Cylindrical shaped glass preforms of high-purity silica glass (quartz): -with an optical core made of germanium-doped silica glass (quartz), intended for the production of low-loss optical fiber: -with a length of not more than 2500 mm, -with a diameter of 115 mm or more but not more than 139 mm, -on one side with a conical end -on the other side with a handle with a diameter of 25,4 mm, coated at the end with aluminium oxide
Part of: 70022090 — Other
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