PREPAINTED GALVANIZED STEELCOIL System 1

PREPAINTED GALVANIZED STEELCOIL

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Product Description:

Specification

1. Thickness: 0.3-0.8mm

2. Width: 914-1250mm

3. Inner Diameter: 508mm

4. Weight of Steel Coil: 3-15MT

5. Available Dipped Layer: 50-150g/m²

6. Surface Texture: Normal Coated

7. Type of coating structure: 2/1 Coat the top surface of the steel sheet twice, coat the bottom surface once, and bake the sheet twice.

8. Front Side Paint Thickness: 15-25μm (bottom paint+top paint)

9. Back Side Paint Thickness: 5-10μm

Mechanical Properties

1. Mechanical properties of base metals

Grade	Tensile Test
Grade	Yield Strength MPa	Tensile Strength MPa	Elongation A80mm % ≥
SGCC	140-350	270-500	22
SGCD	140-300	270-420	26
SGCE	140-260	270-380	30

2. Common performance of front coating

(1). Thickness: ≥20μm

(2). Pencil Hardness: 2H

(3). 60° specular glossiness of coating: >60

(4). 180°bend: ≤3T

(5). Impact: ≥9J

(6). Salt Fog Resistant: ≥500h

(7). Color difference: <3ΔE

Q:What are the challenges in the production of steel coils?: There are several challenges in the production of steel coils. Firstly, maintaining consistent quality and meeting the desired specifications can be difficult due to variations in raw materials, production processes, and equipment performance. Secondly, ensuring efficient and cost-effective production requires careful planning and optimization of various factors such as energy consumption, material handling, and logistics. Thirdly, the steel industry faces environmental challenges related to emissions, waste generation, and resource consumption, which necessitate sustainable practices and compliance with regulations. Lastly, competition in the global market demands continuous improvement and innovation to stay ahead in terms of product quality, cost competitiveness, and customer satisfaction.

Q:Can anyone please tell me what is the DUCTILE TO BRITTLE TRANSITION TEMPERATURE IN STEEL LOW CARBON?Thanks.: The temperature varies with the type of low carbon steel and how it is heat treated. Common structural steel actually have a transition temperature as defined by Charpy impact tests to be in the 50 degree range. Most low carbon steel pipe such as ASTM A53, A106 and pressure vessel plate such as A212, a515 also have 50 degree range Charpy test results. If you look at materials with fine grain such A516 plate, A300 pipe and similar materials then the transition temperature drops to around -50 degrees. The thing to remember is in addition to the transition temperature you also have to have the material at a high stress level, a stress riser such as a notch and then the sudden application of additional stress to get an actual brittle fracture failure. That is why bridges make from common structural steel don't fail at temperatures as low as -40 degrees.

Q:I have never owned a non-stainless steel chef's knife and have been looking at some to buy recently, but all of them have various degrees of wear and use. They say that the wear is normal for non-stainless steel knives, but how can I tell if it is too much wear, or if the blade is clean?: cold rolled steel waers as you carve meat. If the blad if to thin you may want a better one. Utica knife in utica N.Y. made them up to about 10 years ago and i still buy them at auctions.

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:What are the dimensions and weight range of steel coils?: Depending on the intended use and industry requirements, steel coils can vary in dimensions and weight ranges. Typically, the thickness of steel coils ranges from 0.15mm to 3.5mm, while their width ranges from 600mm to 2,000mm. The weight range of steel coils can widely vary, commonly falling between 5 and 25 metric tons. Factors such as the type of steel, the production method, and the desired application determine the specific dimensions and weight range of steel coils.

Q:hello guys. im totally new to this metalwork things. i need to do it for my project. i need to join stainless steel wires to build some kind of structure (eiffel tow. for example).i already have the wire and the torch. now the question is: where do i get silver solder? is it expensive? and what is flux for? is it necessary? what does it do? is it expensive?thank u for ur time guys! :): the flux you need is powdered borax

Q:What are the different grades of steel used in coil manufacturing?: There are several grades of steel used in coil manufacturing, including but not limited to, low carbon steel (e.g., ASTM A36), high carbon steel (e.g., ASTM A684), stainless steel (e.g., AISI 304), and galvanized steel (e.g., ASTM A653). These grades are chosen based on the desired properties and requirements of the coil being manufactured.

Q:What are the different coil slitting methods used for steel coils?: Steel coils can be slit into smaller, narrower coils using various methods. These methods serve the purpose of cutting the coils to suit specific applications. 1. The most commonly used method for coil slitting is blade slitting. Circular knives or blades are employed to cut the steel coil into narrower strips. These blades are placed at predetermined intervals and usually attached to a rotating shaft. As the coil passes through the blades, their circular motion slices through the coil, resulting in the desired narrower strips. 2. Another method, known as rotary shear slitting, involves the use of two sets of rotary shear knives to cut the steel coil. These upper and lower sets of knives rotate in opposite directions, creating a scissor-like cutting action. As the coil is fed through the shearing blades, the sharp edges of the knives slice through the coil, producing the desired narrower strips. 3. Sliding shear slitting is yet another method utilized for coil slitting. This method involves a stationary upper knife and a moving lower knife to cut the coil. The lower knife moves back and forth across the coil while the upper knife remains fixed. As the coil passes through the moving knife, it is cut into narrower strips. 4. Crush slitting is a less common method employed for coil slitting. In this method, the steel coil is fed through a set of rollers equipped with blades. Although the blades are not sharp, the pressure exerted by the rollers crushes and fractures the coil, resulting in the creation of the desired narrower strips. 5. Laser slitting is a modern and precise method used for coil slitting. It utilizes a laser beam to cut through the steel coil. The laser beam is directed onto the coil, and its high intensity melts and vaporizes the steel, creating a narrow slit. Laser slitting offers high accuracy and a clean cut, making it suitable for specialized applications. Each of these coil slitting methods possesses its own advantages and limitations. The choice of method depends on factors such as the type of steel, desired strip width, production volume, and required precision. Manufacturers select the most suitable method based on their specific requirements and the properties of the steel coils they are processing.

Q:Can steel coils be coated with vibration-damping materials?: Yes, steel coils can be coated with vibration-damping materials. The application of vibration-damping coatings can help reduce the transmission of vibrations and noise, enhancing the performance and durability of steel coils in various applications.

Q:i would like to make a dmascus steel knife, i have the cable but im not sure if its damascus steel or not, how do i tell? and if it isnt damascus steel how do i make a bar of it?: Here's what you need, the cable should be a minimum of 9/16 with large wires. You need some borax (20 mule team from the store). A good hot coal, coke, or gas forge. If the cable has fiber rope in the center it will need to be removed. Fuse the ends of the cable to keep them from coming apart. I use my welder and while I'm at it I weld a handle to make it easier. Heat it in the forge when the forge is properly heated, rotate it. Some people will burn the oil out, but I've found that the forge does that just fine. Rotate the cable while it's heating. When it begins the turn red pull it out and sprinkle the borax over it, don't hold back use a lot. It will begin to melt and bubble into the steel. Put the cable back in the forge, rotate and watch. This is the critical part. When the steel starts to turn from orange/yellow to almost yellow/white take it out and lightly (I use a 2lb hammer) begin hammering the cable into a square or rectangle. If you do it right you'll notice that it will begin to fight the hammer, that's when you know the weld it taking place. You'll have to repeat the process down the length of the cable. Once you have the billet made you can begin the process of shaping the edge and tang. Once you have it shaped, follow proper forge procedure then grind all the yuck off and finish shaping. Then harden and temper and finish it out. Good luck. I almost forgot a very important part. Befor you start hammering put the cable in a vice while at welding temp (if you are strong you can use a couple of plyers) and twist it tight. On the next heat hold the cable in your left and and lay it on the anvil. Concentrate on your light hammer blows being on your side of the cable. This forces the cable strands together. If you are using smaller cable like 9/16 you can double the cable up and weld two peices together, it is easier and makes for a prettier blade. Doing this you don't have to worry about twisting the cable and you can hit it much harder to start with.

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