套管通径规最小尺寸一览表套管规格外径mm壁厚mm标准通径规最小尺寸mm代号 1代号 2长度直径4-1/29.50114.305.21152100.74-1/210.50114.305...
无缝钢管标准公称通径与公称壁厚表公称通径Nominal Pipe Size 外径Outside Diameter 公称壁厚 T Norminal Wall Thickness NPS D...
(1)管件尺寸与阀门通径及英寸对照表:直径英寸DN通径(mm)管道外径(mm)1/4″813.73/8″1017.141/2″1521.33/4″2026.71″2533.41.2″3242....