(150保温钢管价格)
DN100ф108mmDN125ф133mmDN150ф159mmDN200ф219mmDN250ф273mmDN300ф325mmDN350ф377mmDN400ф426mmDN450ф478mmDN500ф529mmDN600ф630mm一般来说,管子的直径可分为外径内径公称直径预制直埋保...
DN100ф108mmDN125ф133mmDN150ф159mmDN200ф219mmDN250ф273mmDN300ф325mmDN350ф377mmDN400ф426mmDN450ф478mmDN500ф529mmDN600ф630mm一般来说,管子的直径可分为外径内径公称直径预制直埋保...