(无缝方管的各种型号规格)

无缝钢管规格型号直径表如下DN公称直径,Ф外径DN15ф22mm,DN20ф27mmDN25ф34mm,DN32ф42mmDN40ф48mm,DN50ф60mmDN65ф7673mm,DN80ф89mmDN100ф114mm,DN125ф140mmDN150ф168mm,D。方管的规格型号主要有1515毫米252...