Schedule 40 carbon steel pipes are categorized based on a combination of factors including the diameter-to-wall thickness ratio, material strength, outer diameter, wall thickness, and pressure capacity.
The schedule designation, such as Schedule 40, reflects a specific combination of these factors. For Schedule 40 pipes, they typically feature a medium wall thickness, striking a balance between strength and weight. The weight of the pipe can vary based on factors such as the specific grade of carbon steel used, diameter, and wall thickness.
Adding carbon to the steel can affect the weight, with higher carbon content generally resulting in lighter pipes. However, both the wall thickness and diameter also play significant roles in determining the weight.
Schedule 40 is considered a medium pressure class, suitable for various applications where moderate pressure ratings are required. If you need more detailed information or assistance regarding Schedule 40 carbon steel pipes, feel free to contact us for further assistance.
| Nominal size | DN | Outside diameter | Outside diameter | schedule 40 thickness | |
| Wall thickness | Wall thickness | ||||
| [inch] | [inch] | [mm] | [inch] | [mm] | |
| 1/2 | 15 | 0.84 | 21.3 | 0.109 | 2.77 |
| 3/4 | 20 | 1.05 | 26.7 | 0.113 | 2.87 |
| 1 | 25 | 1.315 | 33.4 | 0.133 | 3.38 |
| 1 1/4 | 32 | 1.66 | 42.2 | 0.14 | 3.56 |
| 1 1/2 | 40 | 1.9 | 48.3 | 0.145 | 3.68 |
| 2 | 50 | 2.375 | 60.3 | 0.154 | 3.91 |
| 2 1/2 | 65 | 2.875 | 73 | 0.203 | 5.16 |
| 3 | 80 | 3.5 | 88.9 | 0.216 | 5.49 |
| 3 1/2 | 90 | 4 | 101.6 | 0.226 | 5.74 |
| 4 | 100 | 4.5 | 114.3 | 0.237 | 6.02 |
| 5 | 125 | 5.563 | 141.3 | 0.258 | 6.55 |
| 6 | 150 | 6.625 | 168.3 | 0.28 | 7.11 |
| 8 | 200 | 8.625 | 219.1 | 0.322 | 8.18 |
| 10 | 250 | 10.75 | 273 | 0.365 | 9.27 |
Schedule 40 carbon steel pipe is a standard pipe size designation used in the construction industry. It refers to the thickness of the pipe wall and is part of a standardized system used to classify pipes based on their wall thickness and pressure capacity.
In the Schedule 40 system:
Schedule 40 carbon steel pipes are commonly used for various applications, including water and gas transportation, structural support, and general industrial purposes. They are known for their strength, durability, and versatility, making them a popular choice in many construction and engineering projects.
Schedule 40 will have a certain predetermined thickness, regardless of the specific grade or composition of the steel used.
| Grade A | Grade B | |
| C, max % | 0.25 | 0.3 |
| Mn, max % | 0.95 | 1.2 |
| P, max % | 0.05 | 0.05 |
| S, max % | 0.045 | 0.045 |
| Tensile strength, min [MPa] | 330 | 415 |
| Yield strength, min [MPa] | 205 | 240 |