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Basic Information
JIS G3466 STKR490 TUBE(Carbon steel pipe for mechanical construction)
Standard: JIS G3466
Grade: STKR490 ("STK" means steel pipe for mechanical structures, "R" means cold working or hot working, "490" means minimum tensile strength of 490 MPa).
Outside Diameter: 20*20-1200-*200mm Wall Thickness:1.3-50mm
Outside Diameter: 20*30-1200*1500mm Wall Thickness:1.2-50mm
Length: 5.8,m, 6m, 12m or as your requirement
Surface Treatment: Painting, Oiling, Galvanized, 3lpe,3pe
Chemcial Composition
| Grade | Chemical Composition | ||||
| C max. |
Si max. |
Mn max. |
P max. |
S max. |
|
| STKR 400 | 0.25 | - | - | 0.04 | 0.04 |
| STKR 490 | 0.18 | 0.55 | 1.50 | 0.04 | 0.04 |
Physical Requirement
| Grade | Mechanical Properties | ||
| Tensile strength Mpa |
Yield strength MPa | Elongation % min |
|
| STKR 400 | 400 | 245 | 23 |
| STKR 490 | 490 | 325 | 23 |
Application
JIS G3466 STKR490 steel pipe is a kind of high-strength carbon steel pipe, widely used in construction, machinery, automotive and other fields.
main applications:
1. Building structure
- Use: Used in high-rise buildings, Bridges, towers, etc.
- Advantages: high strength, good weldability and workability.
2. Mechanical manufacturing
- Use: Manufacturing engineering machinery, agricultural machinery, mining equipment, etc.
- Advantages: wear resistance, impact resistance, suitable for heavy load environment.
3. The automobile industry
- Use: Used for frame, chassis, drive shaft, etc.
- Advantages: High strength and good fatigue performance, improve safety and durability.
4. The energy sector
- Application: Used for oil and natural gas pipeline and support.
- Advantages: high pressure resistance, corrosion resistance, suitable for harsh environment.
5. Other areas
- Use: Used in the manufacture of cranes, ships, railway vehicles, etc.
- Advantages: high strength and good processability, suitable for a variety of needs.
Advantages
Core advantages
High strength:
Tensile strength ≥490 MPa, suitable for load-bearing and impact resistance scenarios.
Good machinability:
It is easy to weld, bend, cut, to meet the needs of complex structures.
Economy:
Compared with alloy steel, carbon steel has lower cost and high cost performance.
Standardization
It is in line with JIS standards, stable quality, easy to global procurement.
Correlation standard comparison:
JIS G3445: Alloy steel tubes for mechanical structures (such as STKM series, higher strength but higher cost);
ASTM A500: Carbon steel tube for American standard construction (similar in performance to JIS G3466, but different in standard system).
Matters needing attention
Matters needing attention
Welding requirements:
The welding process should be controlled to avoid a decrease in the strength of the heat affected zone.
Anti-corrosion treatment:
exposure to damp or corrosive environment needs to be galvanized, coating and other treatment.
Quality certification:
The material complies with JIS G3466 standard and is tested (e.g. tensile test, impact test).
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