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639983 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Brinell hardness test for metallic materials(for ASTM E10) [ASTM标准-金属材料布氏硬度试验（国际比对）] Brinell hardness test for metallic materials(for ASTM E10) [ASTM标准-金属材料布氏硬度试验（国际比对）] 2020-02-26
PT provider ID (284233)

304706 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Brinell hardness test for metallic materials(only for ISO 6506-1) [金属布氏硬度测试（国际比对）] Brinell hardness test for metallic materials(only for ISO 6506-1) [金属布氏硬度测试（国际比对）] 2017-04-21
PT provider ID (284233)

304701 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Brinell hardness test for metallic materials(only for ISO 6506-1) [金属布氏硬度测试（国际比对）] Brinell hardness test for metallic materials(only for ISO 6506-1) [金属布氏硬度测试（国际比对）] 2017-04-21
PT provider ID (284233)

304549 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Brinell hardness test for metallic materials(only for ISO 6506-1) [金属布氏硬度测试（国际比对）] Brinell hardness test for metallic materials(only for ISO 6506-1) [金属布氏硬度测试（国际比对）] 2017-04-21
PT provider ID (284233)

304503 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Charpy impact test for metallic materials (Striker R=2mm. Recommended testing machine: ≥150J) [金属材料夏比冲击试验( R=2mm) （推荐150J 及以上试验机）（国际比对）] Charpy impact test for metallic materials (Striker R=2mm. Recommended testing machine: ≥150J) [金属材料夏比冲击试验( R=2mm) （推荐150J 及以上试验机）（国际比对）] 2017-04-21
PT provider ID (284233)

304498 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Charpy impact test for metallic materials (Striker R=2mm. Recommended testing machine: ≥300J) [金属材料夏比冲击试验( R=2mm) （推荐300J 及以上试验机）（国际比对）] Charpy impact test for metallic materials (Striker R=2mm. Recommended testing machine: ≥300J) [金属材料夏比冲击试验( R=2mm) （推荐300J 及以上试验机）（国际比对）] 2017-04-21
PT provider ID (284233)

639978 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Charpy impact test for metallic materials (Striker R=8mm. Recommended testing machine: ≥150J. for ASTM E23) [ASTM标准-金属材料室温冲击试验( 8mm摆锤刀刃，推荐≥150J试验机）（国际比对）] Charpy impact test for metallic materials (Striker R=8mm. Recommended testing machine: ≥150J. for ASTM E23) [ASTM标准-金属材料室温冲击试验( 8mm摆锤刀刃，推荐≥150J试验机）（国际比对）] 2020-02-26
PT provider ID (284233)

304508 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Charpy impact test for metallic materials (Striker R=8mm. Recommended testing machine: ≥300J) [金属材料夏比冲击试验( R=8mm) （推荐300J 及以上试验机）（国际比对）] Charpy impact test for metallic materials (Striker R=8mm. Recommended testing machine: ≥300J) [金属材料夏比冲击试验( R=8mm) （推荐300J 及以上试验机）（国际比对）] 2017-04-21
PT provider ID (284233)

304534 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Chemical analysis of Hot Rolled Ribbed Steel Bar (GSO-NIL PT-2017-002) [热轧带肋钢筋化学成分分析] Chemical analysis of Hot Rolled Ribbed Steel Bar (GSO-NIL PT-2017-002) [热轧带肋钢筋化学成分分析] 2017-04-21
PT provider ID (284233)

304098 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Determination of Al2O3, SiO2, Fe2O3, CaO and TiO2 in bauxite [铝土矿中化学成分分析（国际比对）] Determination of Al2O3, SiO2, Fe2O3, CaO and TiO2 in bauxite [铝土矿中化学成分分析（国际比对）] 2017-04-21
PT provider ID (284233)

304407 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Determination of average grain size in aluminium alloy(only for Intercept Procedure) [铝合金的平均晶粒度的测定（国际比对）] Determination of average grain size in aluminium alloy(only for Intercept Procedure) [铝合金的平均晶粒度的测定（国际比对）] 2017-04-20
PT provider ID (284233)

639998 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Determination of average grain size in metallic materials (Recommendation for Intercept Procedure. for ASTM E112) [ASTM标准-金属平均晶粒度的测定（国际比对）] Determination of average grain size in metallic materials (Recommendation for Intercept Procedure. for ASTM E112) [ASTM标准-金属平均晶粒度的测定（国际比对）] 2020-02-26
PT provider ID (284233)

304395 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Determination of average grain size in metallic materials(only for Intercept Procedure) [金属平均晶粒度的测定（国际比对）] Determination of average grain size in metallic materials(only for Intercept Procedure) [金属平均晶粒度的测定（国际比对）] 2017-04-20
PT provider ID (284233)

639916 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Determination of burning behaviour of plastics by oxygen index（ISO 4589-2） [塑料燃烧性能的测定（氧指数法）] Determination of burning behaviour of plastics by oxygen index（ISO 4589-2） [塑料燃烧性能的测定（氧指数法）] 2020-02-26
PT provider ID (284233)

303607 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Determination of C, Si, P, Mn, S and Cr in bearing steel [轴承钢中化学成分分析（国际比对）] Determination of C, Si, P, Mn, S and Cr in bearing steel [轴承钢中化学成分分析（国际比对）] 2017-04-21
PT provider ID (284233)

303750 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Determination of C, Si, Mn and P in ferromanganese alloy [锰铁中化学成分分析（国际比对）] Determination of C, Si, Mn and P in ferromanganese alloy [锰铁中化学成分分析（国际比对）] 2017-04-20
PT provider ID (284233)

639850 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Determination of C, Si, Mn, P and Cr in low-carbon ferrochromium [低碳铬铁中化学成分分析（国际比对）] Determination of C, Si, Mn, P and Cr in low-carbon ferrochromium [低碳铬铁中化学成分分析（国际比对）] 2020-02-26
PT provider ID (284233)

287582 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Determination of C, Si, Mn, P and S in low alloy steel [低合金钢中化学成分析（国际比对） ] Determination of C, Si, Mn, P and S in low alloy steel [低合金钢中化学成分析（国际比对） ] 2017-04-17
PT provider ID (284233)

287592 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Determination of C, Si, Mn, P and S in low alloy steel by spark atomic emission spectrometry [用火花源原子发射光谱法测定低合金钢中化学成分（国际比对）] Determination of C, Si, Mn, P and S in low alloy steel by spark atomic emission spectrometry [用火花源原子发射光谱法测定低合金钢中化学成分（国际比对）] 2017-04-17
PT provider ID (284233)

303589 China China NIL Research Center for Proficiency Testing China NIL Research Center for Proficiency Testing Determination of C, Si, Mn, P, S, Cr and Ni in stainless steel by spark atomic emission spectrometry [用火花源原子发射光谱法测定不锈钢中化学成分（国际比对）] Determination of C, Si, Mn, P, S, Cr and Ni in stainless steel by spark atomic emission spectrometry [用火花源原子发射光谱法测定不锈钢中化学成分（国际比对）] 2017-06-29
PT provider ID (284233)

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