<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div id="yui_3_16_0_ym19_1_1489600390533_2897">Hi All,</div><div id="yui_3_16_0_ym19_1_1489600390533_2897" dir="ltr">I am looking for a calculator to determine the maximum internal pressure a 516-70 sphere of a given size and weight can handle. </div><div id="yui_3_16_0_ym19_1_1489600390533_2897" dir="ltr">thanks'</div><div id="yui_3_16_0_ym19_1_1489600390533_2897" dir="ltr">Hank</div></div></body></html>