... for indoor and outdoor use 2.corrrosion proof 3.powder coating 4.OEM service better price Stainless steel stair ... Material: 304 or 3163. Finish: Satin or Mirror or powder coating or by request4. Suitable for glass thickness: 8- ... ,Mig Welding,Riveting, Grinding,Stamping, Assembling,etc. Surface treatment: Powder coating,Hot galvanized,Painting,Polishing,Brushing,Cataphoresis,Chrome/Zinc/Nickel plating ...