The purpose of this specification is to provide a guide for the production of transport pipes. Products made under API 5L optics carry gas, oil, and water in the natural gas and oil industry.
API 5L specifications include standards for Seamless, ERW, and SAW pipes. The detailed list of pipe types under API 5 L includes
API 5L covers specifications for two product specification levels- PSL 1 and PSL 2, which set varying technical requirements for pipe production. For example, PSL 2 establishes standards for pipe optics, including maximum yield and tensile strength, NDT, notch strength, and carbon equivalent. Meanwhile, PSL establishes the general standard for line pipe production.
API 5L pipes are classified into various grades according to pipe schedule, strength, and service requirements. The pipe grades covered by these specs can carry petroleum, gas, oil, and water. As a result, these products have major applications in on-shore, off-shore, and sour projects in the oil and gas industry. The grades under API 5 L consist of
PSL 1 Pipes cover Grades A25 through X70.
PSL 2 Pipes cover Grades B through X80.
| Elements | Maximum Element Content in Percentage (%) | |||||||||
| Grade B | Grade A | Grade X42 | Grade X46 | Grade X52 | Grade 56 | Garde 60 | Gard0e 65 | Grade 70 | Grade A25 | |
| Carbon | 0.26% | 0.22% | 0.26% | 0.26% | 0.26% | 0.26% | 0.26% | 0.26% | 0.26% | 0.21% |
| Manganese | 1.20% | 90% | 1.30% | 1.40% | 1.40% | 1.40% | 1.40% | 1.45% | 1.65% | 60% |
| Sulfur | 0.030% | 0.030% | 0.030% | 0.030% | 0.030% | 0.030% | 0.030% | 0.030% | 0.030% | 0.030% |
| Phosphorous | 0.030% | 0.030% | 0.030% | 0.030% | 0.030% | 0.030% | 0.030% | 0.030% | 0.030% | 0.030% |
| Grades | Minimum Yield Strength | Minimum Tensile Strength |
| Grade A25 | 25 psi | 45 psi |
| Grade A | 30 psi | 48 psi |
| Grade B | 35 psi | 60 psi |
| Grade X42 | 42 psi | 60 psi |
| Grade X46 | 46 psi | 63 psi |
| Grade X52 | 52 psi | 66 psi |
| Grade X56 | 56 psi | 71 psi |
| Grade X60 | 60 psi | 75 psi |
| Grade X65 | 65 psi | 77 psi |
| Grade X70 | 70 psi | 82 psi |
| Grade X80 | 80 psi | 90 psi |
