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SCH 80 Seamless Steel Pipe, Schedule 80 Seamless Tubing

Date:2024-06-26    keywords: sch 80 seamless steel pipe, sch 80 seamless tubing, sch80 vs sch40
What is seamless steel pipe?

Seamless steel pipe (smls pipe) is a steel pipe made by heating, perforating, rolling and cooling steel billets. Compared with welded pipes, seamless steel pipes have obvious advantages in appearance and performance. First of all, its inner and outer walls are smooth, without welds and oxide scales, which not only reduces fluid flow resistance, but also prevents the fluid from being contaminated, thus ensuring better transportation quality. Secondly, seamless steel pipes have excellent strength and pressure resistance. Their structures are simpler, more durable, can withstand higher pressures and temperatures, have a longer service life, are not prone to rupture, and are more suitable for high-pressure and high-precision working environments.

What does SCH 80 mean in pipe?

SCH 80 in pipe represents wall thickness, which refers to XS thickened pipes with a pressure wall thickness less than DN200mm. Usage scenarios generally involve high temperature, high pressure, and highly corrosive conditions. The wall thickness of SCH 80 grade pipes is relatively thick, and the pressure and temperature in the use environment must comply with ASME/ANSI standards to ensure the safety and reliability of the pipeline system. SCH 80 grade piping systems are often used in the manufacture of chemical equipment, high-pressure pipelines, high-temperature heaters and some special piping systems. When designing and installing a steel pipe system, it is necessary to select the appropriate pipe number according to the actual use environment to ensure the stability and safety of the pipeline system.


sch 80 seamless steel pipe


SCH 80 steel pipes have strong resistance to high pressure, high temperature and chemical environments, and their high pressure resistance is more than twice that of SCH40, making them more suitable for use in petrochemical, natural gas and other high-pressure fluid transmission pipelines. In addition, its good corrosion resistance is unmatched by other pipes. After rigorous testing, SCH80 steel pipe can operate stably for a long time in chemical, acid and salt corrosive environments.


Features and applications of SCH 80 seamless steel pipe:

High pressure resistance, high precision, no deformation during cold bending, no cracks and flattening, no oxide scale, good tensile and impact resistance.


How to choose SCH 80 steel pipe correctly?

When selecting SCH 80 steel pipes, factors such as usage environment characteristics, working pressure, working temperature and service life need to be taken into consideration. In situations where high temperature and pressure are required or where high strength and corrosion resistance are required, it is more appropriate to choose SCH80 steel pipes; if it is in general situations, it means that SCH40 or thinner pipes can also meet the needs. SCH80 steel pipes are not only unnecessary, but also increase the cost. cost. Of course, there are various types of SCH80 steel pipes, such as galvanized, seamless, welded, etc. The corresponding pipe material and type need to be selected according to the specific environment and usage requirements.


The difference between SCH 40 pipe and SCH 80 pipe:

The main difference between SCH 40 and SCH 80 steel pipes is the wall thickness. SCH 40 pipe has a thinner wall thickness and is often used in low-pressure applications such as residential plumbing or irrigation systems. SCH 80 seamless pipe has thicker walls and is used in high-pressure applications such as industrial processes, hydraulic systems and underground piping. They are designed to handle higher pressures and withstand greater stresses than SCH 40 pipe.

Looking at specific dimensions, the wall thickness of SCH 40 pipe is approximately 0.109 inches, while the wall thickness of SCH 80 pipe is approximately 0.154 inches. This means that SCH 80 pipe is approximately 30% thicker than SCH 40 pipe. While SCH 80 pipe is stronger and more durable than SCH 40 pipe, they are also more expensive.

SCH 80 pipe has thicker walls and requires more material and more manufacturing time, which increases costs. When selecting pipe for a specific application, it is important to consider the pressure requirements and the cost-effectiveness of selecting thicker, more expensive pipe.


Pipe Sch 80 Chart, Dimensions, Weight And Pipe Wall Thickness

Pipes sch 80 chart gives dimensions of steel pipes schedule 80. Chart includes sizes in inches and in millimeters.


Nominal size 

[inches]

Outside diameter 

[inches]

Outside diameter 

[mm]

Wall thickness 

[inches]

Wall thickness 

[mm]

Weight 

[lb/ft]

Weight 

[kg/m]

1/8 0.405 10.3 0.095 2.41 0.31 0.47
1/4 0.54 13.7 0.119 3.02 0.54 0.8
1/2 0.84 21.3 0.147 3.73 1.09 1.62
3/4 1.05 26.7 0.154 3.91 1.47 2.2
1 1.315 33.4 0.179 4.55 2.17 3.24
1 1/4 1.66 42.2 0.191 4.85 3 4.47
1 1/2 1.9 48.3 0.2 5.08 3.63 5.41
2 2.375 60.3 0.218 5.54 5.02 7.48
2 1/2 2.875 73 0.276 7.01 7.66 11.41
3 3.5 88.9 0.3 7.62 10.25 15.27
3 1/2 4 101.6 0.318 8.08 12.5 18.63
4 4.5 114.3 0.337 8.56 14.98 22.32
5 5.563 141.3 0.375 9.53 20.78 30.97
6 6.625 168.3 0.432 10.97 28.57 42.56
8 8.625 219.1 0.5 12.7 43.39 64.64
10 10.75 273 0.594 15.09 64.43 96.01
12 12.75 323.8 0.688 17.48 88.63 132.08
14 14 355.6 0.75 19.05 106.13 158.1
16 16 406.4 0.844 21.44 136.61 203.53
18 18 457 0.938 23.83 170.92 254.55
20 20 508 1.031 26.19 208.87 311.17
24 24 610 1.125 30.96 296.58 442.08


Read more: Seamless Steel Pipe Manufacturing Process

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