galvanized steel grating

1.)Ordinary type steel grating inculding 3 kinds. a.One type :bearing bar centers is *0mm ,this type is the most commonly used. b. Second type:bearing bar centers is *0mm, this type is the most economically deft type,mostly used for platform,walking platform and steel ladder. c. Third type:bearing bar centers is *0mm, This type is usually used for mining industry. 2.)Material:  Carbon steel, Stainless steel ,brass and so on . 3.)Surface treatment:hot-dipped-galvanized ,electro galvanized or PVC coated .... 4.)Size:standard or OEM(Making as the customers' request). 5.)Packing:Naked or packing as the customers' request.