| API 5L GR. B PIPES | |||||||||
| PROPERTIES / REQUIREMENTS COMPARISON SHEET FOR PSL 1 & PSL 2 PIPES | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Sl. No. | Properties | REQUIREMENTS | ACTUAL SEAMLESS PIPES USED (Heat Nos.) | ||||||
| API 5L Gr. B PSL 1 | API 5L Gr. B PSL 2 | ||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | ||||
| 68B2583 (4″) | 88B8482 (4″) | 89B0779 (6″) | 89B5553 (6″) | 0000213182 (6″) | 0000213415 (6″) | ||||
| Chemical Composition | |||||||||
| 1 | C % max. | 0.28 | 0.24 | 0.16 | 0.18 | 0.16 | 0.168 | 0.15 | 0.15 |
| 2 | P % max. | 0.03 | 0.025 | 0.018 | 0.006 | 0.006 | 0.013 | 0.01 | 0.01 |
| 3 | S % max. | 0.03 | 0.015 | 0.002 | 0.004 | 0.003 | 0.003 | 0.003 | 0.003 |
| 4 | Mn % max. | 1.20 | 1.20 | 0.80 | 0.85 | 0.81 | 0.82 | 0.74 | 0.74 |
| 5 | Si % max. | NS | 0.40 | 0.26 | 0.29 | 0.24 | 0.24 | 0.26 | 0.26 |
| 6 | CE (Carbon Equivalent) % max. | NS | 0.43 | 0.33 | 0.348 | 0.34 | 0.347 | 0.32 | 0.32 |
| Mechanical Properties | |||||||||
| 7 | Yield Strength MPa (min. / max.) | 245 / NS | 245 / 450 | 342, 345 | 347, 344 | 336, 334 | 331, 333 | 301, 293 | 305, 294 |
| 8 | Tensile Strength MPa (min./ max.) | 415 / NS | 415 / 760 | 527, 534 | 493, 489 | 519, 507 | 497, 497 | 477, 467 | 482, 469 |
| 9 | Fracture Toughness (CVN Impact Test) | NS | Table 8/18/22 (NA) | NA | NA | NA | NA | 149, 147 (J) | 149, 187 (J) |
| Non-Destructive Inspection | |||||||||
| 10 | EM / UT / MPI | Any method | Any method | EM | EM | EM | EM | EM | EM |
| Other Tests | |||||||||
| 11 | Hydrotest | Each Pipe | Each Pipe | done | done | done | done | done | done |
| 12 | Hardness Test (max.) | Table 17 (NA) | Table 18 (NA) | 163, 165 (HV 30) | 151, 152 (HV 10) | 149, 152 (HV 30) | 148, 149 (HV 10) | 76, 75 (HRB) | 76, 75 (HRB) |
| 13 | NACE Compliance | NS | NS | written in MTC | written in MTC | written in MTC | written in MTC | written in MTC | written in MTC |
Note: NS – Not Specified; NA – Not Applicable. Only 6 Heats of Seamless Pipes are listed here.
