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GB/T 222-2006 Permissible tolerances for chemical composition of steel produts (USD) via email in 1-3 business day VALID
GB/T 15712-2008 Microalloyed medium carbon steels via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 34209-2017 Stainless steel—Determination of multi-element contents—Glow discharge optical emission spectrometry (USD) via email in 1-3 business day VALID
GB/T 223.4-2008 Alloyed steel - Determination of manganese content - Potentiometric or visual titration method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 5216-1985 Technical requirements for structural steel with specified hardenability bands via email in ABOLISHED please email coc@codeofchina.com for quotation
GB 10560-1989 High tensile steels for round link chains for mines-Technical requirements (USD) via email in 1-3 business day ABOLISHED
GB/T 4223-1996 Iron and steel scraps via email in ABOLISHED please email coc@codeofchina.com for quotation
GB/T 20125-2006 Low-alloy steel - Determination of multi-element contents - Inductively coupled plasma atomic emission spectrometric method (USD) via email in 1-3 business day VALID
GB 5068-1999 Axles steel for railway locomotive and wagons via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 15712-1995 Ferritic-pearlitic engineering steels for precipitation hardening from hot-working temperature (USD) via email in 1-3 business day ABOLISHED
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