High-quality seamless carbon steel pipes conforming to ASTM A106 standard. Designed for high-temperature and high-pressure environments in industries like oil & gas, power plants, boilers, and petrochemicals.
ASTM A106 seamless carbon steel pipes are widely used in industrial piping systems for transporting fluids and gases under high temperature and pressure. These pipes are manufactured using hot-rolled or cold-drawn processes and conform to the American standard ASTM A106, covering grades A, B, and C.
Among these, Grade B is the most commonly used due to its balanced strength, weldability, and versatility. These pipes are ideal for bending, flanging, and similar forming operations, and suitable for welding.

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APPLICATION OF A106 STEEL PIPE
ASTM A106 seamless carbon steel pipes are primarily used for:
Its excellent thermal and pressure resistance makes it ideal for use in critical systems that transport steam, oil, gas, and high-temperature fluids.
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CHEMICAL COMPOSITION OF ASTM A106 SEAMLESS STEEL PIPE
| Grade | C (max%) | Mn (%) | P (max%) | S (max%) | Si (min%) | Cr (max%) | Cu (max%) | Mo (max%) | Ni (max%) | V (max%) |
|---|---|---|---|---|---|---|---|---|---|---|
| Grade A | 0.25 | 0.27 – 0.93 | 0.035 | 0.035 | 0.10 | 0.40 | 0.40 | 0.15 | 0.40 | 0.08 |
| Grade B | 0.30 | 0.29 – 1.06 | 0.035 | 0.035 | 0.10 | 0.40 | 0.40 | 0.15 | 0.40 | 0.08 |
| Grade C | 0.35 | 0.29 – 1.06 | 0.035 | 0.035 | 0.10 | 0.40 | 0.40 | 0.15 | 0.40 | 0.08 |
| Grade | Min. Yield Strength (MPa) | Min. Tensile Strength (MPa) |
|---|---|---|
| Grade A | 205 | 330 |
| Grade B | 240 | 415 |
| Grade C | 275 | 485 |
| Specification | Mechanical Properties | Grade A | Grade B | Grade C |
|---|---|---|---|---|
| ASTM A53 | Tensile Strength, min (psi/MPa) | 48,000 (330) | 60,000 (415) | – |
| Yield Strength, min (psi/MPa) | 30,000 (205) | 35,000 (240) | – | |
| ASTM A106 | Tensile Strength, min (psi/MPa) | 48,000 (330) | 60,000 (415) | 70,000 (485) |
| Yield Strength, min (psi/MPa) | 30,000 (205) | 35,000 (240) | 40,000 (275) |
PRODUCT SPECIFICATIONS
PRODUCT SPECIFICATIONS
Product Specification – ASTM A106 / ASME SA106 Seamless Steel Pipe
| Available Grades | – Grade A: Lower strength, more ductile – Grade B: Balanced mechanical properties (most common) – Grade C: Higher strength |
| Standard | ASTM A106 / ASME SA106 |
| Type | Seamless |
| OD Range | 1/2″ – 36″ (21.3mm – 914mm) |
| Wall Thickness | SCH10 to SCH160 / XXS |
| Length | 5.8m, 6m, 11.8m, or customized |
| Ends | Plain End / Beveled End / Threaded with Coupling |
| Surface Options | Black painted, varnished, anti-rust oil, galvanized, or bare |
Chemical Composition (Typical – Grade B)
| Element | Content |
|---|---|
| Carbon (C) | ≤ 0.30% |
| Manganese (Mn) | 0.29 – 1.06% |
| Phosphorus (P) | ≤ 0.035% |
| Sulfur (S) | ≤ 0.035% |
| Silicon (Si) | ≥ 0.10% |
Mechanical Properties (Grade B)
| Property | Value |
|---|---|
| Tensile Strength | ≥ 415 MPa |
| Yield Strength | ≥ 240 MPa |
| Elongation | ≥ 20% |
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