... 3.finish:black painted,mill,galvanized hot dipped galvanized steel grating 1.Material: SS302,SS304,SS316,SS310,SS314,SS201,SS430 ... ,SS321 2.Type: W--welded steel grating L-- pressure-locked C-- socket-welding 3.Bearing bar ... centers: 15-30, 40, 60, 80, 90 mm etc. with 30, 40 mm recommended. 4.Cross ... to contact with me hot dipped galvanized steel grating