Definition and explanation of SCH 80 pipe
SCH 80 pipe is a type of pipe manufactured according to the standards of the American National Standards Institute (ANSI) and the American Petroleum Institute (API). The name SCH 80 comes from the ratio of the wall thickness and diameter of the pipe, which indicates the strength and pressure resistance of the pipe.
Meaning of SCH
SCH is the abbreviation of the ratio of the wall thickness and diameter of the pipe, which indicates the strength and pressure resistance of the pipe. The larger the value of SCH, the thicker the wall of the pipe, the higher the strength and pressure resistance.
Meaning of SCH 80
80 is the specific value of the ratio of the wall thickness and diameter of the pipe, which indicates the strength and pressure resistance of the pipe. The value of 80 means that the wall thickness of the pipe is 80% of the diameter of the pipe.
SCH 80 Pipe Size Table
|
Nominal |
Outside diameter [inches] |
Wall thickness [inches] |
Weight [lb/ft] |
|
1/8 |
0.41 |
0.10 |
0.31 |
|
¼ |
0.54 |
0.12 |
0.0005 |
|
3/8 |
0.68 |
0.13 |
0.0010 |
|
½ |
0.84 |
0.15 |
1.00 |
|
¾ |
1.05 |
0.15 |
1.47 |
|
1 |
1.32 |
0.18 |
2.17 |
|
1 ¼ |
1.66 |
0.19 |
3.00 |
|
1 ½ |
1.90 |
0.20 |
3.65 |
|
2 |
2.38 |
0.22 |
5.02 |
|
2 ½ |
2.88 |
0.28 |
7.66 |
|
3 |
3.50 |
0.30 |
10.30 |
|
3 ½ |
4.00 |
0.32 |
12.50 |
|
4 |
4.50 |
0.34 |
14.90 |
SCH 80 Pipe Pressure Gauge
| Nominal Pipe Size (NPS) | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 |
| Outside Diameter (OD) | 0.840 | 1.050 | 1.315 | 1.660 | 1.900 |
| Schedule 80 Wall Thickness | 0.147 | 0.154 | 0.179 | 0.191 | 0.200 |
| Maximum Pressure (PSI) | 850 | 690 | 630 | 520 | 470 |
Advantages of SCH 80 Pipe
High-strength design
The standard wall thickness of SCH 80 pipe is 8.18mm, and it is made of high-grade materials, with excellent mechanical strength and structural stability. Its thickened wall design enables it to withstand extreme high pressure and high temperature environments, reducing the deformation of the pipe caused by the pressure difference between the inside and outside.
Corrosion resistance
Usually, corrosion-resistant materials such as 316L stainless steel, duplex steel or Hastelloy are selected to resist acids (such as sulfuric acid, hydrochloric acid), alkalis, salt solutions, high-temperature oxidizing or sulfiding gases.
High-pressure and high-temperature tolerance
The maximum working pressure of SCH 80 pipe at room temperature is 2500psi (172bar), and it can maintain normal operation under high pressure. It can be used normally in the temperature range of -29°C to 538°C.
