C型槽口五金设计原理与优点
Design principle and advantages of c-notch hardware
C型槽口五金安装是依靠不锈钢钉顶紧力和不锈钢衬片与五金槽口夹紧力来保障五金件的安装牢固度，不锈钢钉顶紧会在型材表面产生约0.5～1.0毫米的局部变形使不锈钢钉与铝型材紧密的结合在一起保障五金件在受力时不发生位移。
The installation of c-notch hardware relies on the top tightening force of stainless steel nail and the clamping force between stainless steel lining and metal notch to ensure the installation firmness of hardware. The top tightening of stainless steel nail will produce a local deformation of about 0.5-1.0 mm on the profile surface, which makes the stainless steel nail closely combined with the aluminum profile to ensure that the hardware will not be displaced under stress.
C型槽口五金是专用的铝合金（金属）门窗五金，而U型槽口五金源于塑料门窗，从材质的要求到五金杆件的硬度要求都要低于C型槽口五金。
C-notch hardware is a special aluminum alloy (metal) door and window hardware, while u-notch hardware is derived from plastic doors and windows, and the material requirements and hardness requirements of hardware rods are lower than c-notch hardware.
C型槽口五金的五金材质主要为挤出铝、锌基压铸合金、炭氮共渗钢、不锈钢等，表面经过防腐处理，不会发生结碱现象。
The hardware materials of c-notch hardware are mainly extruded aluminum, zinc based die-casting alloy, carbonitriding steel, stainless steel, etc. the surface of the c-notch hardware will not be alkali formed after anti-corrosion treatment.