![]() Wall Thickness Selectionĭesigner should select a thickness from schedules of nominal thickness contained in Table 1 specified in ASME B36.10 and B36.19, to suit the value computed to fulfill the conditions for which the pipe is desired. Required Thickness = Design Thickness + Allowances. Next higher standard thickness value from Pipe Standards such as ASME B36.10 and ASME B36.19 is used. The value of Y may be interpolated for intermediate temperatures.Ĭalculated Design Wall Thickness should be added with Corrosion Allowance, Mechanical Allowance for Grooving, Threading etc and Manufacturing Tolerance to arrive at final value. Valid for t < D/6 and for materials shown. Value is linearly interpolated for intermediate temperatures.Value of W is taken as 1.0 at temperatures of 510☌ (950☏) and below, and 0.5 at 815☌ (1500☏) for all materials.It is applicable only for Welded pipes.Applicable as per Para 302.3.5(e) of ASME B31.3.0.85 for Electric Resistance Welded Pipes.Applicable as per ASME B31.3 Table A-1A or A-1B .E : Longitudinal Weld Joint Quality factor If you want more ASTM materials to be included, please mention in comments section below. I have included commonly used pipe materials in this calculator. These are allowable stress values for different materials at different temperatures. S : Allowable Stress value for material from Table A-1 ASME B36.10 : Welded and Seamless Wrought Steel Pipe.In this calculator, outside diameter is taken from American Pipe Standards for the selected nominal pipe diameter : P : Internal Design Guage Pressure D : Outside diameter of pipe Welded Pipes : Design Thickness t = (PD)/2(SEW+PY).Seamless Pipes : Design Thickness t = (PD)/2(SE+PY).This process pipe thickness calculator uses following formula for calculation of wall thickness. Though the formula is quite simple, finding correct values of individual factors can be tricky sometimes. Explanation of the Pipe Thickness CalculatorĪs we know, ASME B31.3 Provides formula and guidelines for calculation of pipe under pressure. ![]() Corrosion allowance for material and operating conditions.Pipe construction type : Seamless, EFW, ERW etc.This calculator calculates required thickness of a pipe under internal pressure based on criteria specified in section 302.1.1 and 302.2.2 of ASME B31.3 Pressure Piping Code. This pipe thickness calculator calculates required pipe thickness for a process pipe based on ASME B31.3 Code. Detail information about behind the back calculations is given at the end of this calculator.
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