Pipe Wall Thickness Calculation (ASME B31.3)


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	Pipe Wall Thickness Calculation (ASME B31.3)

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	Inputs
	Calculation Option
	NPS
	Schedule
	Design Pressure P bar (gauge)
	Design Temperature T_design °C
	Material Specification
	Longitudinal Weld Type
	Weld Joint Str. Redn Factor W
	Corrosion Allowance ca mm
	Thread/Groove Depth h mm
	Manuf. Undertolerance ut %



	Results
	NPS
	Inner Dia d mm
	Outer Dia D mm
	Nominal thickness t_n mm
	Undertol. thickness t_n*ut/100 mm
	Minimum thickness T = t_n(1-ut/100) mm
	Allowable Stress S bar
	Coefficient Y Y
	Weld Joint Quality Factor E
	Design pressure thickness t mm
	Total Mechanical Allowance c=ca+h mm
	Required thickness t_m mm
	Acceptability of Selection T > t_m

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