JB/T 10149-2011 Sintered-steel nut and gear ring for drill chuck - Specifications

JB/T 10149-1999 Technical specification for sintered steel nut and gear ring used in drill chuck

GB/T 230.1-2009 Metallic materials—Rockwell hardness test—Part 1:Test method(scales A、B、C、D、E、F、G、H、K、N、T) GB/T 5163-2006 Sintered metal materials, excluding hardmetals—Permeable sintered metal materials—Determination of density, oil content, and open porosity GB/T 6087-2003 Key type three-jaw drill chucks GB/T 6804-2008 Sintered metal bushes—Determination of radial crushing strength GB/T 9097.1-2002 Sintered metal materials,excluding hardmetals—Determination of apparent hardness Part 1:Materials of essentially uniform section hardness JB/T 3207-2005 JBT 3207-2005 Machine tool accessories - General technical requirements for product packaging JB/T 7905-1999 Sintered metal materials (excluding hard alloy) -- sampling JB/T 8063.1-1996 Chemical Analysis Methods for Powder Metallurgy Materials and Products - Determination of Carbon in Iron-Based Materials and Products (Gas Capacity Method) JB/T 8063.2-1996 Powder metallurgy materials and products chemical analysis methods: Determination of copper in iron-based materials and products (ammonium fluoride masking-iodometric method) JB/T 8063.3-1996 Powder metallurgy materials and products chemical analysis methods Determination of molybdenum in iron-based materials and products (thiocyanate spectrophotometry) JB/T 8063.4-1996 Powder metallurgy materials and products chemical analysis methods Determination of copper in copper-based materials and products (iodide potassium-sodium thiosulfate titration method) JB/T 8063.5-1996 Powder metallurgy materials and products chemical analysis methods: Determination of tin in copper-based materials and products (sodium hypophosphite reduction - potassium sulfite titration method) JB/T 8063.6-1996 Powder metallurgy materials and products chemical analysis methods Determination of lead in copper-based materials and products (electrolytic separation-EOTA titration method) JB/T 8063.7-1996 Powder metallurgy materials and products chemical analysis methods: Determination of zinc in copper-based materials and products (lead sulfide barium sulfate co-precipitation-EDTA titration method) JB/T 8063.8-1996 Powder metallurgy materials and products chemical analysis methods Determination of iron in copper-based materials and products (EDTA-H2O2 spectrophotometric method) (2 is the subscript for H, O) JB/T 2798-1999 Metallographic Standards for Sintered Products Made from Iron-Based Powder Metallurgy