API 5L Grade B Large Diameter Thick Wall LSAW Steel Pipe For Oil Gas Transmission
Product Basic Information
Item | Details |
Full Product Name | API 5L Grade B Large Diameter Thick Wall LSAW Steel Pipe for Oil Gas Transmission |
Standard Compliance | API Spec 5L (46th Edition 2026), ASTM A53, ISO 3183, GB/T 9711, EN 10219 |
Product Specification Level | PSL1 / PSL2 (Sour Service Optional) |
Steel Grade | API 5L Grade B (Equivalent: L245, ASTM A53 Grade B) |
Dimension Specifications
Parameter | Range |
Outer Diameter (OD) | 406.4mm - 1524mm (16inch - 60inch) |
Wall Thickness (WT) | 25mm - 80mm (Large Thick Wall Range) |
Length | 5.8m - 12.5m (SRL / DRL, Customized Length Available) |
OD Tolerance | ±0.5% (Max. ±5mm) |
Wall Thickness Tolerance | -10% to + 15% |
Chemical Composition
Element | PSL1 | PSL2 |
Carbon (C) | 0.28 percent | 0.26 percent |
Manganese (Mn) | 1.20 percent | 1.15 percent |
Phosphorus (P) | 0.03 percent | 0.03 percent |
Sulfur (S) | 0.03 percent | 0.02 percent |
Silicon (Si) | 0.40 percent | 0.40 percent |
Mechanical Properties
Item | Details |
Manufacturing Process | JCOE / UOE Forming, Double-sided Longitudinal Submerged Arc Welding, Mechanical Expanding, Post-weld Heat Treatment (Optional) |
End Types | Plain End / Beveled End / Grooved End / Flanged End (Customized) |
Surface Treatment | Bare Pipe / Black Painting / Varnish Coating / FBE Coating / 3LPE/3PP Coating / Bitumen Coating (Anti-corrosion Customization) |
Non-destructive Testing | 100% Ultrasonic Testing (UT), X-ray Testing (RT), Hydrostatic Pressure Testing per API standard |
Application Scenarios
Scope | Details |
Core Application | Long-distance Onshore / Offshore Oil & Gas Transmission Pipelines |
Special Applicable Conditions | High Pressure Transmission Lines, Sour Oil & Gas Service, Offshore Subsea Pipelines, Urban Gas Pipeline Network in Densely Populated Areas |
Extended Applications | Water Transmission, Slurry Conveying in Mining, Structural Piling for Bridges & Offshore Platforms, Power Plant Pipeline Engineering |
Product Advantages
Advantage | Description |
Dimension Stability | After mechanical expanding, internal stress is evenly released, high dimensional accuracy for easy on-site welding |
Reliable Weld Quality | Pre-welding + precision finishing welding, stable welding process, weld toughness and density meet strict API 5L PSL2 requirements |
Strong Pressure & Corrosion Resistance | Large thick wall design matches API 5L Grade B material, excellent low-temperature toughness, anti-stress corrosion cracking performance for harsh environment |
Convenient Inspection | Single longitudinal weld structure, easy for in-process and in-service non-destructive inspection, traceable full quality system |
Supply & Trade Information
Item | Details |
Minimum Order Quantity | 5 Metric Tons |
Delivery Time | 15 - 30 days after deposit (depends on order quantity) |
Packing | Loose packing in container, bundled with steel strips, standard API marking on pipe body |
Certifications | API 5L, ISO 9001, SGS, BV, CCIC Third-party Inspection Accepted |
Customization Support | Special dimension, coating, end processing and steel grade customization available |
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