以下是钢管B系列尺寸对照表:尺寸(英寸)外径(毫米)壁厚(毫米)1/810.31.241/413.71.653/817.11.651/221.32.113/426.72.11133.42.771 1/442.22.771 1/248.32.77260.32.772 1/273.03.05388.93.053 1/2101.63.054114.33.055141.33.46168.33.48219.13.7610273.14.1912323.94.5714355.64.7816406.44.7818457.24.7820508.05.5422558.85.5424609.66.35