API 5L X70 PSL2 specification

API 5L X70 PSL2 (Pipe Specification Level 2) is a high-strength carbon steel pipe that conforms to the American Petroleum Institute (API) 5L specifications. It is commonly used in the oil and gas industry for transportation of natural gas, petroleum, and other fluids. Here are some key specifications and characteristics of API 5L X70 PSL2:

Chemical Composition:

Carbon (C): ≤0.28%

Manganese (Mn): ≤1.40%

Phosphorus (P): ≤0.025%

Sulfur (S): ≤0.015%

Silicon (Si): ≤0.40%

Niobium (Nb): ≤0.10%

Vanadium (V): ≤0.10%

Titanium (Ti): ≤0.06%

Aluminum (Al): ≤0.06%

Copper (Cu): ≤0.50%

Nickel (Ni): ≤0.50%

Chromium (Cr): ≤0.50%

Molybdenum (Mo): ≤0.15%

Mechanical Properties:

Yield Strength: ≥485 MPa (70,300 psi) minimum

Tensile Strength: ≥570 MPa (82,700 psi) minimum

Elongation: ≥18% minimum (for uniform elongation measurement)

Impact Testing: Charpy V-notch impact testing is conducted to assess the material's resistance to brittle fracture at different temperatures. The standard test temperature is -20°C (-4°F), but it can be tested at lower temperatures upon agreement between the buyer and manufacturer.

PSL2 Requirements:

PSL2 specifies additional requirements compared to PSL1, including stricter chemical composition limits, mandatory nondestructive testing (such as ultrasonic inspection and radiographic examination), stricter dimensional tolerances, and additional supplementary requirements like sour service and off-shore service.

Size Range:

API 5L X70 PSL2 pipes are available in various sizes, ranging from nominal pipe size (NPS) 2" to NPS 48" (DN 50 to DN 1200), with wall thicknesses ranging from Schedule 10 to Schedule 160.

It's important to note that API 5L X70 PSL2 is a well-known and widely used specification, but specific requirements may vary based on project-specific needs and customer specifications. It is recommended to refer to the latest edition of the API 5L specification or consult with the manufacturer or supplier for precise information regarding API 5L X70 PSL2 pipes.