Stair treads design requirements are: design treads under load conditions, arbitrary stepping midpoint deflection of not greater than 1/200 of the span, the maximum can not exceed 6mm, in addition to meeting the above requirements, all the treads shall comply the following provisions: a, design load value X1.5, the steel grating without permanent deformation b, the design load value X3.0, steel grating not crack a, according to the nominal width of the table preferred the original plate width, When less than the width of the original board, the choice of the number of flats corresponding nominal width value b, steel grating load flat opposite ends of the support frame supporting the length of each side of not less than 25mm c, row plate gap: between the steel grating 5- 10mm, steel grating minimum width (walkway) on a 300mm steel grating steel grating surfaces and adjacent structures 10mm d, platform handles a hot-dip galvanizing: hot-dip galvanizing process in general after edging completion when the load flat steel thickness of not less than 5mm, the average weight of galvanized zinc coating not less than 610 g / square meter; when the load is less than the thickness of flat steel 5mm, the average weight of galvanized zinc coating not less than 460 g / square meter, After galvanizing quality and shall comply with the requirements of GB / T13912 requirements. 2, paint: according to the special requirements of users spraying, brushing or dipping, more than by quality, reasonable price and high quality service to win customers praise! And eager to support each other with the user units, mutual benefit and long-term friendly cooperation! We have a number of heat transfer equipment manufacturing experienced team Yancheng treads manufacturers, according to the actual situation tailor-made for each customer the most scientific perfect, the most economical steel grating engineering solutions. At the same time our products with excellent quality, innovative design, reasonable price and good after-sales service, wholeheartedly provide customers with professional, quality service. "Moisten things silently, drip feed the family," Your satisfaction is our greatest power forward! Nimda treads product excellence, and constantly develop and progress. We are willing to work together with friends and grow together! Factory direct win-win cooperation, the gentleman love of money to road, a cooperative permanent friends, the factory will cherish every opportunity to cooperate in Nanjing stepping board manufacturers, ?? do not understand value, guarding Jinshan will not be happy. I hope we gain wealth and happiness together. Also known as tooth galvanized hot dip galvanized skid treads treads, flat steel and bars by side with a zigzag arrangement of steel welded together by numerous small lattice spacing composed according to certain latitude Grating products, and its surface hot galvanized. Especially suitable for wet, creamy offshore oil platforms. Yancheng treads manufacturers, Lianyungang treads manufacturers (certified), treads made by Anping million steel grid MILL. Anping send one hundred million steel grid MILL (www.hbggb.net) (www.hbggb.net) Hebei Hengshui, the wire mesh of the leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum limits to meet customer needs. Steel grating sent one hundred million in leadership with the staff warmly welcome all inquiries negotiations to create hair one hundred million steel grating a better future.