Strip itself is a relatively broad concept. In a broad sense, strip refers to all long-length flat steels that are delivered in coils.
Strip steel in a narrow sense mainly refers to coils with a narrow width, that is, commonly referred to as narrow strip steel and medium wide steel strip, sometimes especially narrow strip.
Strips with a width of 100~600mm are usually called narrow strips.
600~1000mm strip is called medium wide band.
More than 1000mm is called a coil.
According to the statistical classification indicators of the National Bureau of Statistics, coils below 600mm (excluding 600mm) are narrow strips or narrow strips. 600mm and above are wide steel strips.
(1) According to the processing (rolling) method: it is divided into hot-rolled strip and cold-rolled strip.
(2) According to the width: divided into narrowband and medium wideband.
(3) According to the composition of steel: divided into ordinary belt and excellent belt.
Common belt 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 classified into common belt, the main grades are Q295, Q345, Q390, Q420 , Q460, etc.
There are many varieties of excellent belts, 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 specification of narrow strip steel is generally 1.0~4.0mm*100~500mm*C;
The medium and broadband specifications are generally 1.5~12mm*600~1000mm*C.
The use of strip steel is extremely wide, mainly used in the automotive industry, machinery manufacturing industry, construction engineering, steel structure, daily hardware and other fields, is the raw material of cold-rolled strip steel, cold-formed steel, welded steel pipe and other steel.
Q195~Q345 and other grades of strip steel can be used as welded pipes.
10#~40# strip steel can be used as precision tube.
45#~60# strip steel can be used as blade, stationery, tape measure, etc.
40Mn, 45Mn, 50Mn, 42B, etc. can be used as chains, chain pieces, stationery, knife saws, etc.
65Mn, 60Si2Mn(A) are used as springs, saw blades, clutch blades, tweezers, springs, etc.
T8A, T10A are used as saw blades, scalpels, razor blades, other knives, etc.
In addition, there are bicycle frames, rims, door and window hinges, handles, and containers (SPA-H) and so on.
Pickling→cold rolling→annealing→cold rolling→slitting→forming heat treatment.