HOT-DIP GALVANIZED STEEL COIL OF HIGH QUALITY

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 10000 m.t./month

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Hot Dipped Prepainted Galvanized Steel Coils/Prepainted Cold Rolled Steel

· Standard: AISI, ASTM, BS, DIN, GB, JIS

· Grade: SPCC, SPCD, Q195, DX51D

· Thickness: 0.15-5.0mm

· Model Number: coil

· Type: Steel Coil

· Technique: Cold Rolled

· Surface Treatment: Galvanized

· Application: Container Plate

· Special Use: High-strength Steel Plate

· Width: 600-1250mm

· Length: depends

· commodity: hot dipped galvanized steel coil

· technique: cold rolled

· thickness: 0.15-5.0mm

· width: 600-1500mm

· surface treatment: galvanized

· zinc coating: 50-275g/m2

· coil weight: 3-7 tons

· coil ID: 508/610mm

· spangle: zero spangle, regular spangle, small spangle, big spangle

· payment term: by L/C or T/T

Q: What are the different types of steel coil cutting processes?: Various industries utilize several different steel coil cutting processes. These processes include: 1. Shearing: The most widely used and simplest method of steel coil cutting involves utilizing a shear blade to cut the coil material into desired lengths. This can be done either manually or with the assistance of automated machinery. 2. Slitting: A process designed to cut wide coils into narrower strips, slitting involves passing the coil material through a set of circular knives that cut the steel into smaller coils or strips of the desired width. 3. Laser cutting: Renowned for its precision and efficiency, laser cutting involves using a high-powered laser to melt or vaporize the material along a predetermined path. This method is commonly employed for intricate designs or when high accuracy is required. 4. Plasma cutting: Another method of cutting steel coil involves using a plasma torch that generates a high-velocity jet of ionized gas to melt the material. Plasma cutting is known for its speed and ability to cut through thick materials. 5. Waterjet cutting: This process utilizes a high-pressure stream of water mixed with abrasive particles to cut through steel coil. Waterjet cutting is frequently chosen when the material being cut is sensitive to heat or when precision is necessary. 6. Saw cutting: A traditional cutting method, saw cutting involves using a saw blade with teeth to cut through the material. It is particularly effective for thicker materials and can be performed manually or with the aid of automated machinery. These represent just a few of the many steel coil cutting processes commonly employed. The choice of cutting method relies on several factors such as the material's type and thickness, desired accuracy, speed, and cost-effectiveness.

Q: I'm a big fan of stainless steel and sterling silver, but not of the humidity of the country I'm in. Therefore I sweat more. Gross, I know. I'm buying a necklace chain for my ring.So does sweat contribute to tarnishing of silver and steel? The real kind?: steel shouldn't really tarnish, it rusts and moisture increases that. Silver tarnishes when exposed to air and sulfur. Moisture increases the process a bit, but it happens anyway. Sweat is not gross, it's a necessary function of your body, otherwise you would die. A lot of sports people wear jewelry and they sweat a lot. If you wear the jewelry all the time, that will prevent the tarnish a bit. If you take it off, clean it (water and dish washing liquid), dry it and put it in a zip lock back to keep it away from air and moisture. In the end, cleaning the jewelry is quick and easy so don't worry about it.

Q: What is the width range of steel coils?: The width range of steel coils can vary depending on the specific type and purpose of the coil, but it typically falls within the range of 600 mm (23.6 inches) to 2,200 mm (86.6 inches).

Q: were iron age weapons made of steel?: Even in very early iron, a small amount of steel was produced by carburization, where the iron picks up carbon by laying in hot coals before quenching. This produces a thin layer of steel on the surface of the iron. By about 300 BC Damascus steel was being produced by the crucible method on the Indian subcontinent, and the Romans used steel from Noricum. In the first century BC the Chinese were melting cast iron and wrought iron together to make steel.

Q: 420 440 1045 or 1065 ive bought knifes with these steel grades and i want to know which one is better.: SAE 440 is the best. Classified as high grade cutlery steel. There are various grades of 440: A, B, C, and F. 440 A is the most stain resistant while 440 C has the most carbon and can achieve the highest hardness (Best edge Retention). SAE 440 Chemistry: 16 - 18% Chromium, 0.60 - 1.2% Carbon, 0.75% Molybdenum. SAE 420 is pretty good. Classified as cutlery steel, it is a stain resistant grade but has less chromium and significantly less carbon than SAE 440. SAE 420 Chemistry: 12 - 14% Chromium, 0.15% Carbon (min), 0 Molybdenum Chromium is what makes the steel corrosion resistant. It also adds toughness. Molybdenum adds extra corrosion resistance and adds hardenability. So you can see by chemical components that 440 is highest quality although that also means more cost. 1045 and 1065 are low quality steels and you should probably never use them for a knife. The 1 indicates plain carbon steel with little other alloying elements. The last two digits indicate how much carbon is in the steel. 1045 has 0.45% carbon, mid-range hardenability. 1065 has 0.65% carbon, high hardenability. So if I had to choose I would choose 1065 over 1045 but the difference isn't that noticeable. Everything I said here assumes they have all had the optimum Quench and Temper heat-treatment for their chemistry grade.

Q: What is the weight of a steel coil?: The weight of a steel coil can vary depending on its size and thickness. Generally, a steel coil can weigh anywhere from a few hundred kilograms to several tonnes.

Q: How are steel coils inspected for coil weight accuracy?: Steel coils are inspected for coil weight accuracy by using weighing scales or load cells to measure the weight of the coil. The coil is placed on the scale, and the weight is compared to the specified weight range provided by the manufacturer. If the weight falls within the acceptable range, the coil is considered accurate.

Q: What are the common coil surface treatments?: The common coil surface treatments include galvanization, electroplating, painting, and powder coating.

Q: What are the different methods of coil end welding for steel coils?: Steel coils can be welded together using various methods. Some of these methods include: 1. Resistance Welding: By applying an electric current to the coil ends, the heat causes them to melt and join. This method is popular for its efficiency and speed. 2. Laser Welding: A high-energy laser beam is used to melt and fuse the coil ends precisely. This technique ensures high-quality welds. 3. Tungsten Inert Gas (TIG) Welding: TIG welding creates a protective atmosphere around the welding area using a non-consumable tungsten electrode and an inert gas like argon. It produces clean and strong welds, making it suitable for steel coil end welding. 4. Plasma Arc Welding: This method involves using a plasma torch to create an electric arc between the electrode and the workpiece. The intense heat generated melts the coil ends for welding. 5. Electron Beam Welding: A high-velocity beam of electrons heats and melts the coil ends. This technique is used for thick steel coils and offers deep penetration and high welding speed. 6. Friction Stir Welding: By using a rotating tool to generate friction and heat, the coil ends soften and fuse together. Although commonly used for joining aluminum coils, it can also be applied to steel coils. These are just a few examples of the different methods available for welding steel coil ends. The choice of method depends on factors such as desired weld quality, production speed, material thickness, and application requirements.

Q: Im looking at some knives and am wandering if they use good steel one is this case knife and its 54 dollars Do they use good steel or not Iv never had a good experience with Case but am wandering if they use good steel now? if you all have any other recommendations let me hear them I got my Selection from here so any others wont hurt. so basic break down does case use good steel know?: Case knives are top quality in workmanship. Many have collectors vlaue. I once found an antique four-bladed Case knife is a school yard that had a bone handle. There are basically three types of knives purchased by those who purchase them for practical uses: Pocket knives, made principally for whittling and gneral light use Lock bladed knives Sheath knives I'm not including such novleties as switchblades or throwing knives The latter two types of knives are designed more for outdoor use. Typically they are more duarble and have high quality steel that enables the knife to hold an edge for a longer period of time than a knife made of softer steel. Pocket knives, by contrast, have smaller, thinner blades. Moreover, their steel tends to be a little softer. Comparable brands to Case would include Boker, Old- Timer and Uncle Henry (both Schrade-Walden tradenames), Camillus and others. Overall, I think you would be pleased with a Case knife. Their quality certainly exceeds such brands as Imperial or Queen.

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