Galvanized Steel Coil Hold Rolled High-strength CNBM

Galvanized Steel Coil Hold Rolled High-strength CNBM

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Loading Port:: Guangzhou

Payment Terms:: TT OR LC

Min Order Qty:: 20 m.t.

Supply Capability:: 3000 m.t./month

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2.Packaging & Delivery

Packaging Details:	standard package
Delivery Detail:	1-4 week

3.Feature

galvanized coil steel
cold rolled galvanizing steel coil
galvanized iron steel coil

4.Specifications

Thickness	0.15mm--2.0mm
Width	50--1250mm
Zinc Coating	40gsm—275gsm
Spangle	Big, small regular spangle and zero spangle
Surface Treatment	Chromate, Galvanized, Skin Pass, Passivity and Oiled(un-oiled)
ID	508mm or 610mm
Coil Weight	3--7 Metric Tons and as requirements
Production	12,000 metric tons per month
More information of Galvanized Steel Coils/GI/PPGI/HDG
Payment Term	T/T or L/C (We usually charge 30% of the deposit first.)
Delivery Port	Qingdao Port or Tianjin Port
Delivery Time	Within 20 days after receipt of T/T or L/C
MOQ	25 metric tons or one 20 feet container
Application	General use, Color coating, Corrugated Roofing making, Outside of the buildings Structure, Deep Drawing and etc.
Ambition	Reliable product, Competitive price, On-time delivery and High standard service.

5.What is the application of Steel Coil?

There are two sides,one is out side: Workshop, agricultural warehouse, residential precast unit, corrugated roof, roller shutter door, rainwater drainage pipe, retailer booth;the other is inside: Door, doorcase, light steel roof structure, folding screen, elevator, stairway, vent gutter.

Q: What is the (balanced) chemical equation for steel?: Steel is about 5% carbon and about 89 % iron, the rest is impurities of all sorts That is considered low carbon steel There are precise formulas for other steels like High Speed Steel, High Tensile low carbon, and thousands of other steels. Specialty steels are a big business item with thousand of tons sold each year for specialty applications.

Q: How do steel coils contribute to sustainability efforts?: Steel coils contribute to sustainability efforts in several ways. Firstly, steel coils are made from recycled steel, reducing the need for virgin raw materials and minimizing the environmental impact of mining and processing. Additionally, steel coils are highly durable and long-lasting, meaning that products made using steel coils have a longer lifespan, reducing the frequency of replacements and waste generation. Furthermore, steel is a highly recyclable material, and steel coils can be easily recycled at the end of their life, making them a sustainable choice.

Q: What is the diffrent Aluminized steel Type 1. stainless steel 409 430?: Alloy steel is a stainless steel. The differences between the two are the composition of the metal. Alloy steel is steel with usually less than 5% of other elements, like molybdenum, copper, chrome while stainless steel is a steel with at least 10-11% of chromium.

Q: What are the different types of steel coil surface defects?: During the manufacturing or handling process, various steel coil surface defects may arise. Some commonly encountered types are as follows: 1. Rust: When moisture or oxygen comes in contact with the steel coil, rust, a reddish-brown discoloration, may develop on its surface. 2. Scratches: While the steel coil is being handled or transported, superficial marks known as scratches can be incurred. These marks can vary in depth and severity, ranging from light surface scratches to deep gouges. 3. Stains: Exposure to chemicals or other substances can lead to stains, discolored patches that appear on the coil's surface. Removing them may prove to be challenging. 4. Roll marks: During the rolling process, impressions or indentations called roll marks may form. Uneven pressure or misalignment of the rolls causes them, resulting in lines or patterns on the coil's surface. 5. Edge wave: Imperfectly flat edges of the coil can result in a defect known as edge wave. This defect causes the edges to appear wavy or uneven and can impact the coil's overall appearance and performance. 6. Oil spots: If the oil or lubricants utilized in the manufacturing process are not adequately removed, surface defects called oil spots can manifest. These spots appear as dark patches or spots on the coil's surface and may hinder the adhesion of coatings or paints. 7. Pitting: Small, shallow depressions or pits on the coil's surface are indicative of a defect called pitting. Factors like corrosion, uneven cooling, or impurities in the steel can cause this defect. 8. Holes: Holes are severe surface defects that can arise due to various factors, including corrosion, mechanical damage, or manufacturing errors. These defects come in different sizes and can significantly compromise the coil's structural integrity. Promptly addressing these surface defects is crucial for maintaining the quality and performance of the steel coil. Regular inspections, proper handling, and appropriate surface treatments can help minimize the occurrence of these defects.

Q: What are the challenges in coil blanking?: Coil blanking, a process used to cut flat metal sheets from coiled stock, presents several challenges that need to be addressed for efficient and accurate production. Some of the key challenges in coil blanking include: 1. Material variations: Coiled stock can have variations in thickness, width, and surface quality. These variations can affect the cutting process and result in inconsistent blanks. Proper material selection and control are crucial to ensure consistent quality and dimensional accuracy. 2. Coil set and crossbow: Coiled stock often has inherent shape imperfections like coil set (longitudinal curvature) and crossbow (transverse curvature). These imperfections can cause alignment issues during the cutting process, leading to misalignment and inaccurate blanks. Specialized equipment and techniques, such as straighteners and leveling systems, are required to minimize these shape imperfections. 3. Coil edge condition: The edges of coiled stock can have burrs, waves, or irregularities, which can affect the quality and precision of the cut blanks. Adequate edge conditioning techniques, such as deburring or edge trimming, need to be employed to ensure clean and straight edges for the final blanks. 4. Slitting and shearing forces: The forces exerted during the coil blanking process can induce stresses and strains in the material, potentially leading to deformation or springback. These factors can result in dimensional variations and affect the overall quality of the finished blanks. Careful consideration of the slitting and shearing forces, along with proper tooling design and machine settings, is necessary to minimize these effects. 5. Scrap and material waste: Coil blanking can generate significant amounts of scrap material, especially during setup and adjustment phases. Managing scrap and minimizing material waste are critical challenges in coil blanking to optimize production efficiency and reduce costs. Efficient nesting algorithms and real-time monitoring systems can help optimize material utilization and minimize waste. 6. Automation and productivity: Coil blanking processes often require high-speed and high-volume production to meet market demands. Implementing automation systems, such as robotic material handling and advanced control systems, can enhance productivity. However, integrating and synchronizing these automation components with the cutting process can be challenging and requires careful planning and system integration expertise. Overall, addressing these challenges in coil blanking requires a combination of proper material selection, advanced equipment, specialized techniques, and efficient process control. By overcoming these challenges, manufacturers can achieve consistent quality, dimensional accuracy, and productivity in coil blanking operations.

Q: I understand that Stainless Steel is a low carbon steel having minimum 10.5% chromium content in it there r 60 different type of stainless steel. Kindly informa) Is this info correct?????b) Which stainless steel can get rusted or can have superficial rust????: Stainless steel is a generic term for a whole range (there are more than 60 types) of Fe-Cr alloys. They all contain some amount of C and some alloys include a good number of other alloying elements. In almost all cases, the materials have corrosion resistance due the Cr atoms that are in solid solution with the Fe matrix. Under corrosive conditions, the Cr forms a thin tight coherent layer of Cr-oxide. This Cr oxide coating prevents further corrosion so long as it is not chemically or physically removed. If the SS has been subject to mechanical abrasion, the corrosion resistance can sometimes be restored by a light exposure to nitric acid which passivates the surface, restoring the Cr-oxide layer. The carbon content is an important factor in corrosion preformance but so is the heat treatment. Under the wrong conditions and in different environments, all SSs can rust. One of the most common corrosion problems is sensitization which occurs in the heat affect zone (HAZ) around welds. If the C content is high enough and the heat is high enough, the Cr atoms in solid solution form Cr-carbides and are no longer available to form a protective Cr-oxide. The corrosion resistance can be restored by appropriate heat treatment.

Q: I made a wood crossbow body but all I need is a bow which I want to be metal. I've used a thin steel sheet that I cut to appropriate size but when it bent with the string strung, it never went to original shape after being shot. I used a slightly thicker and it wouldn't bend at all. Anybody know what thickness and type to use? Any real answers are very appreciated. Thanks.: You are trying to use plain carbon steel which only can be bent a little bit if it is to return to its original shape. You have to use spring steel or high carbon steel that is intended to be bent a lot and still recover to its original shape. Most people making crossbows with metal bows get a piece of steel from a leaf spring of a vehicle and grind it to shape. A steel bow cross bow almost always needs a very strong trigger mechanism and a miniature wench to pull the steel bow string into position. You might be better off making the bow of wood.

Q: What are the different methods of stretch leveling steel coils?: There are several methods of stretch leveling steel coils, including roller leveling, tension leveling, and temper rolling.

Q: my friend needs sensitive ears....she wants to borrow mine but it says surgical steel,what does that mean?: It means they are hypoallergenic.

Q: i want to know what is light gauge steel and the diffrences between light gauge steel and steel for roof truss.: as a welder i can answere this. wel i think i can after 2 years of classes. so...light guage steel usually referes to the THICKNESS of the metal. also known as SHEET METAL. the only diffrences between light guage and roof truss is that a truss will be thicker metal ex- an i-beam for a structure is usually 1/2inch or 3/8 for smaller buildings. also there is no such thing as light weight steel. steel is steel the only thing that determins its weight is its size/thickness aluminum is a whole nother ballgame. ever see a pound of aluminum vs. a pound of steel? aluminum can be 1/2 or less the weight of steel. but its tensile strength suffers EX. say steel will snap at 70,000 pounds, aluminum will snap at 40,000 pounds, if it even snaps that is! it just tends to bend like rubber. aluminum is handy for many things because it will not rust.

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