(一)中國鋅錠的牌號及化學(xué)成分見表3-19。表3-19鋅錠的牌號及化學(xué)成分牌號化學(xué)成分(質(zhì)量分?jǐn)?shù))/%標(biāo)準(zhǔn)號Zn(不小于)雜質(zhì)含量(不大于)PbCdFeCuSnAlAsSb總和Zn99.99599.9950.0030.0020.0010.0010.001---0.0050GB/T470-1997Zn99.99*99.990.0050.0030.0030.0020.001---0.010Zn9 (共 10712 字) [閱讀本文] >>