，如下 GB/T 713-1997 specifies the dimensions, shapes and tolerances of boiler plates.
Boiler plates are formed in a range of sizes and shapes, thicknesses, and qualities, with different mechanical properties.
Boiler plates are made of steel that is generally higher in strength and carbon content than the general purpose structural steel used in applications other than boilers. The steel is often further modified with alloy elements such as chromium, nickel, and molybdenum, combined with heat-treating and forming processes to enhance mechanical strength and physical properties.
The GB/T 713-1997 specifies a range of boiler plate sizes that vary by thickness. Each size has two possible thicknesses: one for a minimum thickness and one for a maximum thickness. The thickness can range from 4 to 70mm with tolerances of +-3 mm for each plate size. The thickness of individual plate sizes must be appropriate for their intended application, depending upon the loadings and stresses that will be applied to the plate during its operation.
The GB/T 713-1997 also specifies the shape and size of boiler plates. The size of the plate refers to its length, width, and thickness. All edges of the plate must be clean and smooth. The shape may be either rectangular or square. The minimum width of the plates is 1,200mm and the maximum width is 4,800 mm, with a length ranging from 700mm to 15,000mm.
The GB/T 713-1997 also includes information on dimensional and geometrical tolerances. This includes information on short and side lengths, width, and tolerances, as well as minimum and maximum squareness of cut-edges. The information on dimensions and tolerances provided in the GB/T 713-1997 must be taken into consideration when selecting and processing boiler plates.
The GB/T 713-1997 also sets out requirements for surface finish, as well as coating requirements for different plate sizes and thicknesses. Coating types must be chosen according to the intended service application of the boiler plate.
The GB/T 713-1997 provides information and guidance on material selection, processing, dimensional and geometrical tolerances, surface finish, and coating. It also specifies important performance requirements such as mechanical and physical properties, temperature limitations, test requirements, and delivery terms. Overall, this document provides useful information and guidance for manufacturers, suppliers, and buyers of boiler plates.
