Today is Sat, Feb 4th, 2012 Engineering Tools > Tubesheet Layout
	Shell inside diameter mm (150 - 1500) Tube outside diameter mm (10 - 52) Tube pitch mm (TubeOD - 65) Pitch pattern 30 45 60 90 degree (30, 45, 60 or 90) Number of passes 1type1 2type1 4type1 4type2 4type3 6type1 6type2 8type1 8type2 8type3 (1, 2, 4, 6, 8) Distance tube to shell mm (6 - 60) Distance pitch from partition groove mm (TubeOD/2 - Pitch*2) Distance impingement plate mm (0 - Shell ID/3)               Note: calculation in some cases corrects for symmetry which can result in differences in tubesheet layout and number of tubes per pass. Correction for items such as tie-rods and sliding plates are not included. No warranty and for study purposes only. Results should be optimized, checked and approved by qualified engineer.
	Tubesheet sketch, with shell inside diameter and tubes (not to scale):