API Class 5l X65 pipe can be either seamless or welded in production types.
Mainly used in oil and gas transportation systems. The pipe has a minimum yield strength of 65ksi, hence the designation X65. It also has a minimum tensile strength of 77ksi.
API 5L grade X65 pipe is one of the high strength pipes in API 5L grade. Where appropriate, these pipes may also be used for water pipes. This material uses manganese, phosphorus and silicon as its main alloy components and is low carbon. Product specifications include PSL1 and PSL2 levels.
API 5l X65 Psl2 is less common but has high mechanical properties. Nominal bore sizes for pipe are 3/8-inch to 30-inch. Pipe lengths up to 13m are available in single random, double random and customized lengths. API 5l X65 DSAW tubes are also available in plain end, bevel end and coupled end types.
Chemical Composition of API 5L X65 PSL2 Seamless Pipe :
| Mass fraction, based upon heat and product analysis % maximum | CARBON EQUIVALENT a | ||||||||||
| % MAXIMUM | |||||||||||
| Cb | Si | Mnb | P | S | V | Nb | Ti | Other | CEIIW | CEPcm | |
| SEAMLESS & WELDED PIPES | |||||||||||
| L450Q or X65Q | 0.18f | 0.45f | 1.7f | 0.025 | 0.015 | g | g | g | h | 0.43 | 0.25 |
| WELDED Pipe | |||||||||||
| L450M OR X65M | 0.12f | 0.45f | 1.6f | 0.025 | 0.015 | g | g | g | h | 0.43 | 0.25 |
Mechanical properties of API 5L X65 PSL2 Seamless Pipe
| Y.S | T.S | ELONGATION |
| Mpa(psi) | Mpa(psi) | |
| min | min | min |
| 450(65 300) | 600(87 000) | 23% |
| IMPACT TEST | |
| AVG. ABSORBED ENERGY | IND. ABSORBED ENERGY |
| Min.(joules) | Min.(joules) |
| 27 | 20 |
