Tube To Tube Sheet Expansion Formula 3v33l

Hi, Please find below the formula for tube expansion percentage.With this you can fix the max.allowable expansion percentage in relate to the thickness of the tube after expansion. also you can find the thickness of the tube after expansion by using this formuls(Tube ID after expansionTube OD / 2).In no case it will not be less than the design thickness of the tube. The tube longitudinal and compressive stress shall be calculated by TEMA RCB7.23 or 7.24. Formula. K = ((d2-d1) - (H-D))/2T X 100% Suppose K = {(16.35-15.75) – (19.35-19.05)/2*1.65} * 100 K = {(0.6) – (0.3)/3.3} * 100 K = {0.3/3.3} * 100 K = 9.09% d2 = H-2T+(Kx2T/100) d2 = 19.35-3.3 + (9.09*3.3/100) d2 = 19.35 – 3.3 + 0.3 d2 = 16.35 Where, K-Expansion percentage,decrement of tube thickness T-Tube wall thickness d1-Inside diameter of the tube before expanding d2-Inside diameter of the tube after expanding D-outside diameter of the tube H-Inside diameter of the tube sheet hole Thanks & Regards,