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    CNS 257 Standard english version introduction

    CNS General No. CNS 257
    Classified No. B3083
    Boiler Rivet Hole Reamer, with Square Head
    鍋爐鉚釘孔鉸刀(方頭圓柱柄)      
    Date of Approval
    Bureau of Standards, Metrology and Inspection Date of Revision
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    CNS Standard Code CNS 257:2017
    CNS Standard Classified No. B3083
    CNS Standard English Title Boiler Rivet Hole Reamer, with Square Head
    CNS Standard Chinese Title 鍋爐鉚釘孔鉸刀(方頭圓柱柄)      
    CNS Standard Edition Status:Current; Latest date:09/25/1952 Confirmed date:07/27/2017
    CNS Standard Pages 3
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    English Translation Price $*** USD
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