Sizing Steam Pipes (kg/h) (2024)

Steam is a compressible gas where pipe line mass flow capacity depends on steam pressure.

Steam is a compressible gas where mass flow capacity of pipe lines depends on steam pressures. Steam pipes can be sized with the table and diagram below - pressure in bar, velocity in m/s and capacity in kg/h.

  • Sizing Steam Pipes - Imperial units (lb/h)Sizing Steam Pipes (kg/h) (1)
  • Download Sizing Steam Pipes Chart in pdf-format

Steam velocities of 25 m/s are in general sufficient for most saturated steam applications.

  • Sizing Steam Pipes - Imperial units (lb/h)

For full table with larger dimensions - rotate the screen!

Sizing of Steam Pipes
Capacity (kg/h)
Gauge Pressure
(bar)
Steam Velocity
(m/s)
Nominal Pipe Size (mm)
1520253240506580100125150
Innside Diameter (mm)
15.820.926.635.040.952.562.777.9102.3128.2154.1
0.41591524425795135208359564815
2514254170961582253475989401358
4023406511215325236055595815042173
0.515916264561101144222383602869
251527437510216824037063810031449
40244369120163269384592102116042318
0.7151018295169113162250431676977
251730498411518927041671811271628
40274878135184302431666114818032605
0.91511203256761261792774787501084
251933549312721029946279612501806
40305386149204335478738127420002890
11512213459801321882915017871137
252035579813322031448483513121895
40325691157214352502775133620993032
2151731508611719327542573311511663
25295183143195322459708122119182771
4047821332293125157341133195430694434
31523406511315325336155796015082178
253867109188256421601928160025133631
40611071743004096749621485256040215809
415285080139189312445687118518602688
2547831342323165207421145197431014480
407513221437150583211871832315949617168
515345995165225371529816140722103193
2556981592753756188811360234536835321
409015725444060098814092176375258928514
6153968110191260429611944162825563693
256511418431843471410191573271342606155
40104182294509694114316302517434068169848
71544771252172954876941071184729014192
257312920936149281111571785307948356986
401182063345787871297185128564926773611178
81549861402423305447761198206632454688
258214423440455090712941997344454087814
401312313746468811451207031955510865312502
1015601051702944006599401451250239305678
2599175283489667109815672418417165509464
40159279453783106717582507386966731048015142
14158014122939653988812661955337152957650
251342353816598981480211132585619882512750
402143766101055143723683377521389911411920401

The values above are calculated for steel pipes medium thickness schedule 40. Using other standards with different inside diameters, the values above should be compensated.

Example - Capacity of 50 mm Steam Pipe

The capacity of a 50 mm steam pipe with 10 bar pressure and steam velocity 25 m/s is 1098 kg/h.

Related Topics

  • Sizing of Steam and Condensate Pipes

    Dimensions of steam and condensate pipe lines. Calculate pressure losses, recommended velocities, capacities and more.
  • Steam and Condensate

    Design of steam & condensate systems with properties, capacities, sizing of pipe lines, system configuration and more.

Related Documents

  • ANSI Schedule 40 Steel Pipes - Dimensions

    Internal and external diameters, areas, weights, volumes and number of threads for ANSI schedule 40 steel pipes.
  • EN 10255 - Non-alloy Steel Tubes for Welding and Threading - Dimensions

    Dimensions and weights of steel tubes according BS EN 10255.
  • Piping Materials - Temperature Heat Expansion and Cooling Contraction

    Expansion and contraction when cast iron, carbon and carbon molybdenum steel, wrought iron, copper, brass and aluminum pipes are heated or cooled.
  • Properties of Saturated Steam - SI Units

    Saturated Steam Table with steam properties as specific volume, density, specific enthalpy and specific entropy.
  • Recommended Velocities in Steam Systems

    The steam velocity in a steam distribution system should be within certain limits to avoid excessive wear and tear
  • Sizing Steam Pipes (lb/h)

    Steam is a compressible gas where the capacity of a pipe line depends on the size of the pipe and the steam pressure.
  • Steam consumption and condensate generation when heating liquid or gas flows
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    Calculate steam flow rate vs. kW rating.
  • Steam Consumption for some Typical Steam Heated Consumers

    Steam consumption rates for typical steam heated consumers in industries like bakeries, breweries, paper factories etc.
  • Steam Flow Rate vs. Pressure Drop - Schedule 40 Pipe

    Flow rate (lb/h) and pressure drop per 100 feet of pipe.
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    Calculating the amount of steam in non-flow batch and continuous flow heating processes.
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    Pressure drop and maximum allowable flow in steam pipes.
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    Calculate pressure drops in steam distribution pipe lines.
  • Steam Pipes - Pressure Drop vs. Steam Flow

    Steam pipes and pressure drop diagrams - imperial and metric units.
  • Steam Pipes - Sizing

    Sizing of steam pipe lines - major and minor loss in steam distribution systems.
  • Steam Pipes - Thermal Expansion

    Thermal expansion of steam pipes heated from room temperature to operation temperature (mm pr. 100 m pipe).
  • Thermal Expansion of Steam Pipes - (inches)

    Expansion of steam pipes heated from room temperature to operation temperature.

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Sizing Steam Pipes (kg/h) (2024)
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