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General cold rolled plates and coils should be continuously annealed (CAPL unit) or annealed in the hood furnace to eliminate cold hardening and rolling stress, to achieve the mechanical properties specified in the corresponding standards.
Cold rolled steel plate surface quality, appearance, dimensional accuracy are better than hot rolled plate, and the thickness of its products right rolled thin to 0.18mm or so, so favoured by the majority of users. Cold rolled steel coil as a substrate for the deep processing of products, become high value-added products. Such as electro-galvanized, hot-dip galvanized, fingerprint-resistant electro-galvanized, colour-coated steel coils and vibration-damping composite steel, PVC laminated steel.
Advantages of cold rolled steel:
(1) Higher precision, cold rolled strip thickness difference of no more than 0.01~0.03mm.
(2) Thinner dimensions, cold rolled thinnest can be rolled 0.001mm steel strip; hot rolled can now be as thin as 0.78mm.
(3) Superior surface quality, cold rolled steel plate can even produce a mirror surface; while the surface of the hot rolled plate has iron oxide,pockmarks and other defects.
(4) Cold rolled plate can be adjusted according to user requirements of its school performance such as tensile strength and process performance such as stamping performance.
Uses of cold rolled steel:
(1)Furniture and appliance manufacturing: Cold rolled mild steel coils and plates are commonly used to manufacture steel furniture, housings and parts for refrigerators, washing machines and other household appliances. Their high strength, corrosion resistance, ease of processing and surface finish make them ideal materials for manufacturing these products.
(2) Automotive Manufacturing: Cold rolled steel coil is also a widely used material in the automotive industry for body, chassis and engine applications. It has the characteristics of high strength, light weight, corrosion resistance, good stamping, etc., which can meet the requirements of the automotive industry for materials.
(3) Building materials manufacturing: cold rolled steel coils can also be used to manufacture building materials, such as steel structures, steel frames, steel plate facades and so on. Its high strength, good seismic performance, easy processing, corrosion resistance and other characteristics can meet the requirements of building materials.
In addition, cold rolled mild steel plate is also widely used in printing iron drums, construction, building materials, bicycles and other industries. Overall, due to its excellent performance, cold rolled mild steel coils and plates are widely used in many fields.
| Deliverable Grade | ||||||||
| Standard | Q/BQB 408 | JIS G3141 | JFS A2001 | EN 10130 | DIN 1623 | ASTM A1008 | GB/T 5213 | ISO 3574 |
| Grade | BLC | SPCC | JSC270C | DC01 | St12 | CS | CR1 | |
| BLD | SPCD | JSC270D | DC03 | RRSt13 | DS | CR2 | ||
| BUSD | SPCE | JSC270E | DC04 | St14 | DDS | SC1 | CR3 | |
| BUFD | SPCF | JSC270F | DC05 | EDDS | SC2 | CR4 | ||
| BSUFD | JSC260G | DC06 | SC3 | CR5 | ||||
| Standard | Grade | Chemical Composition of Cold Rolled Mild Steel(%) | Mechanical properties of cold rolled steel | ||||||
| C | Si | Mn | P | S | Yielding Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | ||
| JIS G3141 | SPCC | 0.15 max | - | 0.60 max | 0.10 max | 0.05 max | |||
| SPCD | 0.12 max | - | 0.50 max | 0.04 max | 0.04 max | ≤ 240 | ≥ 270 | ≥ 41 | |
| SPCE | 0.10 max | - | 0.45 max | 0.03 max | 0.03 max | ≤ 220 | ≥ 270 | ≥ 43 | |
| SPCF | 0.08 max | - | 0.45 max | 0.03 max | 0.03 max | ≤ 210 | ≥ 270 | ≥ 45 | |
| JIS G3141 Surface quality classification: B-finish; D-mirror finish Heat treatment or state: A - annealed; S - tempered , 8 -1/8 hard, 4-1/4 hard, 2-1/2 hard, 1-hard | |||||||||
| EN 10130 | DC01 | 0.12 max | - | 0.60 max | 0.045 max | 0.045 max | 140-280 | 270-410 | ≥ 28 |
| DC03 | 0.10 max | - | 0.45 max | 0.035 max | 0.035 max | 140-240 | 270-370 | ≥ 34 | |
| DC04 | 0.08 max | - | 0.40 max | 0.030 max | 0.030 max | 140-210 | 270-350 | ≥ 38 | |
| DC05 | 0.06 max | - | 0.35 max | 0.025 max | 0.025 max | 140-180 | 270-330 | ≥ 40 | |
| DC06 | 0.02 max | - | 0.25 max | 0.020 max | 0.020 max | 120-170 | 270-330 | ≥ 41 | |
| Surface type: A, B; Surface specification: b=special smooth, g=smooth, m=non-glossy, r=rude Example of plate naming: EN 10130+A1-DC03-B-g where B is the surface type and g indicates that the surface specification is smooth | |||||||||
The cold rolled steel coil (plate) production process is as follows:
1.Raw material preparation: cold rolled steel coil production mainly uses hot rolled coil or hot rolled steel plate as raw materials these raw materials first need to carry out quality checks to ensure that it meets the production requirements
Pre-treatment: The raw material is heated and cleaned to remove surface oxides and dirt, making the surface of the billet smoother and ready for subsequent processing.
2.Cold rolling: the raw material is fed into multi-pass cold rolling mills for rolling These mills usually consist of 4-6 passes, each with a decreasing diameter of rolls, and the raw material is rolled to the required thickness and width by pressing and stretching In the process of cold rolling, surface treatments such as embossing, trimming, and polishing are also carried out on the steel plate.
3.Pickling: After rolling, the steel plate is pickled to remove the oxide skin and rust scale on the surface and to improve the flatness and finish of the steel plate surface.
4.Oiling: After pickling, the steel plate is oiled to prevent surface oxidation and corrosion, and to reduce friction and scratches during stacking, transport and processing.
5.Cutting: The steel plate is cut into the required length and width to meet the needs of different industries.
6.Packaging: The cut steel plates are packaged and labelled with relevant information, such as plate specifications, batch number and production date.
| NO. | Packing Name | Main Material | Usage |
| 1 | Bare Packing | 1.Iron angle bead 2.Binding Belt | Area around Tianjin;short distant with cartage; use for cold rolling coil |
| 2 | Simple Packing | 1.Iron angle bead 2.Antirust paper 3.Binding Belt | Area around Tianjin;short distant with cartage; use for cold rolling coil |
| 3 | Standard Packing | 1.Antirust paper 2.Antirust film 3.Paper angle bead 4.Inside plastic protective plate 5.Outside packing boarding 6.Jron angle bead 7.Binding belt | Cold Rolling coil southern of china ocean shipping; basic plate for coating; home appliance; automative sheet |
| 4 | Superior Packing | 1.Antirust paper 2.Antirust film 3.Paper angle bead 4.Paper washer 5.Paper angle bead 6.Galvanize packing boarding 7.Galvanize packing boarding 8.Iron angle bead 9.Binding belt | Cold Rolling coil; southern of china ocean shipping; basic plate for coating; home appliance; automative sheet |
Shandong Chicago Materials Ltd. is a leading exporter of steel products. We offer a wide range of products including aluminum, steel plates, steel pipes, steel sheet piles and construction steel such as rebar, beams, rounds and flats. We mainly serve markets in Southeast Asia, the Middle East, Russia, North America and Central Asia.
We have warehouses and processing plants in several cities in China to ensure efficient and timely delivery of products to our valued customers. Our dedicated logistics department handles all aspects of transportation, ensuring the smooth operation of the entire supply chain.
We take pride in the fact that our products have comprehensive certifications that guarantee quality and reliability. Our commitment to providing quality materials at competitive prices sets us apart in the industry.
At Shandong Chicago Materials, we strive to exceed the expectations of our customers by providing superior products and quality services. We are confident in our ability to fulfill the various needs of our customers and look forward to building long-term partnerships with them.
Q:What are the main products our company offers?
A:Our company specializes in steel export business, including aluminum, steel plates, steel pipes, steel sheet piles, and construction steel, such as rebar, steel beams, round steel, flat steel, and so on.
Q:What is the minimum order quantity for steel products?
A:Minimum order quantities for steel products may vary depending on the specific product. Please contact our sales team for more information on the minimum order quantity of the product required.
Q:Are customized steel products or sizes available?
A:Yes, we can provide customized steel products or sizes according to your specific requirements. Detailed specifications can be provided to our sales team.
Q:What are the shipping options for international orders?
A:We offer a variety of shipping options for international orders, including ocean and air freight. The choice of shipping method will depend on factors such as order quantity, destination and urgency. Our sales team will guide you in selecting the most appropriate shipping option.
Q:How long does it take to deliver steel products?
A:Delivery time is usually 5 working days for less than 500 tons and less than 10 working days for more than 500 tons.
Customized products are estimated based on order quantity, processing difficulty, etc.
Q:Do you offer quality certification for steel products?
A:Yes, we offer quality certifications for steel products, including steel mill test certificates and related product certifications. Upon request, we can provide these certifications to ensure product quality and compliance.
