API 5L X42 Pipe Specification

API 5L X42 is a grade of steel pipes designated by the American Petroleum Institute (API) for use in conveying gas, water, and oil in the petroleum and natural gas industries. Below are some key specifications for API 5L X42 pipes:

Chemical Composition:

The maximum allowable composition for API 5L X42 pipes includes:

Carbon: 0.26%

Manganese: 1.30%

Phosphorus: 0.030%

Sulfur: 0.030%

Silicon: 0.45%

Mechanical Properties:

Yield Strength: Minimum yield strength of 290 MPa (42,100 psi)

Tensile Strength: Minimum tensile strength of 415 MPa (60,200 psi)

Size Range:

Nominal Pipe Size (NPS): 1/2" to 48"

Schedule: SCH 10, SCH 20, SCH 30, STD, SCH 40, SCH 60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS

Manufacturing Process:

API 5L X42 pipes are typically manufactured through either seamless or welded processes. Seamless pipes are produced without welding seams, while welded pipes are made by welding the seam after forming.

Usage:

API 5L X42 pipes are commonly used for transporting oil, gas, and water in various industries, including oil and gas exploration and production, refineries, and pipeline construction projects.

Additional Testing:

API 5L X42 pipes may undergo additional testing such as hydrostatic testing, non-destructive testing (NDT), and mechanical tests to ensure quality and compliance with API standards.

Standards:

API 5L X42 pipes conform to the specifications outlined in the API 5L standard, which sets requirements for the manufacture of line pipes for conveying oil, gas, and water.

Understanding these specifications is crucial when selecting and specifying API 5L X42 pipes for specific applications to ensure they meet the necessary performance, quality, and safety standards required in the industry.