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We are one of the biggest and professional manufacturer of high quality steel grating in China .We are located in Ningbo and near to Shanghai . Ningbo Lihong Steel Grating Co.,Ltd has approved ISO9001-2000 Quality Management System and we work ISO9001-2008 that is the newest edition now. There are many regular grating customers in USA ,AUS,Kuwait, UAE, Malaysia, ,Philippine,Singapore, UK,New zealand,Tunisia ,South Africa and so on. More than 60% of products is exported to the worldwide.
Our company is specialized in manufacturing and exports all kinds of steel gratings with the best quality and competitive price and faster delivery time such as steel / mill black and hot dip Galvanizing / and stainless grating flooring walkway, platform ,steel structures, stair tread, well cover, trench cover, sump cover,compound gratings, storage shelves, ladder, fences and handrail so on for construction project, oil project, seaport, power plant, water plant, defense project, chemical factory and so on.
We produce three kinds of steel gratings, they are Plain Style Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating. They are widely used in steel structure platforms, stair treads, sidewalks, drainages and well covers etc. We can design and manufacture standard steel grating and in customized shapes per client's requirements.
1) Bearing Bar (Load Bar) Specifications (mm): The specification of plain type and serrated type bearing bar is 20 x 3 to 100 x 10;the specification of I-section type is 25 x 5 x 3, 32 x 5 x 3, 38 x 5 x 3, 40 x 5 x 3, 50 x 5 x 3, 50 x 7 x 4, 55 x 7 x 4, 60 x 7 x 4, 65 x 7 x 4, 70 x 7 x 4, 75 x 7 x 4, etc.
2) Bearing Bar Pitch (center to center): 12.5, 15,25, 30, 30.16, 32.5, 34, 40, 41.25, 45, 50, 60, 60.32, 80, 100 mm etc, also be according to client's requirement and 30, 40, 50,60mm are recommended,
America standard is also available <1' x 3/16', 1 1/4' x 3/16', 1-1/2' x 3/16', 1' x 1/4', 1-1/4' x 1/4', 1 1/2' x 1/4'(19-w-4), (11-w-4), (8-w-4) and so on.>
3) Cross Bar Pitch (center to center): 30,38, 40,50, 50.16,76, 100, 101.6mm etc, also be according to client's requirement and 50, 100mm are recommended, America standard is available.
4) Material: Mild Steel (Low Carbon Steel) or Stainless Steel
5) Surface Treatment: Untreated, Painting ,Powder coated or Hot dip Galvanizing
6) Steel grating standards: A) China: YB/T4001-1998 B) USA: ANSI/NAAMM (MBG531-88) C) UK: BS4592-1987 D) Australia: AS1657-1988 E) Japan: JJS.
steel grating