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规格尺寸n尺寸编号n直径（英寸）n直径（毫米）n展开长度（毫米）n全长（毫米）nn06#n0.6n13n20n40nn08#n0.8n19n30n60nn25#n1n25n40n80nn32#n1.3n32n50n100nn38#n1.5n38n60n120nn43#n1.8n43n70n140nn50#n2n50n80n160nn60#n2.5n60n95n190nn70#n2.8n70n110n220nn80#n3.2n80n125n250nn90#n3.5n90n140n280,nand some have size like this：nthose with diameter of 320#nis 40''nand the diameter is 102,nand the full length is 160,nand those with diameter of 400# are 50''nand the diameter is 126,nand those with diameter of 500# are 63''nand the diameter is 160,nand those with diameter of 600# are 75''nand the diameter is 190.nThe length and diameters of different size standards are shown above.nThe rest are left unchanged.nThe original text is preserved as it is.