Stainless steel angle steel is a long strip of steel with two sides perpendicular to each other. There are equilateral stainless steel angle steel and unequal stainless steel angle steel. The two sides of the equilateral stainless steel angle are equal in width. Its specifications are expressed in millimeters of side width × side width × side thickness.
Stainless steel angle steel can be composed of various stress-bearing components according to the different needs of the structure, and can also be used as connecting parts between components. It is widely used in various building structures and engineering structures, such as beams, bridges[/url], transmission towers, lifting and transporting machinery, ships, industrial furnaces, reaction towers, container racks and warehouse shelves.
Stainless steel angle steel is a carbon structural steel for construction. In use, it is required to have good weldability, plastic deformation performance and certain mechanical strength. The raw material billet for the production of stainless steel angle steel is low carbon square billet, and the finished stainless steel angle steel is delivered in hot-rolled, normalized or hot-rolled state.
Types and Specifications
It is mainly divided into two types: equilateral stainless steel angle steel and unequal edge stainless steel angle steel.
The specifications of stainless steel angle steel are expressed by the dimensions of side length and side thickness. Since 2010, the domestic stainless steel angle steel specifications are 2-20, and the number of centimeters on the side is the number. The same size stainless steel angle often has 2-7 different side thicknesses. Imported stainless steel angle steel indicates the actual size and side thickness of both sides and the relevant standards. Generally, large-scale stainless steel angle steel with a side length of more than 12.5cm, medium-sized stainless steel angle steel with a side length of 12.5cm-5cm, and small stainless steel angle steel with a side length of less than 5cm.
The order of import and export stainless steel angle steel is generally based on the specifications required in use, and its steel grade is the corresponding carbon steel steel grade. That is, stainless steel angle steel has no specific composition and performance series except for the specification number.
The delivery length of stainless steel angle steel is divided into fixed length and double length. The selection range of fixed length of domestic stainless steel angle steel is 3-9m, 4-12m, 4-19m and 6-19m according to the different specifications. The length selection range of stainless steel angle steel made in Japan is 6-15m.
The section height of the unequal-sided stainless steel angle steel is calculated according to the long side width of the unequal-sided stainless steel angle steel.
Import and export situation
There are certain batches of stainless steel angle steel imported and exported in my country, mainly imported from Japan and Western Europe. The main export destinations are Hong Kong and Macau, Southeast Asia, Latin America and Arab countries. The export production enterprises are mainly steel mills (rolling mills) in Jiangsu, Liaoning, Hebei, Beijing, Shanghai, Tianjin and other provinces and cities.
The imported stainless steel angles are mostly large and small stainless steel angles and special-shaped stainless steel angles, and the export varieties are mostly medium-sized stainless steel angles such as No. 6 and No. 7.
Appearance quality requirements
The surface quality of stainless steel angle steel is specified in the standard, and it is generally required that there should be no harmful defects in use, such as delamination, scarring, cracks, etc.
The allowable range of geometric deviation of stainless steel angle steel is also specified in the standard, which generally includes items such as curvature, side width, side thickness, top angle, theoretical weight, etc., and it is stipulated that stainless steel angle steel must not have significant twist.