API 5L Carbon Steel Pipes for Oil & Gas Transmission: High-Performance Pipeline Solutions.
Seamless & Welded Pipes (10–426mm OD, 1–100mm WT) with ±1% Diameter Tolerance.
Engineered to API 5L, ASTM A106/A53, and EN 10208-2 standards, our carbon steel pipes are designed for high-pressure oil, gas, and steam transportation. Available in 3–12m lengths (customizable) and Grades X42–X80, these pipes meet stringent requirements for onshore and offshore pipelines, ensuring 20–30% higher burst pressure resistance than conventional alternatives.
Key Features:
- Standards Compliance: API 5L PSL1/PSL2, ISO 3183, DIN 17100
- Pressure Rating: 15–30 MPa (2,175–4,350 psi)
- Coatings: FBE, 3LPE, 3LPP (100–500µm thickness)
- Certifications: API Monogram, ISO 9001, NACE MR0175
Technical Specifications
Dimensional Tolerances
| Parameter | Tolerance | Standard |
|---|---|---|
| Outer Diameter | ±1% | API 5L Sec 8.3 |
| Wall Thickness | ±5%/-3% | ASTM A530 |
| Length | +100mm/-0mm | EN 10208-2 |
Mechanical Properties (X65 Grade)
| Yield Strength | Tensile Strength | Elongation | Hardness | Impact Toughness (-20°C) |
|---|---|---|---|---|
| 450–535 MPa | 535–760 MPa | ≥22% | ≤250 HV10 | ≥40 J (Charpy V-notch) |
Applications & Performance
- Oil Transmission:
- X70, 323mm OD, 15mm WT: Offshore pipelines with 25 MPa operating pressure (DNV OS-F101 compliant).
- Gas Distribution:
- X52, 219mm OD, 8mm WT: Urban networks (ASME B31.8), 12 MPa burst strength.
- Steam Lines:
- A106 Gr.B, 273mm OD, 12mm WT: Power plant systems (ASTM A106).
Material Composition (X60 PSL2):
- Carbon (C): ≤0.22%
- Manganese (Mn): ≤1.60%
- Sulfur (S): ≤0.015%
- Phosphorus (P): ≤0.025%
Manufacturing & Quality Assurance
- Production Process:
- Seamless (SMLS): Rotary piercing for 10–426mm OD (ASTM A106).
- Welded (ERW/SAW): High-frequency induction or submerged arc welding (API 5L Sec 9).
- Surface Treatment:
- Black/PE Coated: SSPC-SP10 near-white blast cleaning.
- Machined: RA ≤12.5µm roughness.
- Testing:
- Hydrostatic Test: 1.5×MAOP for 10 sec (API 5L Sec 9).
- UT/RT Inspection: ASTM E213 Level II for weld integrity.
Packaging & Logistics
- Bundling: Hexagonal bundles with steel straps (max 5 tons per bundle).
- End Protection: Plastic caps + anti-rust oil (ISO 8180 compliant).
- Export: Waterproof paper + wooden crates (customizable for maritime transport).
Packing And Delivery
