Nyob rau xyoo 1960 thiab 1970s, tsis muaj cov bolts muaj zog, thiab cov tshuab vuam tsis zoo li tam sim no.Yog li ntawd, ntau cov qauv hlau tau txuas nrog rivets, uas qee zaum tuaj yeem pom thaum saib cov yeeb yaj kiab qub.Nws yog yuav luag ib qho antique.
Aluminium los yog steel rub rivets yog siv los xauv cov ntawv hlau thaum siv los ua cov qauv thaiv, thiab tsis tuaj yeem siv rau hauv cov qauv.Raws li seb daim ntawv hlau thaiv yog cov qauv hlau los yog tsis, tsawg kawg cov kws tshaj lij ntawm lub sijhawm ntawd tau them nyiaj me ntsis rau rub rivets.
Post lub sij hawm: Oct-20-2021