ASTM B117 salt purity Q.The latest revision toASTM B117calls for salt with a copper content of less than 0.3 ppm. I currently buy vacuum butter salt, but the vendor cannot certify the copper content, although his technical data sheet lists copper as <0.5 ppm max he can't certify to ...
Specif i cation for Filled Epoxy-Coated Seven-Wire Prestressing Steel Strand 1 This standard is issued under the fi xed designation A882/A882M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A...