Treads recommended length: Recommended Stair Tread width (based on the 5mm thick steel) T1 to T4 30mm pitch 125 155,185,215,245,275 305 T1 to T2 40mm pitch 125,165,205,245,285 325 T3 to T4 40mm pitch 115,155,195,235,275 315 T1 to T2 60mm pitch 185,245,305. T1 to T2 60mm pitch 155,215,275. Hot-dip galvanized steel grating commonly used carbon steel, trench cover, looks hot dip galvanized or painted, Foshan pressure welding steel drain cover, can play a role in preventing oxidation, Foshan galvanized trench cover, also It can be made of stainless steel. Because painting corrosion resistance of steel grating far less hot-dip galvanized steel grating, stainless steel grating and the cost is too high and other reasons, usually they use a hot-dip galvanized steel grating trench cover plant Foshan _ 炳辉 Network Co. ( online consultation) _ trench cover provided by the Nanhai District of Foshan City 炳辉 industry Manufacturing Co. Nanhai District of Foshan City 炳辉 industry Manufacturing Co., Ltd. (fsbhwy.cn) (www.fsbhzw.com) Guangdong Foshan, a leader in the wire mesh over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Bing Hui network industry leadership with the staff warmly welcome all inquiries negotiations to create Bing Hui network industry a better future.