Standard Practices for
Production and Preparation of Gray Iron Castings for
Porcelain Enameling1

This standard is issued under the fixed designation C 660; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

Click below to download Astm C 660 – 81 (Reapproved 1999) Pdf free download

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Click here to download Astm C 659 – 90 (Reapproved 2003) Pdf Free Download