ASTM D550-41Withdrawn Standard: ASTM D550-41 Methods of Testing Glass Spool Insulators (Withdrawn 1957)WITHDRAWN, NO REPLACEMENT There is no PDF download available at this time, however you may purchase a copy of this document from Global Engineering Documents (Email: globalcustomerservice@ihs.com; Phone: 800-854-7179 or 303-397-7956).
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