Seamless steel pipe- pipeline
- OCTG
- ASTM pipe
- API pipe
- Heavy Wall Steel Pipe
- Boiler steel pipes
- Casing and tubing
- Welded steel pipe
- spiral steel pipe
- ERW pipe
- SSAW pipe
- DSAW pipe
- LSAW pipe
- Carbon steel pipe
- Black steel pipe
- fluid pipe
- Pipeline Coating,2PE 3PE
- Structural steel pipe
- Mild Steel Pipe
- Alloy pipe
- galvanized steel pipe
- stainless steel pipe
- steel pipe schedule
- pipe fittings
Carbon Steel Square Pipes
Carbon Steel Square Tubes
Application:
It is widely used in building, machine, chemical equipment, automobile industrial, container, it is also applied to agriculture and mine machine.
Standard：
ASTM A500, GB6728
Steel grade:
ASTM A500: A, B, C
GB6728：Q195，Q215，Q235，Q345
Standard: ASTM A500
Chemical Composition(%)
|
Chemical Requirement |
||||
|
|
Composition % |
|||
|
|
Grade A |
Grade B |
||
|
|
Heat |
Product |
Heat |
Product |
|
Element |
analysis |
analysis |
analysis |
analysis |
|
Carbon max |
0.26 |
0.3 |
0.22 |
0.26 |
|
Manganese max |
… |
… |
1.4 |
1.45 |
|
Phosphorus, max |
0.035 |
0.045 |
0.03 |
0.04 |
|
Sulfur max |
0.035 |
0.045 |
0.02 |
0.03 |
|
Copper, when copper steel is specified, min |
0.20 |
0.18 |
0.2 |
0.18 |
|
Where an ellipsis (...)appears in this table, there is no requirement |
||||
|
For each reduction of 0.01 percentage point below the specified maximum for carton, |
||||
GB6728：
|
SteelGrade |
CHEMICAL COMPOSITION |
MECHANICAL PROPERTIES |
||||||
|
|
C (%) |
Si (%) |
Mn
(%) |
P(%)
Max |
(%)
Max |
YS(Mpa)
Min |
TS(Mpa)
Min |
El (%)
Min |
|
Q195 |
.06-0.012 |
0.3 |
0.25-0.5 |
0.45 |
0.5 |
195 |
315 |
22 |
|
Q215 |
0.09-0.15 |
0.3 |
0.25-0.55 |
0.45 |
0.5 |
215 |
335 |
22 |
|
Q235 |
0.12-0.22 |
0.3 |
0.3-0.7 |
0.45 |
0.45 |
235 |
375 |
20 |
|
Q345 |
0.20 |
0.55 |
1.0-1.6 |
0.45 |
0.45 |
345 |
510 |
21 |
Mechanical Properties
|
Tensile Requirement |
||
|
|
Grade A |
Grade B |
|
Tensile strength, min, psi (Mpa) |
48000 (400) |
70000 (483) |
|
Yield strength, min, psi (Mpa) |
36000 (250) |
50000 (345) |
|
Elongation in 2 in. (50.8mm), min, % |
23 |
23 |
上一篇：cold drawn seamless pipe For Hydraulic & Pneumatic Lines
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- Carbon steel pipe Standard
- ASTM A106 pipe
- ASTM A53 pipe
- ASTM A192 pipe
- ASTM A252 pipe
- ASTM A179 pipe
- DIN 1629 pipe
- DIN 17175 pipe
- Alloy pipe Standard
- ASTM A335 pipe
- ASTM A210 pipe
- ASTM A213 pipe
- ASTM A234 pipe
- ASTM A519 pipe
- Stainless pipe metrial
- 304, 304L, 304SS pipe
- 310, 310S pipe
- 316, 316L pipe
- Pipe Fitting Metrial
- Carbon steel: A234 WPB pipe
- Stainless steel: 304,316 pipe
- Alloy steel: A234 WP5 WP9 WP11 WP22 pipe