chromium zircomium koper legering c18141/c18150/c18400
material
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astm, aisi, jis, din, gb, engrade
---c10100, c10200, c10300, c10400, c10500, c10700 ,C10800,C10910,C10920,C10930,
C11000,C11300,C11400,C11500,C11600,C12000,C12200,C12300,C12500,C14200,C1442...