Dhumucda midabka zinc passivation film waa 8-15μm, tijaabada buufinta milixdu waa in ka badan 72 saacadood, muuqaalkuna waa midab qaanso roobaad. Marka trivalent chromium passivation la isticmaalo, waxqabadka ilaalinta deegaanku waa mid aad u wanaagsan.

Madaxu waa naqshad isugeyn ah oo isdhaafsan, kaas oo lagu qarin karo dusha rakibidda si dusha sare loogu sii hayo. Dhexroorka daloosha waxa uu u dhigma dhexroorka dunta (sida ST4.2 dhexroorka bit 4.2mm), kaas oo waafaqsan heerka GB/T 15856.1-2002.

Iyada oo loo marayo daaweynta dareeraha passivation madow ee ka kooban milix qalin (c2D), daahan 10-15μm ah ayaa la sameeyay, iyo tijaabada buufinta milixdu waxay ka badan tahay 96 saacadood. Madaw ee zinc plating bey'ada u fican waxay isticmaashaa chromium passivation trivalent, kuma jiraan chromium hexavalent, waxayna u hogaansantaa heerarka RoHS.

Passivation chromate Rainbow (c2C) oo ku saleysan koronto-galvanizing, dhumucdiisuna waxay tahay 8-15μm, tijaabada buufinta milixda in ka badan 72 saacadood. Marka la isticmaalayo habka bakhtiinta chromium trivalent, waxay u hoggaansantaa dardaaranka ilaalinta deegaanka ee RoHS, iyo waxa ku jira chromium hexavalent waa ≤1000ppm.

Laga sameeyay 1022A bir kaarboon ah, engegnaanta dusha sare waxay gaartaa HV560-750 daawaynta kulaylka ka dib, iyo adkaanta xudunta u ah waxay gaartaa HV240-450. Dusha sare waa electro-galvanized si loo sameeyo daahan 5-12μm ah, kaas oo la kulma heerka GB/T 13912-2002, iyo tijaabada buufinta milixdu waxay gaartaa 24-48 saacadood iyada oo aan lahayn miridh cad.