Professional 20-22° casing head ring-shank collated nails with factory-applied painted finish for finish carpentry, casing, and architectural trim applications. As a 33-year nail manufacturer, JLHY has developed precise electro-coating and painting lines that apply uniform color coatings matching popular wood tone standards. The casing head's larger bearing surface distributes load more effectively than standard heads, preventing surface denting in premium millwork. Combined with the ring-shank's superior pull-out resistance, these nails hold trim work permanently without loosening over time. JIS-standard 20-22° collation is widely compatible with leading pneumatic nailer brands in Asian and international markets. JLHY supports B2B buyers with custom color matching (RAL or wood sample), neutral bulk packaging, and container-load shipments from our Tianjin factory. Our sales team serves hardware importers, lumber yards, and millwork distributors with consistent quality backed by 33 years of manufacturing excellence.