■Please read the manual carefully when ordering grating products.。
●Please specify the model, dimension, quantity and surface states of gratings.
■Please specify the model and quantity of fixing clips. Four fixing clips are needed by every piece of grating in principle.
●Please provide the plan of building structure and other relevant drawings when the gratings with a large area are laid. In case of tapping, the elevation drawing, node diagram and sectional dimension and position of support girder should be provided.
■When ordering tread, please specify the model, length, width, quantity, specification and surface state of gratings.
●If something is unknown, please contact the sales department and we will give you a satisfactory reply.

Calculate Area
1.If the drawing is unavailable and the product is made according to the dimension provided users, the area is the sum by multiplying the quantity by the length and width of gratings, and includes the hole and cut.
2.If the drawing is available and our company provides layout design, the area is calculated based on the overall dimension of the drawing, and includes the hole and cut.
3.The area of deformed steel grating is calculated by multiplying the length by the width, and includes the cut. The typical examples are shown in figures.