Product Overview – ASTM A106 Grade C Welded Pipes
ASTM A106 Grade C is known for its higher strength and pressure-bearing capacity compared to Grades A and B. While originally specified for seamless pipes, equivalent welded pipes are widely used across industries where similar mechanical performance is required with better cost efficiency.
Manufactured using advanced processes such as EFW (Electric Fusion Welding) and ERW (Electric Resistance Welding), these pipes ensure structural integrity, dimensional accuracy, and consistent quality across large diameters.
Due to their enhanced strength properties, ASTM A106 Gr C equivalent welded pipes are preferred in high-pressure pipelines, energy sectors, and heavy industrial operations.
Standard & Material Identification - ASTM A106 Grade C Welded Pipes
Technical Specifications – ASTM A106 Gr C Welded Pipes
| Pipe Type: | ERW / EFW Welded Pipes |
| Manufacturing Process: | Steel Plate / Coil → Forming → Welding → Heat Treatment → Testing |
| Outer Diameter: | 15 mm to 2000 mm |
| Wall Thickness: | 3 mm to 60 mm |
| Length Options: | 6 Meter/12 meters/Custom Length |
| Surface Finish: | Black/Galvanized/Shot Blasted/Anti-Corrosion Coated |
| Testing Methods: | Hydrostatic Testing/Ultrasonic Testing/Radiographic Testing (for EFW)/PMI Testing/Dimensional Inspection |
| Certification : | EN 10204 3.1 / 3.2 MTC |
Third Party Inspection Available
All specifications are in accordance of ASTM A106/ASME A106 standards. Mechanical and chemical values are as per standard limits. Mill Test Certificates (MTC) available upon request.
Chemical Composition – ASTM A106 Grade C
| Element | Max (%) |
|---|---|
| Carbon (C): | 0.35% |
| Manganese (Mn): | 0.29 – 1.06% |
| Phosphorus (P): | 0.035% |
| Sulfur (S): | Max 0.035% |
| Silicon (Si) | Min 0.10% |
| Iron | Balance |
Note: ASTM A106 Grade C equivalent welded pipes are engineered to closely match the composition for consistent high-performance industrial use.
Mechanical Properties – ASTM A106 Gr C
| Property | Minimum Value |
|---|---|
| Tensile Strength | 485 MPa |
| Yield Strength | 275 MPa |
| Elongation | 30% |
Higher strength compared to Grades A & B makes Grade C suitable for demanding pressure and temperature environments.
Performance & Industrial Use
ASTM A106 Grade C equivalent welded pipes are designed for applications where higher strength, pressure resistance, and durability are essential.
- They provide:
- 🔸Enhanced load-bearing capacity
- 🔸Reliable performance under high pressure
- 🔸Good resistance to thermal stress
- 🔸Suitable for large-diameter industrial pipelines
These properties make them ideal for heavy-duty industrial systems and energy sector applications.
Industry Applications of ASTM A106 Gr C Welded Pipes
- Where ASTM A106 Gr B Welded Pipes are used:
- 🔸High Pressure Oil & Gas Pipelines
- 🔸Thermal & Nuclear Power Plants
- 🔸Petrochemical Processing Units
- 🔸Boilers & Pressure Vessels
- 🔸Structural Engineering Projects
- 🔸Heavy Industrial Fabrication
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