Standard pipe dimensions, vessel wall thickness, and typical analysis ranges.
| NPS | OD (in) | Sch 40 ID | Sch 80 ID | Sch 160 ID |
|---|---|---|---|---|
| 2 | 2.375 | 2.067 | 1.939 | 1.687 |
| 3 | 3.500 | 3.068 | 2.900 | 2.624 |
| 4 | 4.500 | 4.026 | 3.826 | 3.438 |
| 6 | 6.625 | 6.065 | 5.761 | 5.187 |
| 8 | 8.625 | 7.981 | 7.625 | 6.813 |
| 10 | 10.75 | 10.020 | 9.562 | 8.500 |
| 12 | 12.75 | 11.938 | 11.374 | 10.126 |
| 16 | 16.00 | 15.000 | 14.312 | 12.812 |
| 20 | 20.00 | 18.812 | 17.938 | 16.062 |
| 24 | 24.00 | 22.624 | 21.562 | 19.312 |
| Pressure (psig) | 48" ID | 72" ID | 96" ID | 120" ID |
|---|---|---|---|---|
| 150 | 0.375 | 0.500 | 0.625 | 0.750 |
| 300 | 0.625 | 0.875 | 1.125 | 1.375 |
| 600 | 1.125 | 1.625 | 2.125 | 2.625 |
| 900 | 1.625 | 2.375 | 3.125 | 3.875 |
| 1200 | 2.125 | 3.125 | 4.125 | 5.125 |
| 1440 | 2.500 | 3.750 | 4.875 | 6.125 |
Note: Includes 0.125" corrosion allowance, uses SA-516-70 @ 100°F
| P (psia) | 0.6 SG @ 60°F | 0.7 SG @ 60°F | 0.8 SG @ 60°F | 0.9 SG @ 60°F |
|---|---|---|---|---|
| 14.7 | 0.998 | 0.998 | 0.997 | 0.997 |
| 100 | 0.987 | 0.985 | 0.982 | 0.980 |
| 500 | 0.937 | 0.925 | 0.913 | 0.901 |
| 1000 | 0.884 | 0.856 | 0.829 | 0.803 |
| 1500 | 0.860 | 0.815 | 0.773 | 0.735 |
| 2000 | 0.865 | 0.803 | 0.747 | 0.697 |
| Component | Pipeline Gas | Rich Gas | Lean Gas | LNG Feed |
|---|---|---|---|---|
| Methane | 85-95% | 60-80% | 95-98% | 85-95% |
| Ethane | 3-8% | 10-20% | 1-3% | 5-10% |
| Propane | 0.5-2% | 5-12% | 0.1-0.5% | 1-3% |
| Butanes+ | 0.2-1% | 3-8% | <0.1% | 0.5-2% |
| Nitrogen | 0.5-5% | 0.5-2% | 0.5-2% | <1% |
| CO₂ | 0.5-3% | 1-8% | 0.1-1% | <50 ppm |
| H₂S | 0-4 ppm | 0-5% | 0-4 ppm | <4 ppm |
| Water | 100-150 lb/MMscf | Saturated | <7 lb/MMscf | <0.1 ppmv |
| Application | Standard | Description |
|---|---|---|
| Piping Design | ASME B31.3 | Process Piping |
| Pipeline | ASME B31.8 | Gas Transmission |
| Vessels | ASME Sec VIII | Pressure Vessels |
| Relief Valves | API 520/521 | Sizing and Installation |
| Tanks | API 650/620 | Atmospheric and Low Pressure |
| Compressors | API 617/618 | Centrifugal and Reciprocating |
| Heat Exchangers | TEMA | Shell and Tube Design |
| Materials | NACE MR0175 | Sour Service |
| Measurement | AGA 3/7/8/9 | Gas Measurement |
| LNG | NFPA 59A | LNG Facilities |