What is the difference between plates, steels, and profiles

It seems that this is a newbie, so I suggest you go **.

Classified by use: (1) Bridge steel plate (2) boiler steel plate (3) shipbuilding steel plate (4) armor steel plate (5) automobile steel plate (6) roofing steel plate (7) structural steel plate (8) electrical steel plate (silicon steel sheet.

9) Spring steel plate (10) Others.

Profile: I-beam.

Height 180mm

Height 180mm

Channel height 180mm

Height 180mm

Equilateral angle steel side width 160mm

Side width 50 -140mm

Side width 20 -45mm

Unequal angles.

The side width is 160 100mm

The side width is 140 90-50 32 mm

Side width 45 28 mm

Round bar diameter 90mm

Diameter 38 -80mm

Diameter 10 -36 mm

Square steel side width 90mm

Side width 50 -75 mm

Side widths 10 -25 mm

Flat bar width 120mm

Width 60 -100 mm

Width 12 -55 mm

Rebar diameter 40 mm

Diameter 10 -36 mm

Rivet steel with a diameter of 10 -22 mm

Other special-shaped steel: track shoes, steel sheet piles.

and other special-shaped steel, composite flat steel for small farm tools, etc.

Special-shaped steel, farm tool steel, window frame steel, etc.

Pipes: classified according to cross-sectional shape.

1) Simple cross-section steel pipe - round steel pipe, square steel pipe, oval steel pipe, triangle.

Steel pipes, hexagonal steel pipes, diamond-shaped steel pipes, octagonal steel pipes, semi-circular steel circles, and other 2) complex cross-section steel pipes - unequal hexagonal steel pipes, five-petal plum blossom-shaped steel pipes, double-convex steel pipes, double-concave steel pipes, melon-shaped steel pipes, conical steel pipes, corrugated steel pipes, case steel pipes, and others.

3. Classification according to wall thickness - thin-walled steel pipes, thick-walled steel pipes.

4. Classification by use - steel pipes for pipelines, steel pipes for thermal equipment, steel pipes for machinery industry, steel pipes for petroleum and geological drilling, container steel pipes, steel pipes for chemical industry, steel pipes for special purposes, and others.

You can understand the literal meaning, don't use this kind of problem, little pot friend.

Differences: 1. The specifications of the factory are different:

Original slab: The slab that has been cut according to the specifications from the steel mill is called the factory slab. The medium and heavy plate is also out of the wheel of the Mu Feng factory to the plate.

What is the difference between Q235ABCD: B has one more normal temperature shock test than A. C temperature is 0 degrees Celsius, D temperature is -20 degrees Celsius, Q345B and C, D, E plate difference is the same as Q235, Q235B general loss resistant hot-rolled steel.

Yield is around 235 MPa, Q345a b c d: low alloy (16Mn) yield is around 345 MPa. Such as:

The coil is shipped into a coil because the length is very long, and it is rolled up with C, such as: The flat plate is the plate cut into the specifications of the shearing machine order on the hot rolling production line before leaving the factory, such as:

2. The thickness of the coil is generally less than 6mm; Flat plates can be steel plates of various thicknesses, including thin plates, medium plates, and thick plates.

The plate is the adjusted price, and the coil is the overweight price.

Plates (steel plates).It is flat, rectangular and can be rolled directly or sheared from wide steel strips.

Classification by thickness:

Sheet (less than 4 mm thick), commonly used in automotive housings; Medium and heavy plates (thickness 4 60 mm), mainly used in construction engineering, machinery manufacturing, etc.; Extra-thick plates (60 115 mm) for the manufacture of pressure vessels, bridge structures, car girders, marine hulls, and can be assembled and welded into large components.

Classified by production method: hot-rolled steel plate, cold-rolled steel plate

The carbon content of hot-rolled steel plate is slightly higher than that of cold-rolled steel plate. In the case that the components are not very consistent, the density is the same. Hot-rolled steel plate has low hardness, easy processing and good ductility.

The cold-rolled plate has high hardness and is relatively difficult to process, but it is not easy to deform and has high strength.

Classification by surface characteristics:

Galvanized sheet (hot-dip galvanized sheet, electro-galvanized sheet), tin plate, composite steel sheet, color coated steel sheet.

Classification by use:

Bridge Steel Plate, Boiler Steel Plate, Shipbuilding Steel Plate, Armor Steel Plate, Automobile Steel Plate, Roof Steel Plate, Structural Steel Plate, Electrical Steel Plate (Silicon Steel Sheet), Spring Steel Plate, and others.

Wires

Refers to the hot-rolled round steel with a diameter of 5-22mm, because it is traded in the form of coils in the market, so it is also called wire rod. The commonly used wire products are 5-13mm in diameter. The use of wire rod is also very wide, in addition to directly acting on the construction steel bar, it can also be processed into various types of special steel wire, such as spring steel wire, communication wire, etc., can also be processed into other metal products, such as rivets, iron nails, etc.

In life, the most common wire rod is rebar. It is a ribbed steel bar on the surface, also called a ribbed steel bar, which usually has 2 longitudinal ribs and transverse ribs evenly distributed along the length. It is widely used in the construction of civil engineering such as houses, bridges, roads, etc.

Steel is generally divided into four categories: profiles, plates, pipes and metal products. Steel is a material of a certain shape, size, and properties that ingots, billets, or steel are made by pressure processing. Most steel processing is carried out by pressure processing, which causes plastic deformation of the processed steel (billets, ingots, etc.).

Panels are flat, rectangular panels of building material made of standard size and are used in the construction industry as components for walls, ceilings or floors. It also refers to a metal sheet that has been wrought, rolled or cast.

A profile is an object with a certain geometric shape made of iron or steel and materials with a certain strength and toughness through rolling, extrusion, casting, and other processes. This kind of material has a certain appearance size, a certain shape of the cross-section, and a certain mechanical and physical properties. Profiles can be used alone or further processed into other manufactured products, and are often used in building structures and fabrication and installation.

Building materials can be divided into: rebar, wire rod, coil screw, round steel.

Plates can be divided into: cold and hot-rolled coils, medium and heavy plates, color-coated sheets (galvanized sheets, color-coated sheets, tin-plated plates, aluminum-galvanized steel plates), silicon steel, and strip steel.

Profiles can be divided into: corner groove, H-shaped steel, square steel, flat steel, and ball flat steel.

(1) The difference between A, B, C, and D refers to the difference in the impact temperature in their performance. They are: Q235A, no impact; Q235B, which is a 20-degree normal temperature impact; Q235C grade, which is a 0-degree impact; Q235D grade, is -20 degree impact.

The value of the impact varies depending on the impact temperature. Element content: A, B, C, D sulfur content decreases sequentially; A and B have the same phosphorus content, C has the next highest phosphorus content, and D has the least phosphorus content Q235 Chemical composition of each grade:

Low-alloy plates. Q235 is divided into four grades: A, B, C, D (GB T 700-2006) Q235A grade with C Mn Si S P Q235B with C mn Si S P Q235C with C Mn Si S P Q235D with C Mn Si S p As far as its deoxidation method is concerned, F, B, and Z can be expressed as boiling steel, semi-calm steel, and calm steel, respectively. Boiling steel is a steel with incomplete deoxidation and poor plasticity and toughness. Welded structures made of this material are prone to cracks in joints when subjected to dynamic loads.

It is not suitable to work at low temperatures, and sometimes hardening will occur. In contrast, calming steel is of superior and uniform quality, with good plasticity and toughness.

2）q235

Tensile strength ( b mpa): 375-500 Elongation (δ5 %): 26(a 25(a> 24(a> 23(a> 22(a> 21(a> where a is the thickness or diameter of the steel.

In the plate, it is the most common material, which belongs to the general plate series. One of the old names was: A3.

Executive standard: The external standard is: GB T709-2006 "Size, shape, weight and allowable deviation of hot-rolled steel plate and steel strip", and the internal standard is:

GB T3274-2007

3) Q345 is a material of steel. It is a low-alloy steel (C< which is widely used in construction, bridges, vehicles, ships, pressure vessels, etc. q represents the yield strength of this material, and the following 345 refers to the yield value of this material, which is about 345 megapascals.

And with the increase of the thickness of the material, its yield value decreases;

4) Q420 is a low-alloy high-strength structural steel;

5) Q460T divides special steel into three categories: high-quality carbon steel, alloy steel, and high-alloy steel (alloying elements greater than 10%), of which alloy steel and high-alloy steel account for 98% of the special steel output. The main types of steel are special carbon structural steel, carbon tool steel, carbon spring steel, alloy spring steel, alloy structural steel, ball bearing steel, alloy tool steel, high-alloy tool steel, high-speed tool steel, stainless steel, heat-resistant steel, as well as high-temperature alloys, precision alloys, electric heating alloys, etc.

1. Classification according to thickness: (1) thin plate, thickness not more than 3mm (except electrical steel plate) (2) medium plate, thickness in 4-20mm (3) thick plate, thickness in 20-60mm (4) extra-thick plate, thickness greater than 60mm.

2. Classification according to production methods: (1) hot-rolled steel plate (2) cold-rolled steel plate.

3. Classification according to surface characteristics: (1) galvanized sheet (hot-dip galvanized sheet, electro-galvanized sheet) (2) tin-plated sheet (3) composite steel plate (4) color-coated steel plate.

4. Classification according to use: (1) bridge steel plate (2) boiler steel plate (3) shipbuilding steel plate (4) armor steel plate (5) automobile steel plate (6) roofing steel plate (7) structural steel plate (8) electrical steel plate (silicon steel sheet) (9) spring steel plate (10) heat-resistant steel plate (11) alloy steel plate (12) others.