Prime Quality Cold Rolled Steel Sheet Coil

Prime Quality Cold Rolled Steel Sheet Coil System 1

Prime Quality Cold Rolled Steel Sheet Coil

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 100 m.t.

Supply Capability:: 10000 m.t./month

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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

Specification

1. Thickness: 0.4-2.0mm

2. Width: 900-1250mm

3. Inner Diameter: 508 & 610mm

4. Weight of Steel Coil: 3-15MT

5. Heat Treatment: Annealed + Smoothed

6. Margin Status: EC & EM

7. Surface Quality: FC & FD

8. Surface Treatment: Oiling

9. Surface Status: Bright

Chemical Components

Grade	Chemical Components
Grade	C	Mn	P	S	Alt
St12	≤0.10	≤0.50	≤0.035	≤0.025	≥0.020
St13	≤0.08	≤0.45	≤0.030	≤0.025	≥0.020
St14	≤0.08	≤0.40	≤0.025	≤0.020	≥0.020

Mechanical Properties

1. Yield Strength: ≤320MPa

2. Tensile Strength: ≤370MPa

3. Elongation (L=50mm, b=25mm) When:

(1) Nominal Thickness <0.25mm: 30%

(2) Nominal Thickness 0.25mm-<0.40: 32%

(3) Nominal Thickness 0.40-<0.60mm: 34%

(4) Nominal Thickness 0.60-<1.0mm: 36%

(5) Nominal Thickness 1.0-<1.6mm: 37%

(6) Nominal Thickness >1.6mm: 38%

Q:How are steel coils welded together?: Steel coils can be welded together using various methods, depending on the specific requirements and the type of steel being used. One common method is the use of electric resistance welding (ERW), where an electric current is passed through the steel coils to generate heat. This heat melts the edges of the coils, and pressure is applied to join them together. ERW is a quick and cost-effective method for welding steel coils. Another method is high-frequency induction welding (HFIW), which is commonly used for thinner steel coils. In this process, an induction coil is used to generate an alternating magnetic field, which induces an electric current in the steel coils. The resistance of the coils to this electric current generates heat, causing the edges to melt and form a weld. For thicker and heavier steel coils, submerged arc welding (SAW) is often employed. This method involves the use of a granular flux and a continuous electrode, which is fed into the weld area. The flux melts, creating a protective shield for the weld pool, and the electrode melts to form the weld. SAW is a robust and efficient method for welding steel coils. Additionally, laser welding and gas metal arc welding (GMAW) can also be used to weld steel coils. Laser welding offers high precision and speed, while GMAW, also known as MIG welding, uses an electric arc between a consumable wire electrode and the steel coils to create a weld. Regardless of the welding method used, the key factors for successful welding of steel coils are proper preparation of the edges, maintaining the appropriate heat and pressure levels, and ensuring the correct welding technique is employed.

Q:How are steel coils annealed to improve their properties?: Steel coils are annealed to improve their properties through a process called annealing, which involves heating the coils to a specific temperature and then slowly cooling them. This process helps to relieve internal stresses, enhance ductility and toughness, and refine the grain structure of the steel, resulting in improved mechanical properties such as increased strength and reduced brittleness.

Q:What is the typical lead time for ordering steel coils?: The typical lead time for ordering steel coils can vary depending on factors such as the supplier, quantity required, and current market conditions. However, it is common to expect lead times ranging from a few weeks to a couple of months.

Q:How are steel coils used in the production of building systems?: Steel coils are used in the production of building systems as they serve as the primary raw material for manufacturing various structural components such as beams, columns, and trusses. These coils are processed through different techniques like cutting, bending, and welding to create the desired shape and size of the building elements. The strength and durability of steel make it an ideal material for constructing robust and long-lasting building systems.

Q:What are the different surface finishes of steel coils?: There are several different surface finishes of steel coils, including mill finish, galvanized finish, painted finish, and coated finish.

Q:How are steel coils inspected for surface finish variations?: Steel coils are inspected for surface finish variations using visual examination, mechanical methods such as gauges and calipers, and non-destructive testing techniques like magnetic particle inspection or ultrasonic testing.

Q:I just want regular steel, not stainless steel.: Iron is the primary ingredient in steel. All Steel is an alloy by definition. Stainless steels are alloys that resist corrosion. There are dozens of alloys of steel. Many stainless steels are not magnetic. If a magnet won't stick to it it is very likely to be a stainless steel but that is not true for all stainless steels. You really do need to be more specific as to what you want and why. There are too many to chose from.

Q:i have a question on a test and the questions before it are about blast furnace, wrought iron and cast iron...question 16 is..What is Steel?i dont really get what im being asked.. there could be many answers, what answer are they looking for?: steel is a mixture of two or more metal or a metal with non metal to obtain both properties of the indivudual components. carbon steel for example.

Q:How are steel coils used in construction?: Steel coils are commonly used in construction for a variety of purposes, such as creating structural frameworks, reinforcing concrete, and manufacturing various building components like beams, columns, and trusses. The coils are unrolled and cut to specific dimensions, allowing them to be easily shaped and welded into various structural elements. This versatile material provides strength, durability, and flexibility, making it an essential component in constructing buildings, bridges, and other infrastructure projects.

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