API 5L is a pipeline steel pipe standard established by the American Petroleum Institute. X42 and L290 are grade designations within this standard, representing a minimum yield strength of 290 MPa (megapascals). This type of steel pipe is primarily used for transporting fluid media such as oil and natural gas, requiring good strength, toughness, and weldability.
API 5L X42 PSL1 PSL2 Line Pipe Chemical Composition
| C | Si | MN | P | S | V | Nb | Ti | Other | Carbon Equivalent | |
| Max (b) | Max | Max (b) | Max | Max | Max | Max | Max | % maximum | ||
| CE(IIW) | CE(Pcm) | |||||||||
| 0.26 | – | 1.20 | 0.030 | 0.030 | (c),(d) | (c),(d) | (d) | (a) | – | – |
API L290 PSL1 PSL2 carbon steel pipe Mechanical Requirement
| Tensile Requirements on Pipe body of welded pipes | Ratio | Elongation | CVN Absorbed Energy | Heat Treatment | ||||
| Yield Strength (R10.5) | Tensile Strength (R) | R 10.5/ R | % | 0 degree celsius | ||||
| PSI | Mpa | PSI | Mpa | Max | Minimum | Min J | Min ft. lb | Wield Seam Normalizing |
| 35,500 min | 245 min | 60,200 min | 415 min | – | – | – | ||
Dimensions and Sizes of API 5L X42 Line Pipe
Test and inspection of API 5L X42 PSL1 PSL2 Line pipes
Hydrostatic Test
Bending Test
Flattening Test
CVN Impact Test
Packaging and shipping
