ASME/ ANSI B36.10 SCH 20 Pipe Supplier, contact us to get free quote and sample!
ASME/ ANSI B36.10 SCH 20 Pipe Sizes standard
In the terminology of pipes, the "Schedule" indicates the wall thickness of the pipe. For Schedule 20 pipe, it denotes a relatively lighter wall thickness compared to higher schedule numbers. This makes Schedule 20 pipe suitable for applications where low-pressure requirements are prevalent, and a lighter, more cost-effective option is preferable.
For instance, an sch 20 pipes dimensions of 10 inches in size having an outer diameter of 273 mm and will have sch 20 pipes thickness in mm in 6.35. Moreover, a schedule 20 pipes dimensions of 22 inches with an outer diameter of 559 mm and will have a schedule 20 pipes thickness of 9.53 mm.
We have been manufacturing this gi pipes schedule 20 thickness in mm for a long period of time. The wall of this schedule pipes are lighter and are widely used in the gravity-fed septic system, drainage, and stormwater system. It finds application in various industries for purposes such as residential plumbing, low-pressure fluid transport, and certain light-duty industrial processes.
Sch 20 Pipe Dimensions OD Wall Thickness Weight
| Nominal size [inches] | Outside diameter [inches] | Outside diameter [mm] | Wall thickness [inches] | Wall thickness [mm] | Weight [lb/ft] | Weight [kg/m] |
|---|---|---|---|---|---|---|
| 8 inches | 8.625 inches | 219.1 mm | 0.250 inches | 6.35 mm | 22.36 lb/ft | 33.31 kg/m |
| 10 inches | 10.750 inches | 273.0 mm | 0.250 inches | 6.35 mm | 28.04 lb/ft | 41.77 kg/m |
| 12 inches | 12.750 inches | 323.8 mm | 0.250 inches | 6.35 mm | 33.38 lb/ft | 49.73 kg/m |
| 14 inches | 14.000 inches | 355.6 mm | 0.312 inches | 7.92 mm | 45.61 lb/ft | 67.90 kg/m |
| 16 inches | 16.000 inches | 406.4 mm | 0.312 inches | 7.92 mm | 52.27 lb/ft | 77.83 kg/m |
| 18 inches | 18.000 inches | 457.0 mm | 0.312 inches | 7.92 mm | 58.94 lb/ft | 87.71 kg/m |
| 20 inches | 20.000 inches | 508.0 mm | 0.375 inches | 9.53 mm | 78.60 lb/ft | 117.15 kg/m |
| 22 inches | 22.000 inches | 559.0 mm | 0.375 inches | 9.53 mm | 86.61 lb/ft | 129.13 kg/m |
| 24 inches | 24.000 inches | 610.0 mm | 0.375 inches | 9.53 mm | 94.62 lb/ft | 141.12 kg/m |
| 26 inches | 26.000 inches | 660.0 mm | 0.500 inches | 12.70 mm | 136.17 lb/ft | 202.72 kg/m |
| 28 inches | 28.000 inches | 711.0 mm | 0.500 inches | 12.70 mm | 146.85 lb/ft | 218.69 kg/m |
| 30 inches | 30.000 inches | 762.0 mm | 0.500 inches | 12.70 mm | 157.53 lb/ft | 234.67 kg/m |
| 32 inches | 32.000 inches | 813.0 mm | 0.500 inches | 12.70 mm | 168.21 lb/ft | 250.64 kg/m |
| 34 inches | 34.000 inches | 864.0 mm | 0.500 inches | 12.70 mm | 178.89 lb/ft | 266.61 kg/m |
| 36 inches | 36.000 inches | 914.0 mm | 0.500 inches | 12.70 mm | 189.57 lb/ft | 282.27 kg/m |
Sizes of SCH 20 pipes
Supplier & distributor of Schedule 20 ERW Pipes in China
| NPS | 1/2 | 3/4 | 1 | 1¼ | 1½ | 2 | 2½ | 3 | 3½ | 4 |
| DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 90 | 100 |
Schedule 20 vs. Schedule 40: Which One to Choose?
One of the most frequent questions from procurement managers is whether to use SCH 20 or SCH 40.
- Pressure Rating: SCH 40 has a thicker wall and can handle significantly higher internal pressures. SCH 20 is reserved for low-pressure or gravity-fed systems.
- Cost Efficiency: SCH 20 pipes are lighter, meaning lower raw material costs and reduced shipping fees-ideal for large-scale structural projects.
- Installation: Due to the thinner wall, welding SCH 20 requires precise heat control (using GTAW/TIG or GMAW/MIG) to prevent burn-through.
Key Applications of SCH 20 Pipe
Because of its lightweight and high-tensile properties, Schedule 20 steel pipe is the preferred choice in:
- Low-Pressure Fluid Transport: Water circulation, cooling systems, and air lines.
- Construction & Infrastructure: Handrails, scaffolding, and structural columns.
- Oil & Gas: Used in non-critical auxiliary lines and low-pressure utility services.
- Shipbuilding: For piping systems where weight reduction is a priority.
