The concept of strip steel
Strip steel broadly refers to all flat steel products that are delivered in coil form and have a relatively long length. In a narrow sense, it refers to coils with narrow widths, commonly known as narrow strip steel and medium wide strip steel, sometimes especially narrow strip steel.
According to the statistical classification indicators of the National Bureau of Statistics, coils below 600mm (excluding 600mm) are narrow steel strips or narrow strip steel. 600mm and above are wide steel strips.
Strip steel is generally supplied in rolls and has the advantages of high dimensional accuracy, good surface quality, easy processing, and material saving.
Classification of strip steel
(1) According to the processing (rolling) method: divided into hot-rolled strip and cold-rolled strip.
(ii) According to width: divided into narrow strip steel and medium wide strip steel.
(iii) According to the composition of steel: it is divided into two categories: ordinary strip steel and high-quality strip steel.
Ordinary strip steel generally refers to ordinary carbon structural steel. Commonly used grades are: Q195, Q215, Q235, Q255, Q275. Sometimes low-alloy high-strength structural steel is also included in the general strip. The main grades are Q295, Q345, Q390, Q420, Q460, etc.
There are many varieties of high-quality strip steel, including alloy and non-alloy steel.
The main brands are:
08F, 10F, 15F, 08Al, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 15Mn, 20Mn, 25Mn, 30Mn, 35Mn, 40Mn, 45Mn, 50Mn, 60Mn, 65Mn, 70Mn, 40B, 50B, 30Mn2, 30CrMo, 35CrMo, 50CrVA, 60Si2Mn(A), T8A, T10A, etc.
The purpose of strip steel
Strip steel is mainly used in the automotive industry, machinery manufacturing industry, construction engineering, steel structure, daily hardware and other fields, such as producing welded steel pipes, making cold-formed steel blanks, manufacturing bicycle frames, rims, clamps, washers, springs Blades, saw blades and blades, etc.
For example:
Q195~Q345 and other grades of strip steel can be used to make welded pipes.
10#~40# strip steel can be used as precision tube.
45#~60# strip steel can be used as blades, stationery, tape measures, etc.
40Mn, 45Mn, 50Mn, 42B, etc. can be used as chains, chain pieces, stationery, knives and saws, etc.
65Mn and 60Si2Mn(A) are used to make springs, saw blades, clutch blades, tweezers, springs, etc.
T8A and T10A are used for saw blades, scalpels, razor blades, other knives, etc.
In addition, there are bicycle frames, rims, door and window hinges, handles, containers (SPA-H), etc.
Packaging and fixing methods of strip steel
Generally speaking, strip steel cannot directly contact the ground or the bottom of the container, and needs to be reinforced with wooden supports placed at the bottom.
