PPGI PREPAINTED GALVANIZED COILS with good price

PPGI PREPAINTED GALVANIZED COILS with good price System 1

PPGI PREPAINTED GALVANIZED COILS with good price

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 10 m.t.

Supply Capability:: 100000 m.t./month

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Specifications

1). Zinc coat:60g-275g
2). Color: Any RAL colors to your demands.
3). Paint coating :Normal polyester coating.

PPGI color coated steel coil

Coil weight:4-8tons or according to the require of customor

Zinc coating:40-120g/Sqm

Paint:top paint 15-25mic,back:5-7um.

Color:RAL or as your sample.

Packing:seaworthy packng or as your require.

Technology:double hot double coating.

Equipment:south Korea imported.

1. The base metals for PPGI cold rolled HDG electro-galvanized and hot-dip alu-zinc coated steel. The finish coats of Prepainted Steel Coil can be classified into groups as follows: polyester, silicon modified polyesters, polyvinylidene fluoride, high-durability polyester, etc.

2. PPGI coated with organic layer, which provides higher anti-corrosion property and a longer lifespan than that of galvanized steel sheets.

Q: At what temperature does steel start to warp or soften.: It depends upon the composition of steel. Carbon steel, which does not have many alloying elements, softens around 1200C while with alloying elements, this transition temperature either drops or raises depending upon what is added. Higher carbon makes this temperature drop. This is a very important question for forging since if a lower temperature is used, forging won't be easy and at higher than softening temperature, it is not easy to handle. The temperature at which steel begins to soften is, in general, much above what the metallurgists call AC1 or AC3 temperature.

Q: What are the different methods of heat treatment for steel coils?: There are several different methods of heat treatment for steel coils, each with its own benefits and applications. 1. Annealing: This method involves heating the steel coils to a high temperature and then slowly cooling them, usually in a controlled atmosphere. Annealing helps to relieve internal stresses, improve ductility, and refine the grain structure of the steel, making it softer and more machinable. 2. Normalizing: Normalizing is similar to annealing, but the cooling process is typically faster. This treatment is often used to refine the grain structure and achieve a more uniform hardness throughout the steel coils. It also helps to remove any residual stresses and improve the mechanical properties of the material. 3. Quenching and tempering: In this two-step heat treatment process, the steel coils are first heated to a high temperature and then rapidly cooled by immersion in a quenching medium, such as oil or water. This causes the formation of a hard, brittle phase called martensite. To improve the toughness and reduce the brittleness, the coils are then reheated to a lower temperature and held there for a specific period of time. This process, known as tempering, helps to reduce the internal stresses and increase the ductility and toughness of the steel. 4. Case hardening: Case hardening is a heat treatment method used to increase the surface hardness of the steel coils while maintaining a relatively soft and ductile core. The process involves heating the coils in the presence of a carbon-rich atmosphere, allowing carbon to diffuse into the surface layer of the steel. This creates a hard outer layer, known as the case, while preserving the desired mechanical properties in the core. 5. Stress relieving: Stress relieving is performed by heating the steel coils to a specific temperature and holding them there for a sufficient period of time. This process helps to reduce residual stresses that may have been introduced during previous manufacturing or heat treatment processes. Stress relieving can improve dimensional stability, reduce the risk of distortion or cracking, and enhance the overall performance of the steel coils. Overall, the choice of heat treatment method for steel coils depends on the desired properties, intended application, and specific requirements of the end product. Each method has its own advantages and can be tailored to achieve the desired balance between hardness, toughness, ductility, and other mechanical properties.

Q: what are the characteristics when of iron or steel when stretched? which one could be stretched further? which one stretches more evenly?thankyou: Technically, this is known as ductility. a material which can be permanently bent and stretched is said to be ductile. Pure iron, when it lacks carbon and impurities like sulfur and phosphorus, is relatively soft, ductile, and weak. It's about as soft as brass. It can be stretched to about 50% of it's original length before it breaks. The amount a sample can be stretched without breaking is known as elongation. The key to steel is the addition of about 2 parts per thousand of carbon, or around 0.2%. This alters the crystal structure and makes steel much harder, stronger, and tougher, though it also becomes somewhat less ductile. Mild steel, with a low carbon content, has an elongation of around 30% Adding more carbon makes the steel yet stronger, but further reduces the elongation. Adding more than 2-3% carbon produces what is known as Cast Iron. Cast iron is brittle. It has virtually no ductility. It's pretty cheap to produce though.

Q: What are the different types of steel coil finishes?: There are several different types of steel coil finishes, including mill finish, galvanized finish, painted finish, and stainless steel finish.

Q: What are the safety precautions to be followed while handling steel coils?: When handling steel coils, there are several safety precautions that should be followed. These include wearing appropriate personal protective equipment, such as gloves and safety glasses, to protect against cuts, abrasions, and eye injuries. It is important to use proper lifting techniques and equipment to prevent strains or back injuries. Steel coils should be securely stacked and stored to prevent them from falling or rolling, and caution should be exercised when moving or transporting them to avoid accidents. Additionally, workers should be trained on the safe handling and storage procedures specific to steel coils to minimize any potential hazards.

Q: How are steel coils used in the manufacturing of automotive components?: Steel coils are used in the manufacturing of automotive components by being processed and shaped into various parts such as body panels, frames, suspension components, and engine parts. The coils are typically cut, formed, and welded to create the desired shape and strength required for each specific component. The use of steel coils allows for the production of durable, strong, and cost-effective automotive parts that meet the industry's high standards for safety and performance.

Q: What are the best types of steel for swords: The okorder /

Q: I am building a robot for Bots IQ. In doing so i have the option of building the the armor of my robot out of titanium or tool steel.. which would be the better option.Brief description of Bots IQ: It is a competition where 2 15lb robots go and attack each other with spinning blades, hammers or whatever is designed.: Titanium is a significantly stronger and lighter metal, but is also extremely expensive. If you have the option for titanium, go for it.

Q: How are steel coils used in the manufacturing of appliances?: Steel coils are used in the manufacturing of appliances as they are transformed into various components such as frames, panels, and inner structures. These coils are processed and shaped through cutting, bending, and stamping techniques to create the necessary parts, ensuring durability and strength in the final product.