Schedule 80 pipe is thicker than schedule 40 pipe.
Schedule 40 steel pipe dimensions pdf.
Pipe schedule for stainless steel pipe.
However some process piping utility facilities and civil piping may require higher schedule numbers depending on the pressures used.
Pressure loss in steel pipes schedule 40 water flow and pressure loss in schedule 40 steel pipes imperial and si units gallons per minute liters per second and cubic meters per hour sizing steam pipes kg h steam is a compressible gas where pipe line mass flow capacity depends on steam pressure.
That means with an increase in service pressure schedule number will increase which is a pipe wall thickness designator.
Steel pipe weight chart schedule 40 and 80 dimensions chart nps outside diameter wall thickness sched weight weight nps outside diameter wall thickness sched weight weight in mm in mm kg mtr lb ft in mm in mm kg mtr lb ft 1 2 0 840 21 0 109 2 769 40 std 1 268 0 851 16 16 000 406 0 188 4 775 47 290 31 748.
Cost of stainless steel.
Look at the above formula of schedule number allowable stress for material at a given temperature is fixed.