如题所述
DN250 б=7.0mm
DN200 б=6.0mm
DN150 б=4.5mm
DN125 б=4.0mm
DN100 б=4.0mm
DN80 б=4.0mm
DN65 б=4.0mm
DN50 б=3.8mm
DN40 б=3.5mm
DN32 б=3.5mm
DN25 б=3.2mm
DN20 б=2.8mm
DN15 б=2.8mm
热镀锌钢管