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The cold-rolled coil product is appreciated for its diverse applications and outstanding advantages. So how is cold rolled steel manufactured and what are its current popular applications, all questions will be answered in the article below!What is the cold rolled coil?Cold-rolled steel (trademarked CRC) is generated at the final stage of making steel from billet. Cold rolled coils are produced based on steel billets at low temperatures, more specifically, CRC has origin from hot rolled steel, then it will be processed through a cool process to make the surface become smooth and improve eye-catching brightness.Features of cold rolled coils Cold rolled coil often possesses a glossy surface by an oil layer treated in the rolling process. Besides the smooth surface, the product also offers outstanding durability advantages 20% higher than hot rolled coil. Along with that, cold rolled coil also has good impact resistance and ductile properties, so it is easy to bend and cut on requests.However, because it is still a metal, the cold rolled coil is easy to oxidize if it is not well preserved. Specifically, when the product exists in highly acidic or alkaline environments as well as it has to suffer from harsh weather environments, it will easily cause the steel surface to rust. To overcome this situation, the manufacturer usually has to periodically maintain it by applying a layer of oil to create a protective film for the steel core.Process production of cold rolled coilsThe steel production process will have to go through many separate stages that require strict control to ensure the hardness of the steel and avoid the case that the compositional elements are changed during the period of production.Stage 1 - Preparation of input materials and removing rust surface: the main input material of cold rolled coil is hot rolled coil. Hot rolled coil often brings low aesthetics through the rough appearance, so the manufacturer will proceed to spray a specialized acid directly on the surface to clean it.Stage 2 - Cold rolling stage: the manufacturer will use mechanical force with oil to roll the steel at a low temperature which is equal to room temperature at that time. This cold rolling process has the effect of making the steel structure stronger as well as changing the surface of the steel. However, in principle, the cold rolling process only changes the steel structure and it will keep the original steel's compositions. Because of those technical standards, cold rolling stages will require strict control in order to avoid surface cracking due to excessive force.Stage 3 - Soft annealing: steels that have undergone the cold rolling process will often be in hard condition, so they will be treated with a next step, which is soft annealing. The steel will now be annealed in an electric furnace containing 100% hydrogen gas to help remove the hardness after rolling, enhancing the ductility of the steel to make use of construction applications.Application in specific fieldsDepending on outstanding advantages such as shiny appearance, good loading resistance, cold rolled coil is widely used in the construction, manufacturing and mechanical industries. It also shows some benefits to human daily life. Specifically, some popular areas include:Construction works: taking advantage of the sturdy structure thanks to the low carbon content, people often use CRC for many construction purposes. Some practical applications in popular construction include making structural frames, purlins, ...Machine parts, spare parts for automobile and aircraft equipmentHousehold and consumer appliances: refrigerators, air conditioners, stoves,... Looking for cold rolled coil suppliers directly from Vietnamese factoriesSince the company was established and entered the market until now, MRS Steel has always maintained our mission of being a pioneer in the field of providing comprehensive steel solutions for international importers. Recognizing the important role of cold rolled steel, MRS Steel has been present and accompanies you in finding reputable sources.Based on many years of experience in the steel industry, we are confident in accompanying you in the steel import strategy. Vietnam steel market is considered a potential market with the participation of countless large and small manufacturers, acquiring a consultant  in steel will help you significantly optimize time and cost in the future. By finding out the source of goods as well as knowing the detailed price list, you can promptly adjust and orient your trading planning based on useful data. 

Vietnam's pre-painted galvalume/galvanized steel production line follows the most advanced technology from Danieli and Tenova metallurgical and steel-rolling corporations, so it produces products with high durability, good resistance to corrosion and rust, and many beautiful designs and patterns. Below are the Top 10 Applications of Pre-painted Galvanized/ Galvalume (PPGI/ PPGL) in practice.1. Roofing and Cladding (Single Skin)Roofing and cladding are the most apparent application of PPGI/PPGL in the construction sector. The roof sheets are usually corrugated iron with 6 waves, 9 waves, 11 waves, 13 waves, etc. have an edge that bricks and tiles about lighter, reducing the load on the frame, columns, and foundation.PPGI/PPGL is also the main material for coating and protecting building surfaces. Aluminum cladding are 1/3 of the weight of steel, but still ensure the stability and sustainability of the project. PPGI has perfect anti-rust and anti-corrosion ability in the long run, so it is more and more preferred as a protective panel for all constructions.2. Sandwich Panel (Double Skin)Panel Polyurethane Sandwich (Panel PU) is a high-strength material composed of 3 layers of polyurethane foam surrounded by outer layers of galvanized/aluminum/color steel. PU panel has high strength, good insulation ability, extremely light in weight but high load-carrying capacity. They are used to cover cold storage, roof, interior or exterior walls of buildings.3. Rolling doorsRolling door system is composed of many main parts such as controller, motor, door and other parts depending on the design. Rolling door profiles and bodies are all made of PPGI/PPGL, a material that is light, durable and resistant. Because of this, pre-painted galvalume/galvanized is suitable for exterior use with high life expectancy.4. Agricultural equipment, greenhouses, silos, barnsPPGI/PPGL has a smooth surface, good rust resistance, variety of sizes, easy to shape that is frequently used in irrigation systems. For the animal husbandry, large galvalume or galvanized pipes are used to make feed or waste pipes for livestock and poultry.Greenhouse projects also use PPGI pipes because of the outer and inner surfaces laminated with polyester color paint. In addition, the zinc coating also helps the product to withstand harsh weather conditions well, without affecting the building structure.5. Ceiling AccessoriesCeiling accessories are fireproof, corrosion resistant, thermally stable and weather resistant thanks to their color coated galvanized steel. Because of their light weight, durability, high load-carrying capacity and no change to the overall structure of the building, ceiling accessories are used as decorations for many industrial and civil buildings.6. PartitionsNowadays, partitions have developed into many different types such as fixed partitions, movable partitions, waterproof partitions, glass partitions or partitions made from PPGI, PPGL,…7. Vehicle manufacturing industryPPGI/PPGL is used for manufacturing car doors, beams, wiper blades, trunk lids, oil filters, oil sumps,... Galvanized is also specialized for car and train parts as a base coat for body panels. In the transport industry, the bodywork of caravans and recreational vehicles also uses PPGI because of its high-quality, multi-color coating, which meets the customer's requirements.8. Home appliance industryPPGI has rich colors, smooth surface and high aesthetics, so it is widely used for roofing, windows, doors, interior decoration or household appliances. The front PPGI panel has a polymer linear non-thick polyester resin coating and the back side uses a modified epoxy paint suitable for the surface or cover of refrigerators, washing machines, DVD player housings, air conditioners, Led TVs, microwave ovens,…9. Steel furniturePre-painted steel is widely used to build furniture thanks to high-quality, cost-effective three-dimensional design. Steel furniture products are manufactured by nano-environmental technology, so they are safe for consumers' health, have a long life expectancy. In particular, PPGI is gradually replacing wood and marble to make insulating walls with aesthetics and performance that are not inferior. Some other significant applications of PPGI in the real estate industry include:WardrobeLockersTableBookshelfBed 10. Cold Room, Shelves, Water Chiller, Water Cooler, Water Heater & HVAC EquipmentThe structure of cold rooms or cooling systems is heat and sound insulation to keep the temperature inside lower than outside. PU panels made from color coated galvanized steel are the main materials for the production of various types of cold rooms, Shelves, Water Chillers, Water Coolers, Water Heaters & HVAC Equipments.Above are the top 10 applications for PPGI/PPGI , widely used in many fields of life. Any need to import Vietnam PPGI/PPGL with high quality and good price, please contact MRS Steel via Email vanloc@mrssteel.com.vn for the latest quotation!