Material:Mild steel ,carbon steel. Size:Standard or OEM. 30/100,34/38,38/76,,, ... made by bearing bar and cross bar according to the flat-steel weft arrangement, in high-pressure spacing on resistance welder welded ... , manhole cover, ladders, fences, guardrail etc. 4.)Material: Carbon steel, Stainless steel , and so on . 5.)Surface treatment: Hot-dipped-galvanized ,electro ...