The specifications of angle steel are expressed in terms of the dimensions of side length and side thickness. Currently domestic angle steel specifications for 2-20, to the centimeter of the side length for the number, the same number of angle steel often have 2-7 different side thickness. Imported angle steel marked on both sides of the actual size and side thickness and indicate the relevant standards.
Generally the side length of 5cm or less for small angle, 12.5cm-5cm between the medium-sized angle, side length of 12.5cm or more for large angle.
According to the shape of equal angle and unequal angle. Angle steel is commonly known as angle iron, is the two sides perpendicular to each other into the angle of the long steel. There are equal and unequal angle steel and angle steel. Hot rolled unequal angle is the cross-section such as the letter L, two perpendicular to each other into an angle and the width is not equal to the hot rolled long steel.
The specification of hot rolled equal angle is 2#-20#. Angle steel can be structured according to the different needs of a variety of different stress members, can also be used as a connection between the members. Widely used in a variety of building structures and engineering structures, such as beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks and warehouses.
Expanded Information:
Angle steel is a carbon structural steel for construction, which is a section steel with simple section, mainly used for metal components and frames of plants and so on. In use requires good weldability, plastic deformation properties and a certain degree of mechanical strength. Angle steel chemical composition of the general structure of rolled steel series, the main test indicators for C, Mn, P, S four.
Angle steel is commonly known as angle iron, is the two sides perpendicular to each other into the angle of the long steel. Is the same kind of steel, just called inconsistent. It is specifically used to do shelves of steel, there are various shapes, there are many long holes to facilitate people string screws, mainly for shopping malls, factories and individuals to do shelves with.
Production process: hot-dip galvanized steel angle into the hot-dip galvanizing operation before the assembly line, first of all, after the selection of flat and no defects of the angle into the pickling workshop, with acid or acid soak hot-dip galvanized steel angle surface of the iron oxide skin and floating rust.
After 2 times of pickling, until the surface of the angle rust and oxidized skin thoroughly pickled off, immediately immersed in water tank soaking waiting for galvanized, so as to prevent the hot dip galvanized steel angle oxidation again.
After the second water cleaning, and then transported on the drying bed drying, and then hot dip galvanized angle immersed in about 460 ℃ zinc pool for hot dip galvanizing operations, and finally according to the customer's different requirements of the hot dip galvanized angle drying and cooling oil or passivation treatment. This method of production of finished galvanized products, corrosion resistance has been significantly improved.
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