sigh007 发表于 2012-3-31 17:42:02

MIL-S-416D


                   MIL-S-416D, MILITARY SPECIFICATION, STRAINER, WELL, WATER, WIRE-WOUND (23 AUG 1979)., This specification covers 10-foot long, wire-wound, telescopic type strainers used in connection with water-well construction.         
         
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