This is the Prepainted Galvanized steel Coil

This is the Prepainted Galvanized steel Coil System 1

This is the Prepainted Galvanized steel Coil

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 100000 m.t./month

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1.Structure of Prepainted Galvanized steel Coil

With Gi as base metal, after pretreatmet (degrease and chemical treatment) and liquid dope with several Layers of color, then after firing and cooling, finally the plate steel is called pre-painted galvanized steel ( PPGI) .Pre-painted galvanized steel is good capable of decoration ,molding, corrosion resistance

2.Main Features of Pre-painted Galvanized steel Coil

• Workability, durability

• Smooth and flat surface

• Excellent heat resistance performance

• Good formability

• High strength

• Excellent process capability

• Good visual effect

3.Pre-painted Galvanized steel Coil Images

This is the Prepainted Galvanized steel Coil

4. Pre-painted Galvanized steel Coil Specification

Standard: ASTM, GB,JIS,JIS G3302 ASTM 755 EN10169

Grade: DX51D CGCC CS

Chemical composition:

0.150

0.476

11.231

12.50

0.900

0.039

0.010

5.FAQ of Prepainted Galvanized steel Coil

1. How long can we receive the product after purchase?

Usually within thirty working days after receiving buyer’s advance payment or LC. We will arrange the factory manufacturing as soon as possible. The cargo readiness usually takes 15-25 days, but the shipment will depend on the vessel situation.

Q:How is the critical temperature of structural steel affected by fireproofing? What temperatures can fireproofed structural steel withstand?: This would depend upon the method of fireproofing. Steel used to be insulated with an asbestos coating. Of course the steel under the insulation had the same critical temperature as the uncoated steel but was protected from external heat by the insulation. More commonly it would be an alloy and there are so many that one could not guess except to say it should be higher than the original.

Q:How are steel coils used in the manufacturing of pressure vessels?: Steel coils are used in the manufacturing of pressure vessels as they provide a strong and durable material for constructing the vessel's shell. The coils are typically rolled and welded to form the cylindrical shape of the pressure vessel, ensuring high structural integrity and the ability to withstand high pressure.

Q:How are steel coils used in the production of industrial tanks?: Steel coils are used in the production of industrial tanks as they are rolled and shaped into the desired form, providing the necessary strength and durability for the tank structure.

Q:How are steel coils cut to size?: Steel coils are cut to size using a process called slitting, where the coil is fed through a series of rotating circular blades that make multiple cuts along its length. The blades are spaced at specific distances to achieve the desired width, and the cut strips are then rewound into separate coils.

Q:How are steel coils used in the production of electrical motors?: Steel coils are used in the production of electrical motors as the core component of the motor's electromagnet. The coils are wound around an iron core to create a magnetic field when electricity flows through them. This magnetic field interacts with other components in the motor to generate mechanical power, allowing the motor to function efficiently.

Q:What are the challenges in welding steel coils?: In order to guarantee successful and high-quality welds, it is necessary to address various challenges encountered when welding steel coils. One primary challenge involves achieving appropriate joint preparation. Steel coils often exhibit different surface conditions, such as rust, scale, or oil, which must be cleaned or eliminated before welding. This demands extensive cleaning and preparation to establish a clean and reliable welding surface. Another challenge lies in controlling the heat input. Due to the thin nature of steel coils, excessive heat can result in distortion, warping, or even burn-through. Welding operators must exercise careful control over the heat input to prevent such issues and uphold the integrity of the coils. Additionally, the presence of residual stresses poses a significant difficulty. Steel coils typically endure various stresses during the manufacturing, transportation, and handling processes, which can lead to distortion or cracking during welding. To mitigate these stresses and prevent potential defects, sufficient preheating and post-weld heat treatment may be necessary. Ensuring proper weld penetration is also of utmost importance. Steel coils often possess varying thicknesses, making it challenging to achieve consistent and adequate weld penetration throughout the joint. Welding operators must select appropriate welding parameters and techniques to guarantee complete fusion and a robust bond. Lastly, the size and weight of steel coils can create logistical challenges during welding. Specialized equipment and precise positioning are required to handle large and heavy coils, ensuring safe and efficient welding. Additionally, the length of the coils may necessitate multiple passes or continuous welding, demanding skilled operators and meticulous coordination. In conclusion, welding steel coils necessitates careful attention to joint preparation, heat control, stress relief, weld penetration, and logistical considerations. Overcoming these challenges guarantees the production of welded steel coils that are of high quality and durability.

Q:How do steel coils perform in extreme weather conditions?: Steel coils are highly durable and resistant to extreme weather conditions. They can withstand intense heat, freezing temperatures, heavy rain, and strong winds without losing their structural integrity or performance.

Q:What are the different types of steel coil surface treatments?: There are several different types of steel coil surface treatments, including hot-dip galvanizing, electro-galvanizing, painting, and powder coating.

Q:I am refinishing a table and on my can of polyurethane, it indicates not to sand with steel wool prior to application. Why is that?: it can turn dark! use 400 to 600grit wetdry sandpaper watch your edges!!!

Q:How are steel coils welded together?: Different methods can be employed to weld steel coils together, depending on the specific requirements and the type of steel being used. Electric resistance welding (ERW) is a common method where an electric current is utilized to generate heat in the coils, melting their edges. Pressure is then applied to join them together. ERW is a cost-effective and speedy technique for welding steel coils. Thinner steel coils are often welded using high-frequency induction welding (HFIW). This involves the use of an induction coil to produce an alternating magnetic field, inducing an electric current in the coils. The resistance of the coils to this current generates heat, causing the edges to melt and form a weld. For thicker and heavier steel coils, submerged arc welding (SAW) is commonly employed. This technique utilizes a granular flux and a continuous electrode that is fed into the weld area. The flux melts, creating a protective shield for the weld pool, while the electrode melts to form the weld. SAW is a robust and efficient method for welding steel coils. In addition to these methods, laser welding and gas metal arc welding (GMAW) can also be utilized for welding steel coils. Laser welding offers high precision and speed, while GMAW, also known as MIG welding, utilizes an electric arc between a consumable wire electrode and the steel coils to create a weld. Irrespective of the welding method employed, successful welding of steel coils hinges on proper edge preparation, maintenance of appropriate heat and pressure levels, and the use of correct welding techniques.

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