管道面积及管道保温体积计算表
材料名称钢管21.25*2.75钢管26.75*2.75钢管33.5*3.25钢管42.25*3.25钢管48*3.5钢管60*3.5钢管75.5*3.75钢管88.5*4钢管114*4钢管140*4.5钢管165*4.5钢管219钢管273钢管325钢管377钢管426钢管478钢管529钢管630钢管720规格DN15DN20DN25DN32DN40DN50DN65DN80DN100DN125DN150DN200DN250DN300DN350DN400DN450DN500DN600DN700外径（mm）21.2526.7533.542.25486075.588.51141401652192733253774278529630720长度（m）11111111111181111111180保温层厚度（mm）40表面积（m2）0.35620.08400.10520.13270.15070.18840.23710.27790.35800.43960.518122.33670.85721.02051.18381.33761.50091.66111.97822.2608保温、防潮、保护层面积(m2)S=π*(D+2.1δ+0.0082)×L
1.40保温层体积（m3）0.0081保温、防潮、保护层体积(m3)V=π*(D+1.033δ)×1.033δ×L
δ:保温层厚度 D:管道外径 L:管道长度 0.0082：捆扎线直径或钢带厚度
