ASTM A53 Carbon Steel Pipes for General Service Pipelines: Versatile Fluid Transport Solutions.
Seamless & Welded Pipes (10–426mm OD, 1–100mm WT) with ±1% Diameter Precision.
Manufactured to ASTM A53, ASME SA53, and API 5L standards, our carbon steel pipes are engineered for water, gas, steam, and air systems. Available in Grade A (205 MPa) and Grade B (240 MPa), these pipes come in 3–12m lengths (customizable) with threaded, plain, or beveled ends, supporting 15–20% higher pressure capacity than standard structural pipes.
Key Features:
- Pressure Rating: 2.5–20 MPa (362–2,900 psi)
- Surface Finish: Black, galvanized, or FBE-coated (50–300µm)
- Certifications: API 5L PSL1, ISO 9001:2015, NACE MR0175
Technical Specifications
Dimensional Tolerances
| Parameter | Tolerance | Standard |
|---|---|---|
| Outer Diameter | ±1% | ASTM A530 |
| Wall Thickness | ±10%/-5% | ASME B36.10M |
| Straightness | ≤1.6mm/m | EN 10255 |
Mechanical Properties (Grade B)
| Yield Strength | Tensile Strength | Elongation | Hardness | Max Temp |
|---|---|---|---|---|
| 240 MPa | 415 MPa | ≥20% | ≤79 HRB | 425°C (797°F) |
Material Composition & Manufacturing
Chemical Analysis (ASTM A53 Grade B)
| Element | C ≤ | Mn ≤ | P ≤ | S ≤ | Si ≤ |
|---|---|---|---|---|---|
| Content | 0.30% | 1.20% | 0.050% | 0.045% | 0.25% |
Production Process:
- Seamless (Type S): Hot-rolled billets for high-pressure systems (ASTM A106).
- ERW Welded (Type E): High-frequency induction welding for cost-efficiency.
- Testing: Hydrostatic test at 1.5×MAOP (ASTM A53 Sec 12).
Applications & Performance
- Water Distribution:
- 114mm OD, 6mm WT: Municipal networks (AWWA C151), 10 MPa capacity.
- Steam Lines:
- 73mm OD, 5mm WT: Industrial boilers (ASME B31.1), 15 MPa rating.
- Gas Transmission:
- 168mm OD, 7mm WT: Low-pressure residential systems (ASME B31.8).
Advantages vs. Competitors:
- Cost Efficiency: 25% lower cost than A106 pipes for non-critical systems.
- Flexibility: Compatible with threading, grooving, or welding.
Quality Assurance & Packaging
- Non-Destructive Testing:
- Hydrostatic Test: 5–100 bar for 5–10 seconds.
- Visual Inspection: ASTM A530 for surface defects.
- Surface Protection:
- VCI paper + galvanized coating (ISO 1461).
- Export Packaging:
- Hexagonal bundles with steel straps (max 4 tons).
Packing And Delivery
