Q420C Structural Steel Alloy Steel Tube Seamless Steel Pipes For Liquid Service
Structural Steel Seamless Steel Pipes
,Liquid Service Seamless Steel Pipes
,Q420C Seamless Steel Pipes

Q420C Structural Steel Alloy Steel Tube Seamless Steel Pipes For Liquid Service
Material
Q420C is a high-strength structural steel known for its excellent mechanical properties and weldability. It is commonly used in the construction of bridges, buildings, and other structures requiring high strength and durability. The seamless steel pipes made from Q420C are particularly suitable for liquid service due to their ability to withstand high pressure and resist corrosion.
Specification
- Standard: GB/T 1591
- Grade: Q420C
- Type: Seamless Steel Pipe
- Application: Liquid Service
- Diameter Range: Typically from 10mm to 1000mm
- Wall Thickness: Typically from 1mm to 100mm
- Length: As required, typically up to 12 meters
Key Features
- High Strength: Offers excellent tensile and yield strength.
- Good Weldability: Can be easily welded without compromising structural integrity.
- Corrosion Resistance: Suitable for use in environments where corrosion is a concern.
- Versatility: Can be used in a wide range of applications, particularly in liquid service.
- Durability: Long-lasting performance even under high pressure and stress.
Chemical Composition
| Element | Composition (%) |
|---|---|
| C | ≤ 0.20 |
| Si | ≤ 0.50 |
| Mn | 1.20 - 1.60 |
| P | ≤ 0.030 |
| S | ≤ 0.030 |
| Nb | ≤ 0.07 |
| V | ≤ 0.15 |
| Ti | ≤ 0.20 |
Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength | ≥ 420 MPa |
| Tensile Strength | 520 - 680 MPa |
| Elongation | ≥ 16% |
| Impact Energy | ≥ 34 J (at -20°C) |
Similar Standards and Steel Grades
- EN 10025-6: S460QL
- ASTM A572: Grade 60
- JIS G3106: SM490YB
Application
Q420C seamless steel pipes are widely used in industries where high strength and durability are essential. Typical applications include:
- Construction: Used in the framework of buildings and bridges.
- Oil and Gas: Suitable for pipelines and other infrastructure.
- Mechanical Engineering: Used in the manufacture of machinery and equipment.
- Transportation: Employed in the construction of vehicles and ships.











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A: Yes, we could offer the sample for free charge but need pay the cost of freight.
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