API 5L X70 specification

API 5L X70 is a specification for seamless and welded steel line pipe. Here are some key specifications of API 5L X70:

API 5L X70 Chemical Composition:

Carbon (C): Maximum of 0.28%

Manganese (Mn): Maximum of 1.40%

Phosphorus (P): Maximum of 0.030%

Sulfur (S): Maximum of 0.030%

Silicon (Si): Maximum of 0.45%

Nickel (Ni): Maximum of 0.50%

Chromium (Cr): Maximum of 0.50%

Copper (Cu): Maximum of 0.50%

Vanadium (V): Maximum of 0.10%

API 5L X70 Mechanical Properties (Minimum):

Yield Strength: 485 MPa (70,300 psi)

Tensile Strength: 570-760 MPa (82,700-110,200 psi)

Elongation: Minimum of 18% (for longitudinal test pieces)

Impact Test: The standard requires minimum average absorbed energy values at 0°C (32°F) of 27 J (20 ft-lbf) for longitudinal tests and 20 J (15 ft-lbf) for transverse tests.

API 5L X70 Dimensions and Sizes:

Outer Diameter (OD): Ranges from 2" to 48" (60.3mm to 1219mm)

Wall Thickness (WT): Schedule 10 to Schedule 160 and XXS (2.11mm to 59.54mm)

Manufacturing Method: API 5L X70 pipes can be produced through hot rolling or cold drawing processes. It can be supplied as seamless or welded pipes.

API 5L X70 is commonly used for transporting oil, gas, and water in the petroleum and natural gas industries. It is known for its high strength and good mechanical properties, making it suitable for demanding pipeline applications.