What is API 5L GR B carbon equivalent?
API 5L B grade pipe is a commonly used pipe grade in oil and gas pipeline transportation. ASTM A106 B or ASTM A53 B are its equivalent materials, which are similar in chemical composition, mechanical properties and applications.
Chemical Composition of API 5L GRB Seamless Pipes
Carbon (C) ≤ 0.28%
Manganese (Mn) ≤ 1.20%
Phosphorus (P) ≤ 0.030%
Sulfur (S) ≤ 0.030%
Mechanical Properties O API 5L GRB line pipe
Tensile Strength ≥ 415 MPa
Yield Strength ≥ 240 MPa
API 5L GRB seamless and welded steel line pipe Specifications
Diameter Range: 21.3mm ~ 762mm
Wall Thickness: 2.0mm ~ 140mm
Manufacturing & Delivery
Processes: Hot rolling, Cold drawing, Hot expanding
Delivery Condition: Hot rolled, Heat-treated
API 5L Gr.B: One of the Three Primary Pipeline Types
Typical Application Scenarios:
Long-Distance Trunk Pipelines
Diameter: 219-610mm | Wall thickness: 6-40mm
Pressure capacity supports 2,500km-class transmission systems.
Gathering Branch Networks
Smaller diameters (89-168mm) in oilfield internal networks.
Operating temp: -20℃ to 120℃.
City Gate Stations
Transition segment between high-pressure and medium-pressure urban gas networks.
Requires impact toughness ≥27J at -30℃ (vendor-certified).
Test and inspection
Packaging and shipping
