... Q235 hinge: zinc alloy price/set: USD10-15 pcv tilt and turn window hardware:1. handle :material: aluminum alloyfinished: spray coatedcolor ... zinc electroplated, with thickness 15μm,3. top bearing and bottom bearing:zinc alloy stamping, Q235 axis pin, ... lock support: Q235 stamping, trivalent chromium electroplated5. top rod and tilt rod:Q235 steel belt, stamping, elctroplated6. surpport block:Q235 ...