Standard:
API SPEC 5L - American Petroleum Institute
Purpose:
Oxygen, water, and oil delivery pipes used in the petroleum and natural gas industries
Main steel pipe grades for production:
B. X42, X52, X60, X65, X70 L245 L290 L320 L360 L390 L450 L485
| Standard | Product Level | Steel grade | Yield Strength (min), Mpa | Tensile Strength(MPa) |
| API 5L | PSL 1 | A or L210 | 210 | 335 |
| B or L245 | 245 | 415 |
| x42 or L290 | 290 | 415 |
| X46 or L320 | 320 | 435 |
| X52 or L360 | 360 | 460 |
| X56 or L390 | 390 | 490 |
| X60 or L415 | 415 | 520 |
| X70 | 483 | 565 |
| PSL 2 | BR or L245R | 245~450 | 415~760 |
| X42R or L290R | 290~495 | 415~760 |
| BN or L245N | 245~450 | 415~760 |
| X42N or L290N | 290~495 | 415~760 |
| X46N or L320N | 320~525 | 435~760 |
| X52N or L360N | 360~530 | 460~760 |
| X56N or L390N | 390~545 | 490~760 |
| X60N or L415N | 415~565 | 520~760 |
| X65N or L450N | 425~566 | 525~760 |
| X70 or L480 | 484~565 | 565~768 |
| X80 | 552~690 | 621~827 |
| Mechanical： |
| roduct Level | Steel grade | Chemical composition, % |
| C | Mn | P | S | Si | V | Nb | Ti | CEpcm |
| PSL 1 | B or L245 | ≤0.28 | ≤1.20 | ≤0.030 | ≤0.030 | - | - | - | - | - |
| x42 or L290 | ≤0.28 | ≤1.30 | ≤0.030 | ≤0.030 | - | - | - | - | - |
| X46 or L320 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | - | - | - | - | - |
| X52 or L360 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | - | - | - | - | - |
| X56 or L390 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | - | - | - | - | - |
| X60 or L415 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | - | - | - | - | - |
| X70 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | - | - | - | - | - |
| PSL 2 | BR or L245R | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | c | c | ≤0.04 | ≤0.25 |
| X42R or L290R | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.06 | ≤0.05 | ≤0.04 | ≤0.25 |
| BN or L245N | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | c | c | ≤0.04 | ≤0.25 |
| X42N or L290N | ≤0.24 | ≤1.30 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.06 | ≤0.05 | ≤0.04 | ≤0.25 |
| X46N or L320N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.07 | ≤0.05 | ≤0.04 | ≤0.25 |
| X52N or L360N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | ≤0.25 |
| X56N or L390N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | ≤0.25 |
| X60N or L415N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | - |
| X65N or L450N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | - |
| X70N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | - |
| X80 | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | - |
| List of Chemical Elements for Pipeline Pipes: |
| standard | the name of a shop | Tensile strength (MPa) | Yield strength (MPa) | yield ratio | Elongation rate (%) | Impact energy at 0 ℃ | Heat treatment status | Mechanical properties: |
| Akv(J) |
| API SPEC 5L | L245/B | ≥415 | 245~440 | ≤0.80 | 22 | ≥40 | normalizing |
| GB/T9711 |
| API SPEC 5L | L290/X42 | ≥415 | 290~440 | ≤0.80 | 21 | ≥40 | normalizing |
| GB/T9711 |
| API SPEC 5L | L360/X52 | ≥460 | 360~510 | ≤0.85 | 20 | ≥40 | normalizing |
| GB/T9711 |
| API SPEC 5L | L415/X60 | ≥520 | 415~565 | ≤0.85 | 18 | ≥40 | normalizing |
| GB/T9711 |
| API SPEC 5L | L450/X65 | ≥535 | 450~570 | ≤0.90 | 18 | ≥40 | Quenching+tempering |
| GB/T9711 |
| API SPEC 5L | L485/X70 | ≥570 | 485~605 | ≤0.90 | 18 | ≥40 | Quenching+tempering |
| GB/T9711 |
| Steel pipe type | Outer diameter of steel pipe (D) | Steel pipe wall thickness (S) |
|
| Dimensional tolerance: |
| Tube body | Outer diameter of steel pipe (mm) | Allowable deviation (mm) | Outer diameter of steel pipe (mm) | Allowable deviation (mm) |
| ≥ 60.3 and S<20 | ±0.75% | ≤73.0 | +15%，-12.5% |
|
| ≥ 60.3 and S ≥ 20 | ±1.00% | >73.0 and S<20 | +15%，-12.5% |
|
|
| >73.0 and S ≥ 20 | +17.5%，-10 |
|
| Nominal Size | Outside Diameter | Wall Thickness | Plain-end Weight | lb/ft | kg/m |
| American Petroleum Institute Standard (API SPEC 5L) Line Pipe Specification Table |
|
| inch | mm | inch | mm |
| 0.405 | 0.405 | 10.29 | 0.095 | 2.4 | 0.31 | 0.47 |
| 0.54 | 0.54 | 13.72 | 0.088 | 2.2 | 0.43 | 0.62 |
| 0.54 | 13.72 | 0.119 | 3 | 0.54 | 0.79 |
|
| 0.675 | 0.675 | 17.15 | 0.091 | 2.3 | 0.57 | 0.84 |
| 0.675 | 17.15 | 0.126 | 3.2 | 0.74 | 1.1 |
|
| 0.84 | 0.84 | 21.34 | 0.109 | 2.8 | 0.85 | 1.28 |
| 0.84 | 21.34 | 0.147 | 3.7 | 1.09 | 1.61 |
|
| 1.05 | 1.05 | 26.67 | 0.113 | 2.9 | 1.13 | 1.7 |
| 1.05 | 26.67 | 0.154 | 3.9 | 1.48 | 2.19 |
|
| 1.315 | 1.315 | 33.4 | 0.133 | 3.4 | 1.68 | 2.52 |
| 1.315 | 33.4 | 0.179 | 4.6 | 2.17 | 3.21 |
|
| 1.66 | 1.66 | 42.2 | 0.145 | 3.7 | 2.72 | 3.43 |
| 1.66 | 42.2 | 0.191 | 4.9 | 3 | 4.51 |
|
| 1.9 | 1.66 | 42.2 | 0.382 | 9.7 | 5.22 | 7.77 |
| 1.9 | 48.3 | 0.145 | 3.7 | 2.72 | 4.07 |
|
| 1.9 | 48.3 | 0.2 | 5.1 | 3.63 | 5.43 |
|
| 1.9 | 48.3 | 0.4 | 10.2 | 6.41 | 9.58 |
|
| 2 3/8 | 2.375 | 60.3 | 0.109 | 2.8 | 2.64 | 3.97 |
| 2.375 | 60.3 | 0.125 | 3.2 | 3 | 4.51 |
|
| 2.375 | 60.3 | 0.141 | 3.6 | 6.36 | 5.03 |
|
| standard | the name of a shop | Chemical composition (%) | CEV(%) |
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| Chemical composition: |
| C | Si | Mn | P | S | V | Nb | Ti |
|
|
|
| API SPEC 5L | B | ≤0.16 | ≤0.40 | ≤1.10 | ≤0.020 | ≤0.010 | - | - | - | ≤0.42 |
| GB/T9711.2 |
| X42 | ≤0.17 | ≤0.40 | ≤1.20 | ≤0.020 | ≤0.010 | ≤0.05 | ≤0.05 | ≤0.04 | ≤0.42 |
|
| X52 | ≤0.20 | ≤0.45 | ≤1.60 | ≤0.020 | ≤0.010 | ≤0.10 | ≤0.05 | ≤0.04 | ≤0.45 |
|
| X60 | ≤0.21 | ≤0.45 | ≤1.60 | ≤0.020 | ≤0.010 | ≤0.15 | ≤0.05 | ≤0.04 | 协议 |
|
| X65 | ≤0.16 | ≤0.45 | ≤1.60 | ≤0.020 | ≤0.010 | ≤0.06 | ≤0.05 | ≤0.06 | ≤0.45 |
|
| X70 | ≤0.16 | ≤0.45 | ≤1.70 | ≤0.020 | ≤0.010 | ≤0.06 | ≤0.05 | ≤0.06 | ≤0.45 |
|
Indicate:1.0.015%≤Altot<0.06%;N≤0.012%;Al/N≥2/1;Cu≤0.25%;Ni≤0.30%;Cr≤0.30%;Mo≤0.10%
2.V+Nb+Ti≤0.15
3.X60、X65、X70After negotiationMo≤0.35% |
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