Cold Rolled Steel

CR Factory From China

Basing on the raw materials of high quality hot-rolled coil which has removed iron oxide after picked, cold-rolled sheet is made through reversing cold rolling deformation imposed on the group, annealing, formation, and exactness processes, including plate and volumes. A steel sheet, which is also known as box board or plate, is for delivery in sheets. A long roll known as the steel delivery is also known as coil.

Production Process

The sheets are not heated duing the process, so there are no pitting and skin defects such as iron oxide, but good-quality and smooth surface. And the accuracy of the cold-rolled products' size is high. The performance and organization of the product can meet some special requirements, such as the electromagnetic properties, deep drawing properties.

Rolling process speed: 1000m/min

Forms of energy: electricity, water, steam

Specification:

Thickness: 0.15-1.2mm

Width: 700-1250mm

Diameter: 6010mm

Diameter: 2000mm

Coil weight 20T.

Grade: Q195A-Q235A, Q195AF-Q235AF, Q295A(B)-Q345A(B): SPCC, SPCD, SPCE, ST12-15 DCO1-06

Performance: Mainly used in low carbon steel grades, requires a good cold bending and welding performance, and some stamping performance.

Application: cold-rolled products with excellent mechanical and processing properties and thickness of theprecise characteristics are widely used in construction, automotive, transportation and other industries, and as a hot dip for raw materials.

Cold-Rolled Steel Features:

Thickness: 0.20-3.00mm

Width: 600-1500mm

Length: According to customer’s requirement

Material: Q195, SPCC, DC01, SPCC-SD

Standard: JIS G3141-1996, EN 10131-2006, DIN EN 1002

Coil ID: 508mm, 610mm or per customer's request.

Coil weight: 4-8/MT

Package: Strapped with min three strapping strips, covered by anti-water paper and plastic film, fixed on the iron or wooden pallets by strpping strips & covered by plastic bag to prevent damage.

Shipping Information:

FOB Port: Any port in China

Lead Time: 20 days

HTS Code: 7210.70.10 00

Dimensions per Unit: 1.5 × 1 × 1 Meters

Weight per Unit: 5 Metric Tonnes

Units per Export Carton: 5

Export Carton Dimensions L/W/H: 1.5 × 1 × 1 Meters

Export Carton Weight: 5 Metric Tonnes.

Cold rolled steel details:

Our Factory offers the Cold Rolled sheet in a variety of sizes, grades and surface finishes to meet specific end-use requirements. Cold Rolled Sheet is manufactured from hot rolled coils by pickling to remove the surface oxide produced during the hot rolling stage, and cold reducing through a Cold Mill to the desired thickness.

Cold reducing steel produces an extremely low ductility product. It’s usually processed further to develop desired end use characteristics such as form-ability, surface texture, flatness, etc. These further reprocessing steps include annealing and temper rolling for form-ability and surface texture, and in some cases, tension leveling for flatness.

1. Sophisticated Surface And Dimensional Accuracy

A cold-rolling reduction rate of 40% or higher severely compromises the cohesiveness of a metal structure because it aligns the metal grains in the direction of rolling. However, recrystallization through the annealing processhardens the steel but eliminates the hard, brittle qualities resulting from the cold reduction process. Cold- rolled steel sheet that has undergone the annealing process has increased workability compared to cold-rolled sheet produced by the conventional method. Sheet and coil can be produced at various grades of workability by altering the annealing and cold-rolling conditions

2. Excellent Workability

Using the cold rolling process, cold-rolled steel plate undergoes annealing and temper-rolling to achieve a consistent, smooth surface with uniform thickness and flatness. Additionally, these treatments provide cold-rolled steel sheet and coil with superior mechanical properties. As a result, cold rolled sheet and coil have a high level of work-ability and are suitable for metallic coating, painting and other similar treatments.

3. Various Applications

Cold-rolled steel sheet and coil is essential to automotive and electrical appliance production as well as a wide range of other products requiring tons of highly workable steel of a consistent quality. They also serve as the base metal for tinplates, galvanized sheet and other coated steel products. Since they are used in such varied products, cold-rolled steel sheet must be available with a variety of properties. Increased demand for sophisticated and specialized products has prompted the production of specialized cold-rolled steel with properties like deep drawability and high tensile strength.

A cold-rolled steel sheet is produced by pickling a hot coil and rolling it uniformly at an appropriate temperature to a thinner thickness. Cold-rolled steel sheet is used in automobiles, home electrical appliances, construction, office equipment and as the material for coated steel sheet.

Commercial Steel

This type of steel is used for general purposes in particular, it is appropriate for manufacturing refrigerator doors, drums and furniture as well as for automobile roofs, fenders, hoods, quarters, oil pans and spring houses.

Structural Steel

This structural steel does not need drawability but require strength.

Enameling

This type of steel can be classifled into deep drawing, drawing and general types, depending on manufacturing methods and final usages. Generally, drawing and deep drawing steels are used for bathtubs, washers and household appliances while commercial sheets are mainly used for kitchenware, which does not require much drawability and gpes through more than three firings.

High Tensile Strength Steel

This type of steel can be divided into commercial, drawing, deep drawing steels, depending on manufacturing methods and end applications, in general, commercial steel is used for automobile seats, rail levers and parking brakes while drawing steel is used for center floors and brackets. Deep drawing steel is appropriate for fenders and hoods and TRIP steel for car doors and bumpers.

Surface Treatment

Surface carbonation, coating, oiling, passivization, pickling, soft melting.

Cold Rolled Steel Size

Coil width from 1000mm to 1250mm and can also specialize in 760mm, 914mm, 1040mm, 1100mm, 1219mm, 1250mm in width.

In thickness, from 0.14mm to 2.0mm

Shipment volumes 500,0000 Ton

Stock around 2000 Ton

Minimum Order Quantity 25 Ton

Packaging And Shipping:

1. Inside: waterproof kraft paper and plastic packaging.

2. Exterior: covered with steel plate, steel plate will be tied to the steel plate.

We can also meet other customer requirements to meet the export shipping standards of packaging. Well packaged sea shipping 20'container.

We can accept flexible payment terms, such as, TT, LC  ect.

Application & Typical End Uses

Automotive Parts, Electrical Motors, Lighting Ballasts, Major Appliances, Racking/Shelving, Water Heaters, Pools (Above Ground/Inground), Commercial Doors, Garage Doors, Drums And Pails, Strapping – Seals, Tubular Goods.

Packaging And Shipping:

1. Inside: waterproof kraft paper and plastic packaging.

2. Exterior: covered with steel plate, steel plate will be tied to the steel plate.

We can also meet other customer requirements to meet the export shipping standards of packaging. 

Our Service:

1. 24 hours on line and prompt reply;

2. Free sample offered;

3. Flexible payment term with L/C at sight, TT, ect;

4. Big quantity supply and short delivery time;

5. Long period after-sale service.

We Are Professional And International:

We have many experienced employees. Among those, some are professional staffs who have worked in the international steel field for over 20 years. With excellent team-work, we know well about how to handle iron and steel international business with professional service which has brought our continuous business growth and our customer's satisfaction from the beginning.