API 5L X46 pipe is a low medium grade piping material in API 5L standard specifications. Also called L320 pipe, as it’s yield strength minimum in 320 Mpa (46,400 psi). Minimum tensile strength 435 Mpa.
API 5L X46 covers manufacturing types in seamless and welded (ERW, SAW) types, both applied for oil and gas transmissions.
It contains two product specification levels PSL1, PSL2. (Including the material for sour services uses in PSL2)
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API 5L X46 PSL2 Pipe Grade range | Grade B PSL2 X46 |
API 5L X46 Pipe Material Size range | 4.5 |
Type of X46 Steel Pipe ends | Plain-end |
API 5L X46 PSL2 Line Pipe Seam welding | All methods except continuous and laser welding |
Electric welds: welder frequency | 100kHz minimum |
Chemistry: max C for API 5L X46 Grade B seamless pipe | 0.24% |
Chemistry: max C for API 5L X46 welded pipe | 0.22% |
HIC Tested X46 Pipe Chemistry: max P | 0.025% |
API 5L X46 Grade B Pipe Chemistry: max S | 0.015% |
HIC Tested X46 Pipe Fracture toughness | Required for all grades |
Nondestructive inspection of X46 seamless pipe | SR4 mandatory |
Repair by welding of Grade X46 PSL1 Pipe body, plate by skelp | Prohibited |
Repair by welding of weld seams without filler meta | Prohibited |
API 5L Grade X46 Pipe Certification | Certificates (SR 15.1) mandatory |
API 5L X46 Pipe Carbon equivalent | Maximum required for each grade |
X46 Steel Pipe Yield Strength, maximum | Maximum required for each grade |
API 5L X46 PSL2 Pipe UTS, maximum | Maximum required for each grade |
Grade X46 PSL2 Pipe Traceability | Traceable after completion of tests (SR 15.2) mandatory |