X70 PSL2 pipeline steel is a high-strength, high-toughness pipeline steel grade under the API 5L standard, specifically designed for long-distance, high-pressure transportation of energy sources such as oil and natural gas. In the API Spec 5L standard, "X" represents pipeline steel, and "70" represents its minimum yield strength of 70 ksi (approximately 485 MPa). In the European standard system, equivalent strength grades are often referred to as L485 or S485.
Total Pipeline Support: API 5L X70 PSL2 Pipes + Custom Coating + Field Joint Kits for Integrated LATAM Hubs.
Product Dimensions & Specifications Table of API 5L X70 PSL2 oil and gas pipelines
| Manufacturing Process | Outer Diameter (OD) Range | Wall Thickness (WT) Range | Standard Lengths |
| Seamless (SMLS) | 2" – 28" (60.3 – 711mm) | SCH 20 – SCH XXS (Up to 60mm) | 5.8m / 6.0m / 11.8m / 12m (SRL / DRL) |
| ERW / HFW | 4" – 24" (114.3 – 610mm) | Max 25.4mm | Max 18m |
| LSAW (Straight Seam) | 16" – 60" (406.4 – 1524mm) | 6.0mm – 60mm | Max 12.5m (Single Seam) / 18m |
| SSAW (Spiral) | 18" – 100" (457 – 2540mm) | 6.0mm – 25.4mm | Max 20m+ (Customizable) |
Surface Treatment Selection Advice (Coating) Of API 5L X70 PSL2 pipeline for oil and gas
Onshore (Rainforests & Deserts): 3LPE (3-Layer Polyethylene)
Recommendation: Ideal for the humid Amazon Basin or rocky Andean terrains. The PE outer layer provides superior mechanical protection against soil stress and abrasion during backfilling.
Offshore (Deepwater & Saline): FBE + Internal Flow Coating
Recommendation: For Brazil's offshore projects, Fusion Bonded Epoxy (FBE) offers excellent chemical adhesion. Adding an Internal Liquid Epoxy Coating reduces friction, increasing gas flow efficiency by 3-5%-a major ROI booster for operators.
Testing & Quality Control (PSL2 Standard) Of API 5L X70 PSL2 Oil and gas transmission pipe
Charpy V-notch Impact Test: Verified toughness at 0°C to -45°C, essential for high-altitude Andean pipelines where night temperatures plummet.
100% Non-Destructive Testing (NDT): Ultrasonic (UT) or Radiographic (RT) testing of the entire weld and pipe body to eliminate micro-cracks.
Hydrostatic Testing: Piece-by-piece testing (typically ≥ 20.0 MPa) to guarantee sealing under maximum operating pressure.
DWTT (Drop Weight Tear Test): Mandatory for pipes ≥ 20", ensuring the pipe can arrest a running fracture in large-diameter gas lines.
Packaging & Transportation of API 5L X70 PSL2 High Yield Line Pipes
Precision Bevel Protection: For X70 pipes used in automated welding, we use heavy-duty steel-plastic composite protectors to safeguard J-bevels.
UV-Resistant Wrapping: Optional white UV-reflective wrapping to prevent FBE coating degradation during long customs clearances in tropical ports.
ISPM 15 Compliance: All wooden dunnage and bracing are heat-treated and IPPC-stamped to ensure seamless customs clearance in Brazil and Chile.
Soft Lifting: Mandatory use of nylon slings to prevent any scratches on the anti-corrosion coating.
FAQ
API 5L X70 is a high carbon version pipe grade that has good corrosive properties in several atmospheres. API 5L x70, which has solid chemical properties, contains carbon up to 0.22-0.28 per cent, manganese up to 1-1.2 per cent, phosphorus up to 0.03 per cent, sulphur, nickel, chromium, and copper in precise amounts.
What is the difference between API 5L X65 and X70?
API 5L X65: Widely used in onshore and offshore pipelines where moderate strength and good weldability are required. API 5L X70: Preferred for high-pressure pipelines and projects requiring higher strength-to-weight ratios, such as deepwater offshore pipelines.
What is the wall thickness of API 5L X70 pipe?
Nominal HIC Tested X70 Pipe Size 1/2" to 48 " O.D. API 5L X70 Pipe Wall Thickness - Schedule 10 through 160, STD, XS, XXS. API 5L X70 PSL1 Pipe End Finishes: Beveled, Square Cut, Threaded & Coupled. API 5L X70 Grade B pipelines for combustible fluids.
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