Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Steel Tubes - Working Pressures

Normal maximum working pressures for steel tubes - in psi (lb/in2) and kPa (kN/m2)

Sponsored Links

The working pressures below are conservative estimates. Be aware that domestic rules may give lower limits.

Nominal boreWaterSteam / Air, screwed connectionsSteam / Air, welded connections
LightMediumHeavyMediumHeavyMediumHeavy
inchesmmpsikPapsikPapsikPapsikPapsikPapsikPapsikPa
1/4 8 150 1000 300 2000 350 2400 150 1000 175 1200 250 1750 300 2000
3/8 10 150 1000 300 2000 350 2400 150 1000 175 1200 250 1750 300 2000
1/2 15 150 1000 300 2000 350 2400 150 1000 175 1200 250 1750 300 2000
3/4 20 150 1000 300 2000 350 2400 150 1000 175 1200 250 1750 300 2000
1 25 150 1000 300 2000 350 2400 150 1000 175 1200 250 1750 300 2000
1 1/4 32 125 850 250 1750 300 2000 125 850 150 1000 200 1400 300 2000
1 1/2 40 125 850 250 1750 300 2000 125 850 150 1000 200 1400 300 2000
2 50 100 700 200 1400 250 1750 100 700 125 850 200 1400 300 2000
2 1/2 65 100 700 200 1400 250 1750 100 700 125 850 200 1400 300 2000
3 80 100 700 200 1400 250 1750 100 700 125 850 150 1000 200 1400
4 100 80 550 150 1000 200 1400 80 550 100 700 150 1000 200 1400
5 125 150 1000 200 1400 80 550 100 700 150 1000 200 1400
6 150 125 850 150 1400 60 400 80 550 125 850 75 1200
  • 1 psi = 1 lb/in2
  • 1 kPa = 1 kN/m2
Sponsored Links

Related Topics

Related Documents

Tag Search

  • en: steel tubes pipes working pressures
Sponsored Links

Search the Engineering ToolBox

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Translate this page to
About the Engineering ToolBox!
.

close

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

1 22

Sponsored Links