焊接钢管尺寸及重量公称口径外径mmin681015202532405065801001251501/81/43/81/23/411 1/41 1/222 1/234561013.51721.2526.7533.542.25486075.588.5114140165普通管壁厚理论质量（mm)（kg/m)20.392.250.622.250.822.751.262.751.633.252.423.253.133.53.843.54.883.756.6448.34410.85413.424.517.81加厚管壁厚理论质量（mm)（kg/m)2.50.462.750.732.750.973.251.453.52.0142.9143.784.254.584.56.164.57.884.759.81513.445.518.245.521.63
