N.P.S OD(mm) Thickness(mm) I.D(mm) Length(m) C.S.A (mm^2) C.S.A( sq inches)12" 300 10.31 279.38 75.04 61302.83 95.0214" 350 11.12 327.76 64.32 84372.67 130.816" 400 12.7 374.6 56.28 110211.12 170.818" 450 14.27 421.46 50.03 139509.12 216.220" 500 15.08 469.84 45.03 173376.35 268.722" 550 15.87 518.26 40.93 210952.78 327

Heat Density(BTU/hr/sq. in)16350.7411878.039096.297186.165782.094751.21