钢管公称直径、外径、壁厚表
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- HGT 20519-2009 化工工艺设计施工图内容和深度统一规定公称通径
Norminal Pipe Size DN 外径
Outside Diameter 公 称 壁 厚 T
Norminal Wall Thickness
A系列
Series A B系列
Series B sch5s sch10s sch20s LG sch20 sch30 STD sch40 sch60 xs sch80 sch100 sch120 sch140 sch160
15 21.3 18 1.6 2.
2.6 --- --- --- --- 2.9 --- --- 3.6 --- --- --- 4.5
20 26.9 25 1.6 2.1 2.6 --- --- --- --- 2.9 --- --- 4 --- --- --- 5.6
25 33.7 32 1.6 2.8 3.2 --- --- --- --- 3.2 --- --- 4.5 --- --- --- 6.3
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