Tasashin ayyuka na tasashin duniya na tsarin gida ya gabata lS0, ANS I , DIN.J I S kuma standaradi daidai, kuma alamannan mai shi ce film clamping chain kuma sharp tooth cO n tsaye chain ;
Jumunin daidaiya ya same kasar kalin tsaye na chain da tare da hanyar kalin aiki, da ya same masu wucewa daga cikin aikacewa ta kalin aiki.Tsabarin kalin na chain don chain yana gaskiya a cikin amfani aikace-aikace ;
Bincika ① :Tashe tashe na tsabarin kalin shi ne a cikin tsabarin kalin daga cikin I SO standard;
Bincike ② :Kunafa dimensun ayyuka na rubutu suna yi ba daidai ne daga 2/3 rubutu daga cikin rubutu ISO sharhiyar ;
Za'a ③ :Rubutun dimensiyar rubutin ayyuka na jerin rubutu suna ne 1/3 don rubutin ayyuka dakikinsa ISO standard;
Rubutun daga cikakken suka yi a cikin makina tsaye da saniya kuma suna daidai masu wannan yau amfani da hanyar samanin daga cikakkene ko rubutun lokaci daidai q ire.