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In construction, PPGI and PPGL are always on the list of the most popular materials because they help significantly improve building quality. Today, the functions of PPGI and PPGL have been constantly researched and developed by manufacturers of new types of building materials. A good example can be followed by taking advantage of PPGI/ PPGL in Sandwich Panel.Define about Sandwich Panel and its structure.Panel is the name of a popular building material in recent years. Panels are often used for roofing thanks to their thickness and sturdy structure, so they possess excellent heat resistance and sound insulation features.A panel will usually have 3 layers of texture, and the top 3 layers will be bonded together by specialized glue:Outer layer: the outermost layer of the panel is usually composed of pre-painted galvanized or pre-painted galvalume steel. The manufacturer often applies an electrostatic coating layer to increase the roof's aesthetics based on customers' color requirements.Middle layer: the middle layer of the panel is shaped like a thick foam, and the primary use of the middle level is to improve sound resistance and heat insulation. Some common materials to make up the middle layer of the panel can be mentioned as PU, EPS, glass wool, mineral wool...Inner layer: the innermost layer has the same structure as the outermost layer, but manufacturers often skip the color coating step because the innermost layer is considered a hidden layer of the panel, so painting will not be necessary.Some benefits of PPGI/ PPGL in Sandwich PanelSound insulation and heat resistanceA panel's most prominent advantage to the construction project is the ability to sound and heat insulation. Thanks to the acquired 3-layer structure and the foam middle core with a soundproofing effect, the panel will be highly suitable for construction installation in urban areas where there is always noisy pollution.In addition to the good soundproof foam core, the surface layer of the is also equipped with a layer of PPGI/PPGL in Sandwich Panel - a material that is famous for its thermal insulation thanks to its ability to reflect heat from the sun, thereby bringing a relaxed and comfortable working space for users.Fire protectionSteel is essentially a material formed through heat treatment at high temperatures, so steel will not conduct fire. Especially with galvanized steel, the fire situation will be significantly reduced due to zinc layers. The panel with 3 constitutional layers is likened to a fireproof wall because it can survive in an environment that is up to 1000 degrees Celsius. Even in the combusted case, the fire that burns into the steel for a long time only causes the steel to shrink and fade, but not cause the steel to spread fire.Eye-catching colorsTo meet more requirements in construction design, manufacturers are increasingly investing in coating technology along with outstanding color gamut. One of the most common applications is using PPGI/PPGL in Sandwich Panel. Because these are locations installed outside, it is always required to ensure aesthetic quality.Durable and anti-oxidationIf the panel only has a porous layer, it is easily corroded and negatively affected by external factors such as environmental humidity or oxidizing agents. Adding the coated layers on both sides will significantly extend the panel's life up to 50 years.The galvanizing/galvalume layer is not only anti-corrosion, but it also helps the surface of the panel always maintain a bright and new outlook because the zinc-aluminum in PPGI/PPGL has a significant effect on anti-scratch for Sandwich Panel. It can be said that thanks to the combination of PPGI/PPGL and foam core, the panel not only meets the durability standards in structure but also brings sustainable beauty over time.How to choose quality PPGI/PPGL in Sandwich PanelPanels have many types, and each type has its own thickness and unique function, the price when buying the product is also partly affected by each panel type. Finding out and classifying prices will be even more difficult if you are an importer because the price depends a lot on the thickness of the surface corrugated board, the size of the width, the length, etc. Choosing a professional steel solution consultant will be wise for your trading strategy.MRS Steel is currently a partner of many large steel manufacturers in Vietnam, such as Hoa Phat Group, Pomina, and Ton Dong A,...thanks to our close relationship with the factories that will help you access various sources with many different types of steel. Based on our long-term experience and understanding of the steel industry in the Vietnamese market, we are confident that we will be your long-term supporter in solving imported problems, thereby helping you to adjust the plan in time to optimize costs while still receiving quality goods.

Pre-painted Galvanized, also known as pre-coated steel, coil-coated steel, and color steel, is widely used in construction, such as round pipe production, square tube, factory manufacturing, automobile equipment manufacturing, household appliances, civil engineering,... In particular, the world also utilized PPGI for cold room and refrigerated transportation. Let’s get deeper into the outstanding features of PPGI with MRS Steel.1. What is PPGI? Pre-painted Galvanized (PPGI) is a type of galvanized steel coil that is surface treated and coated with a high-grade color layer, acting as a protective and strengthening layer.  Similar to zinc/aluminum alloy or zinc/aluminum/magnesium alloy coated coil products, color-coated corrugated sheet is also produced by hot dipped metallic coated technique.Hot-dip continuous galvalume/ galvanizing (CGL) produces all kinds of zinc-aluminum and zinc-plated steel. First, an annealing furnace is used to change the mechanical properties of surface-treated cold-rolled steel in accordance with order requirements and improve adhesion to the plating layer. The steel tape is then coated with a protective layer (anti-finger, oil, chromium) by the hot-dip galvanizing principle to increase durability and prevent surface oxidation.2. PPGI used for cold room and refrigerated transport2.1. Cold room applicationA cold room is designed and installed with a cooling or freezing system for the purpose of preserving and storing goods to keep the best quality. The particular structure of cold storage is heat and sound insulation to keep the temperature in the warehouse lower than room temperature. Cold storage is classified according to many uses or different types of goods, but all have the same structure of two parts: insulation and refrigeration. Two panels commonly used as cold storage covers are EPS Panels and PU Panels. Panel Polyurethane Sandwich is a high-grade material consisting of 3 layers of polyurethane foam sandwiched between two metal side skins. This material is highly durable, lightweight, and resistant to extreme weather conditions, so it is genuinely appropriate for cold room applications:Polyurethane Sandwich Panel is easy to assemble, transport and dismantle, suitable for mobile cold storage.The outer and inner shell of the PU Panel is made of galvanized steel with a plastic coating, and the panels are bonded together by a quick-action eccentric device.The panels are capable of bearing loads up to 2000 kg/m2Cold storage fully equipped with electric lighting system, refrigerant Freon 22 and 404A. 2.2. Refrigerated transport applicationRefrigerated Freight Transportation is a particular industry in today’s globalized world, with constant temperature control, enabling the goods to remain at the desired temperature throughout their journey.The basic idea behind cold transport, which uses salt and ice to keep temperature-sensitive goods cool, dates back to the 1800s. Currently, refrigerated transport vehicles are usually made from Polyurethane Sandwich Panels. PU panels can improve storage efficiency, reduce fuel consumption, and reduce the vehicle's overall weight due to their durability and lightweight. The bodywork is comprised of PPGI sandwich boards with a thickness of 50mm for freight and 100mm for refrigerated vans/trucks.Besides PU Panels, mild steel is manufactured to specialized specifications to make refrigerated truck bed floors. The structure of mild steel contains about 0.05 - 0.3% carbon, so it is very malleable and ductile as required. When mild steel plates are galvanized, they will have an additional layer of protection against rust, oxidation, high strength, and good heat retention.All refrigerated trucks are equipped with the best refrigeration units - DANA WATER HEATERS & COOLERS. The temperature monitoring system in the driver's cab can easily adjust the proper temperature. 3. Vietnam's production capacity of color-coated galvanized steelAccording to a report by the Vietnam Steel Association, coil, galvanized steel, and PPGI are the most exported steel products in 2022, with galvanized steel exports reaching 1.4 million tons, equivalent to 1.5 billion USD.Vietnam's galvanized/aluminum/color steel products are aimed at exporting to world markets such as Europe, the United States, ASEAN,..., so they must meet the following standards: JIS 3321: 2010 of Japan; BS EN 10346: 2009 of Europe; AS 1397:2001; ASTM A792 of the United States… Zinc-aluminum alloy plating/galvanizing lines are imported from leading corporations specializing in metallurgical and steel-rolling equipment, such as Danieli, Tenova, and G7 countries with the best-advanced technology.For details on importing PPGI used for cold rooms and refrigerated transport from Vietnam, please contact MRS Steel via Email: vanloc@mrssteel.com.vn

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!