... products name:Stainless steel hinge2, Material:Stainless steel, copper, aluminum, iron3, Surface treatment:Electroplating: gold-plated, copper-plated, and ... various kinds of materials row hinge, piano hinge, heavy row hinge and bolt, small hinge, AA column, aluminum ladder column, ... prices! Details can inquire or conversation online. Largely supply of various types of heavy hinges & other long hinges