
0.035 |
≤0.40 |
≤0.40 |
0.40 |
≤0.15 |
≤0.08 |
—— |
|
C |
≤0.35 |
≥0.10 |
0.29~1.06 |
0.035 |
0.035 |
≤0.40 |
≤0.40 |
0.40 |
≤0.15 |
≤0.08 |
—— |
NOTE: After consultation, but also for other brands of steel | 
Seamless oil pipe
