套管(焊镀锌钢管无缝PE 管3210 D21.3X2。9 D22X3。0 14dn3250D33.7X3.2D32X3。5dn4065D42。4X3.6D38X3.5dn5065D48。3X3.6D45X3。5dn6380D60.3X3.6D57X3.5dn90100D76.1X4。0D76X4.0dn110125D88。9X4。0D89X4.0dn160150D114.3X4。0D108X4。0dn200150D139.7X4。0D133X4.0 (4。5)dn250200D168.3X6。3D159X6.0dn315219.1X6.3 (7。1)D219X6.0（7。0）dn355D273。1X7。1 （7。92）D273X7.0（8.0）dn450D323。9XD325X8.0D355。6XD355X9.0D406。4XD457X8.7尺寸 mmDN200＊150140DN250＊150160
