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GB/T 13819-1992 Copper alloy castings via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB 1176-1987 Specification for cast copper alloys via email in ABOLISHED please email coc@codeofchina.com for quotation
GB/T 3884.19-2017 (USD) via email in 1-3 business day VALID
YS/T 990.17-2015 (USD) via email in 1-3 business day VALID
GB/T 33948.1-2017 Method for chemical analysis of copper-steel composite metal—Part 1:Determination of copper content—Iodine titration method (USD) via email in 1-3 business day VALID
YS/T 814-2012 Test method for stress corrosion resistance of brass finished products (USD) via email in 1-3 business day VALID
GB/T 5121.19-1996 Copper and copper alloys-Determination of silver content (USD) via email in 1-3 business day ABOLISHED
GB/T 5121.16-2008 Methods for chemical analysis of copper and copper alloys—Part 15:Determination of cobalt content (USD) via email in 1-3 business day VALID
YS/T 260-2004 Copper-beryllium master alloy ingot (USD) via email in 1-3 business day ABOLISHED
GB/T 5121.26-2008 Methods for chemical analysis of copper and copper alloys - Part 26:Determination of mercury content (USD) via email in 1-3 business day VALID
GB/T 5121.7-2008 Methods for chemical analysis of copper and copper alloys—Part 7:Determination of arsenic content (USD) via email in 1-3 business day VALID
GB/T 1176-2013 via email in VALID please email coc@codeofchina.com for quotation
GB 2067-1980 Tin-zinc-lead-bronze strips (USD) via email in 1-3 business day ABOLISHED
GB/T 33948.2-2017 Method for chemical analysis of copper-steel composite metal—Part 2:Determination of zinc content—Na2EDTA titration method (USD) via email in 1-3 business day VALID
YS/T 521.4-2009 Methods for chemical analysis of blister copper—Determination of lead,bismuth and antimony contents—Flame atomic absorption spectrometry (USD) via email in 1-3 business day VALID
GB/T 6149-1985 New constantan resistance alloy (USD) via email in 1-3 business day ABOLISHED
GB/T 14953-1994 Copper wires via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB 4427-1984 Brass rectangular bars (USD) via email in 1-3 business day ABOLISHED
GB/T 5121.8-2008 Methods for chemical analysis of copper and copper alloys—Part 8:Determination of oxygen content (USD) via email in 1-3 business day VALID
GB/T 15116-1994 Die casting copper alloys via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
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