... surface: mirror polish. 3.size: 1.5" 4.precision Marine Hardware SS316 Butt Hinge1.Material: stainless steel 316&3042. ... lost wax process, silica sol process casting5.Usage: used as marine parts, Machinery parts,yacht fitting, ship product, hardware, construction ... make mass production become easy. Name of product SS316 Marine Hardware/Rigging hardware butt hingeWebsitehttp://dyxinghui.en.alibaba.com/ ...