Nqa cov plag tsev feem ntau yuav tsum tau ntim kho. Muaj ntau hom kev kho plawv ntom ntom. Feem ntau, kev siv hluav taws xob, cov pa taws, oxidation, phosphating, thiab non-electrolytic zinc coating feem ntau yog siv. Txawm li cas los xij, electroplated fasteners account rau feem ntau ntawm kev siv cov fasteners. Tshwj xeeb tshaj yog nyob rau hauv tsheb, tsheb laij teb, khoom siv hauv tsev, khoom siv, aerospace, kev sib txuas lus thiab lwm yam lag luam thiab kev lag luam yog siv ntau dua. Txawm li cas los xij, rau cov hlua khoob khawm, nws tsis yog yuav tsum tau muaj qee qhov kev txhawj xeeb hauv kev siv, tab sis kuj yuav tsum xyuas kom sib hloov ntawm cov xov, uas tej zaum yuav raug xa mus rau hauv no raws li cov cuab yeej cuab tam. Yuav kom ib ntus tau raws li "preservative" thiab "interchangeable" dual-siv khoom siv rau kev siv threaded fasteners, nws yog ib qhov tsim nyog los tsim cov qauv tshwj xeeb plating.
GB / T5267.1-2002 [Standed fastener plating] tus qauv yog ib qho ntawm cov kev cai "kev sib tw ntiav kev kho" ntawm cov qauv, xws li: GB / T5267.1-2002 [khawm plating]; GB / T5267.2-2002 [finger non-electrolytic zinc sheet txheej] ob qhov qauv. Cov txheej txheem no sib npaug rau tus txheej txheem thoob ntiaj teb ISO4042; Xyoo 1999 [Lub voj tshuab plating]. Cov qauv no hloov cov GB / T5267-1985 [Qib nta plated] plating.