兑水 发表于 2009-9-9 08:36:33

ASTM A 796-2006 雨水管和卫生污水管及其它地下埋设管道...

A796/A796M-03 Standard Practice for Structural Design of Corrugated Steel Pipe, Pipe-Arches, and Arches for Storm and Sanitary Sewers and Other Buried Applications
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