Cold rolled steel from China, CNBM, fast delivery

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China main port
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TT OR LC
Min Order Qty:
1 m.t.
Supply Capability:
100000 m.t./month

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Product Description:

Specification

Product Name

Cold   Rolled Sheet Coil

Material

SPCC/SPCD/SPCE/DC01/ST12/   ST14/SPCD/DC03/DC04 ect.

Grade Standard

JIS   G3302, EN10142, ASTM653, ASTM95

Thickness

0.15-3.5mm

Width

600mm-1500mm

Coil ID

508-610mm

Coil OD

max   1500mm

Weight

3-10   Tons

Tolerance

Thickness   tolerance:+/-0.02mm; Width tolerance:+/-5mm

Surface

No-skin   passed or Skin passed, Tensile leveled

Surface Treatment

Chromate/Unchromate   passivation, fingerprint resistant treatment, oiled/unoiled

Annual Output

350,000MT

Application

Construction,   hardware, home applicances, interior decoration

 

General Application of Cold Rolled Steel Coil:

Classification

Designation

Characteristics

Main   applications

Commercial   quality

SPCC

SPCCT

Commercial   quality suitable for bending fabrication and simple forming; this is the type   in greatest demand.

Refrigerators,   cabinets, power distribution baords and drums.

Drawing   quality

SPCD

Drawing   quality second only to that of SPCEN. Excellent uniformity.

Automobile   floor and roof panels.

Deep-drawing   quality

SPCE

SPCF

Deep-drawing   quality.With metallurgically controlled grain size, it retains its beautiful   finish even after being deep-drawn.

Automobile   fenders and quarter panels

Extra   deep-drawing quality

SPCG

Extra-low-carbon   steel sheets with highest workability

Automobile   internal panels and deep-drawn parts


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Q:What is hot and cold rolled steel plate? How to distinguish? What high hardness? Which will produce noisy eye?
By definition, ingot or billet is difficult to deform under normal temperature, easy processing, generally heated to 1100 to 1250 DEG C for rolling, the rolling process of hot rolled steel rolling. Most are called hot method. But because the surface under high temperature steel is easy to produce iron oxide, the surface roughness of hot rolled steel, size fluctuation so large, smooth surface, precise size, good mechanical properties of the hot rolled steel, semi-finished or finished products and raw materials for the production of cold rolling method. Under normal temperature, generally understood as cold, from the metal science point of view, the boundaries of cold rolling and hot rolling should be differentiated by the recrystallization temperature is lower than rolling recrystallization. The temperature is higher than the recrystallization temperature of cold rolling, rolling for hot rolled steel. The recrystallization temperature is 450 ~ 600 degrees. The difference: the simple point that 1, cold rolled plate surface has a certain gloss hand feels smooth, Similar to that used for drinking water is very common, such as hot rolled.2 steel cup without pickling treatment, is on the market and many are similar to ordinary steel plate surface, rusty surface is red, the surface of the rusty purple black (iron oxide).The performance advantages of cold rolled plate and strip is: 1, high precision, cold rolled strip thickness not more than 0.01~0.03mm.2, thinner, cold rolled steel strip rolling thickness 0.001mm hot rolling; now the thin can reach 0.78mm.3, the surface quality is more superior, cold rolled steel plate can even produce mirror surface; and the surface of hot rolled plate there are defects such as pitting of iron oxide,.4, cold rolled plate can be adjusted according to the running properties such as tensile strength and technological properties such as stamping performance requirements of the user.
Q:What does "rolled steel" mean?.
Rolling is a rolling process, the plate is kind of calendering material, not only some specific material, it can contain stainless steel and carbon steel materials, stainless steel with thickness of steel production for example, now the tolerance basic law, but in order to achieve a certain thickness
Q:How do I print the steel plate?
In fact, the printing mode called "stencil printing", is a kind of porous printing, first use the typewriter in special Lazhi typing, or a stylus paint word pictures, and then let the wax paper attached to ordinary paper, ink in the painted pattern, through hole type or writing, and printing to the following the common paper.
Q:What is muotileaved spring? What is the little leaf spring?
Leaves: by the middle thick and thin steel sheet at both ends of the superposition of equal width. The plate section changes little leaf spring, from the middle to both ends of the cross section is gradually different, therefore the rolling process is more complex, the price is expensive than multi leaf spring. Compared with less leaf spring leaf spring, in the same stiffness (i.e. the same carrying capacity) under the condition of less than the spring leaf light is approximately 50%, reducing fuel consumption, increased ride comfort. And between the little leaf spring monolithic contact, reduces the relative friction and vibration, the ride comfort is increased.
Q:How much is 2 millimeters per square meter?
The performance of carbon steel mainly has the following deficiencies:(1) hardenability is low. Under normal circumstances, the maximum quenching diameter of carbon steel water quenching is only 10mm-20mm.(2) strength and yield strength are relatively low, such as the s of ordinary carbon steel Q235 is 235MPa, while that of low alloy structural steel 16Mn is 360MPa and above s. The sigma S / sigma B of steel 40 is only 0.43, much lower than that of alloy steel.(3) the stability of tempering tempering stability, carbon steel in quenching and tempering treatment, in order to ensure the high strength with the tempering temperature is lower, so the toughness of the steel is lower; in order to ensure good toughness, with high tempering temperature strength is low, the mechanical properties of carbon steel level is not high.(4) stainless steel can not meet the requirements of special performance. Carbon steel is often poor in oxidation resistance, corrosion resistance, heat resistance, low temperature resistance, wear resistance and special electromagnetic properties, and can not meet the needs of special performance.
Q:What's the effect of water stopping between steel plate and water stop strip? What's the difference between the process and the sealing process?
Water stopping principle: the water stop bar is expanded by water absorption and then squeezed with concrete to stop the void.Construction technology: the stop bar is square long strip, and parallel lap method is adopted when connecting. No break point can be left in the middle. Construction units in order to facilitate, often like to use the water bar, concrete pouring in the completion of the pressure on the wall concrete pouring surface, or reserved groove, two times mosaic.Good and bad analysis: simple construction, less investment, relatively economic. But there is no water stopping effect and the water stopping steel plate is good. There are many unforeseen problems during the construction process. One is that the reinforcing bars are not close enough to be laid. Two is the time is too long, moisture absorption expansion, the impact of the effect, especially in the rainy season, air humidity, rainfall, water retention is worse. Three construction joints are not smooth, poor contact. Usually, this method is not ideal for stopping water. For example, when the water stop bar is installed, the retaining of the groove is too large to be fixed effectively; the small inlay is not in place; when the concrete is poured, the utility model is easy to shift under the action of the concrete buoyancy.
Q:Is the pattern steel plate hot-dip galvanized steel?
Hot galvanized steel sheet is hot-dip coated with a metal sheet of zinc about 5-12 microns in size. It is corrosion resistant.The pattern board is a steel plate with a pattern on its surface. The English name is diamond plate. The pattern of a lentil shaped, diamond, round bean shaped, oval shape mixed on the market, the most common form of lentils. Pattern board, according to the material (aluminum alloy, stainless steel, ordinary steel, etc.) different, different shape patterns.
Q:What is a fixed length steel plate?
Such as steel plate, its fixed length is six meters, then it is 6 meters, the size will not be uneven. The standard size of the general steel plate is determined according to the national standard, such as 6 meters, 9 meters, etc..
Q:The difference between color steel and stainless steel
The difference is that an ordinary steel plate is painted with antirust paint and one is made of stainless steelThe same is true of steel, steel and steelIt's essentially different
Q:What can be painted on galvanized steel sheet?
Paint matching1. The paint preparation system used for galvanized steel in soaking or humid environment must be alkali resistant and can not be saponified. Therefore, it is advisable to choose epoxy type coating. Best with epoxy zinc yellow primer.2, for exposure in the dry environment of galvanized steel, zinc yellow epoxy primer can be used with acrylic polyurethane topcoat, or intermediate epoxy zinc chromate primer + epoxy micaceous iron oxide + fluorocarbon topcoat with ultra weatherability, long service life of the supporting scheme.In short, surface treatment is very important, considering the durability of galvanized parts, it is recommended to use the above two kinds of matching paint to ensure the normal service life and reduce the cost of intermediate maintenance.

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