The clamp body, keepers and socket-clevis are malleable iron ,the closed-pin is stainless steel work.The other parts are steel, All ferrows parts are holt-dip galvanized.

• 线夹本体和压板为锻铸铁件，闭口销为不锈钢制件，其余为钢制件，可锻铸铁件和钢制件热镀锌。