| 摘要 |
PROBLEM TO BE SOLVED: To provide a block product superior in corrosion resistance, superior in applicability to an environment, and easier in a molding process than a concrete product, in various block products such as a mattress block, a revetment block and a foundation consolidation block applied to the seashore and rivers or the shore of these. SOLUTION: This block product is provided by forming an iron frame 14 in a frame shape, and the iron frame 14 is composed of graphite-like cast iron. A spherical graphite cast iron product written in JIS G 5502 is desirable as this cast iron product. COPYRIGHT: (C)2008,JPO&INPIT
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