ASTM A671 Carbon Steel Pipes
ASC LLP is a trusted name among manufacturers, stockholders, and suppliers of ASTM A671 Carbon Steel Pipes in India and across the globe. These pipes are known for their high strength, durability, and resistance to pressure and temperature, making them ideal for use in oil & gas, power plants, refineries, and petrochemical industries.
As a leading ASTM A671 Carbon Steel Pipe supplier, we offer a wide range of products, including ASTM A671 EFW Carbon Steel EFW Pipes, ASTM A671 Seamless Pipe, ASTM A671 Welded Pipe, and A671 LSAW Pipe, all manufactured using the latest technology and quality-tested raw materials.
What are ASTM A671 Carbon Steel Pipes?
ASTM A671 Carbon Steel Pipes are electric-fusion-welded (EFW) steel pipes made from pressure vessel quality plates of carbon steel. These pipes are specifically designed for low-temperature service and high-pressure applications. The pipes are tested rigorously to ensure they meet the mechanical and chemical requirements specified by ASTM and ASME standards.
These pipes are categorized under ASTM A671 and ASME SA671 specifications. They are widely used in pipeline systems that need high strength and durability under harsh environmental conditions.
Advantages of ASTM A671 Carbon Steel Pipes
- High Strength: Excellent mechanical properties make them ideal for high-pressure environments.
- Corrosion Resistance: Great resistance to wear and tear under harsh conditions.
- Cost-Effective: Especially A671 Welded Pipe is more affordable compared to seamless pipes for large diameters.
- Versatile: Available in multiple grades and types to suit different industrial needs.
- Easy Fabrication: Can be cut, welded, and machined without hassle.
Types of ASTM A671 Pipes We Supply
At ASC LLP, we supply various types of ASTM A671 Pipes based on customer requirements and applications:
1. ASTM A671 EFW Carbon Steel EFW Pipes: These are Electric Fusion Welded (EFW) pipes made from carbon steel plates. They are used in structural and high-temperature environments, offering excellent performance and safety.
2. ASTM A671 Welded Pipe: Welded pipes are made by welding steel plates into a tubular form. They offer great dimensional accuracy and cost-effectiveness for large-diameter piping systems.
3. ASTM A671 Seamless Pipe: Seamless pipes do not have any welds or joints and are manufactured through extrusion. They offer superior strength and corrosion resistance, ideal for critical applications.
4. A671 LSAW Pipe: Longitudinal Submerged Arc Welded (LSAW) pipes are ideal for oil and gas transportation due to their high strength and ability to withstand pressure.
ASTM A671 Pipe Material Grades
The common grades of ASTM A671 pipe material include:
These grades are made from carbon steel plates that are normalized and tested for toughness and impact resistance. Customers can choose the appropriate grade depending on their service environment, including high pressure and low-temperature conditions.
Schedule and Size Chart – ASTM A671 Carbon Steel Pipes
| Nominal Pipe Size (NPS) | Outside Diameter (OD) (inches) | Schedule 20 (mm) | Schedule 40 (mm) | Schedule 80 (mm) | Schedule 160 (mm) |
| 1/2″ | 21.3 | 2.11 | 2.77 | 3.73 | 4.78 |
| 1″ | 33.4 | 2.77 | 3.38 | 4.55 | 6.35 |
| 2″ | 60.3 | 2.77 | 3.91 | 5.54 | 8.74 |
| 4″ | 114.3 | 3.05 | 6.02 | 8.56 | 13.49 |
| 6″ | 168.3 | 3.4 | 7.11 | 10.97 | 18.26 |
| 8″ | 219.1 | 3.76 | 8.18 | 12.7 | 23.01 |
| 10″ | 273.1 | 4.19 | 9.27 | 15.09 | 28.58 |
| 12″ | 323.9 | 4.57 | 9.53 | 17.48 | 33.32 |
| 16″ | 406.4 | 4.78 | 9.53 | 18.26 | 36.53 |
| 20″ | 508 | 5.54 | 9.53 | 19.05 | 40.49 |
| 24″ | 609.6 | 6.35 | 9.53 | 20.62 | 44.45 |
Mechanical Properties Chart – ASTM A671 Pipes (Typical Values for Grade CC60, CC65, CC70)
| Property | Grade CC60 | Grade CC65 | Grade CC70 |
| Yield Strength (min) | 240 MPa (35 ksi) | 260 MPa (38 ksi) | 290 MPa (42 ksi) |
| Tensile Strength (min) | 415 MPa (60 ksi) | 450 MPa (65 ksi) | 485 MPa (70 ksi) |
| Elongation (% in 50 mm) | ≥ 22% | ≥ 21% | ≥ 20% |
| Impact Test (Charpy V) | As required | As required | As required |
| Hardness (max, HBW) | ~ 187 | ~ 192 | ~ 197 |
ASTM A671 Pipe Specifications
| Specification | Description |
| Standard | ASTM A671 / ASME SA671 |
| Pipe Type | EFW, Welded, LSAW, Seamless |
| Material | Carbon Steel |
| Grades | CC60, CC65, CC70 |
| Size Range | 1/2” NB to 48” NB |
| Wall Thickness | SCH 20 to SCH XXS |
| Form | Round, Square, Rectangular |
| End Types | Plain End, Beveled End, Threaded |
Chemical Composition Chart – ASTM A671 Pipe Material
| Element | Composition (%) |
| Carbon (C) | ≤ 0.30 |
| Manganese (Mn) | 0.29 – 1.06 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Silicon (Si) | 0.10 – 0.35 |
| Other Elements | As agreed (e.g., Nb, V, Ti based on grade requirements) |
Physical Properties Chart – ASTM A671 Carbon Steel Pipes
| Property | Value |
| Density | 7.85 g/cm³ (7850 kg/m³) |
| Melting Point | 1425 – 1540°C |
| Thermal Conductivity | ~54 W/m·K at 20°C |
| Specific Heat Capacity | ~486 J/kg·K at 20°C |
| Electrical Resistivity | 0.15 µΩ·m at 20°C |
| Modulus of Elasticity | 200 GPa (29,000 ksi) |
| Coefficient of Expansion | 12 × 10⁻⁶ /°C |
Applications of ASTM A671 Carbon Steel Pipes
Our ASTM A671 Carbon Steel Pipes are used in various industries due to their reliability and performance:
- Oil and Gas Pipelines
- Petrochemical Plants
- Refineries
- Boiler Manufacturing
- Power Plants
- Water Treatment Plants
- Structural Applications
These pipes can handle extreme temperatures and pressures, making them suitable for transporting gas, steam, water, and oil.
Why Choose ASC LLP as Your ASTM A671 Pipe Supplier?
As a reputed ASTM A671 Carbon Steel Pipe supplier and Carbon Steel Seamless ASME SA671 Steel tube Manufacturer, ASC LLP is committed to delivering only the highest quality products. Here’s what makes us different:
- Wide Inventory: We are a top stockholder of ASTM A671 EFW Pipes in a variety of sizes and grades.
- Competitive Pricing: Get A671 Welded Pipe at the best price without compromising on quality.
- Global Reach: We serve clients in the Middle East, Europe, Southeast Asia, and beyond.
- Quick Delivery: Our supply chain is optimized for fast processing and delivery.
- Quality Assurance: Every pipe is tested for strength, corrosion resistance, and dimensional accuracy.
Global Reach
Amardeep Steel Centre boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality ASTM A671 Carbon Steel Pipe. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.
Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.
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