cold rolled steel coil for construction roof

cold rolled steel coil for construction roof

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 36 m.t.

Supply Capability:: 30000 m.t./month

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cold rolled steel coil for building roof

Competitive Prepainted Galvanized Steel Coil

Hot Dipped Galvanized Steel Coil/GT00818

Name	steel coil
Grade	SPCC,SPCD ,SPCE, Q235
BASE PLATE	Cold rolled steel sheet, hot dipped zinc coated steel sheet hot dipped A-Z coated steel sheet
EQUIPMENT	Double coating double baking;
CAPACITY	5000Mt/week
SIZE	Thickness 0.2mm—2.0mm
WIDTH	600-1250MM
SUREFACE QUALITY	Ⅰ - advanced finishing surface, Ⅱ - more advanced finishing surface, Ⅲ - ordinary finishing surface
COIL WGT	3Mt - 8Mt
COIL ID	φ508mm,φ610mm

Heat treatment condition	A - annealing, S - annealing + flat, 8 - (1/8) of the hard hard, 2, 4 - (1/4) - hard, 1 (1/2) - hard.

Advantages:

a. Our company produce various specification and models and national standards

of steel coil

b. Using high-quality material and advanced production technology and equipment

for processing

c. Applicable to a humid climate and the harsh corrosive environment

d. Products has been all over the country more than 20 provinces, municipalities and autonomous regions, and have been exported to Europe, North American, the Middle

East, the South East Asia, Africa, Asia,European

Main characteristics :

1.strong corrosion resistance

2.surface quality

3.conducive to deep processing

4.economy and practicality

Packaging & Delivery:

Packaging Detail:

1,Each bare coil to be securely tied with two bands through

the eye of coil (or not) and one circumferential.

2,the contact points of these bands on the coil edge to be

protect with edge protectors.

3,Coil then to be properly wrapped with water proof /resistant paper, it then to be properly and completely metal wrapped.

4,Wooden and iron pallet can be used or as your requirements.

Delivery Detail:

7-30 days

Production Process :

Un-coiler------stitching machine-----barrels-----tension machine-----uncoil-----alkali washing and degreasing-----cleaning----drying----passivation-----drying

----cooling----coil----packing and warehousing

Q:I want to buy a chain that will last a long time and that i can wear ALL the time.What are the disadvantages to stainless steel jewelry?Does it look as good as silver?Is there much diference in apperance?: I okorder /... Go for the stainless steel chain if you like it. It does look different than silver and has a more machine like metallic luster (I think). By the way, good stainless steel chains are often more expensive than silver. So don't let anyone laugh at you.

Q:How are steel coils used in the production of storage shelves?: Steel coils are an essential component in the production of storage shelves. These coils are typically made from carbon steel and undergo a series of processes to shape them into the desired form. The first step in using steel coils for storage shelves is to unroll and flatten the coil. This is done using a machine called a decoiler, which unwinds the coil and feeds it through a series of rollers to flatten the metal. Once the coil is flattened, it is ready for further processing. Next, the flattened steel is cut into specific lengths using a shearing machine or a saw. These cut pieces are then bent and shaped into the appropriate dimensions for the storage shelves. This bending process is typically done using a press brake or a roll former, which applies pressure to the metal to create the desired shape. Once the steel has been shaped into the proper dimensions, it is welded together to form the structure of the storage shelf. This welding process ensures that the shelves are strong and durable, capable of supporting heavy loads. After the welding is complete, the storage shelves may undergo additional processes such as surface treatment or coating to enhance their appearance and protect them from corrosion. These treatments can include processes like powder coating, galvanization, or painting. Overall, steel coils play a crucial role in the production of storage shelves. They provide the raw material from which the shelves are made, and their versatility allows for a wide range of shapes and sizes to be created. The strength and durability of steel make it an ideal choice for storage shelves, ensuring that they can withstand heavy loads and provide long-lasting storage solutions.

Q:Where can I find a discount online for Stainless Steel Magnetic Knife Rack: Hi okorder /

Q:Is 440 steel relatively strong or weak?: Grade 440C is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Its very high carbon content is responsible for these characteristics, which make 440C particularly suited to such applications as ball bearings and valve parts. Grades 440A and 440B are identical except for slightly lower carbon contents (0.60 - 0.75% and 0.75 - 0.95% respectively); these have lower attainable hardnesses but slightly higher corrosion resistances. Although all three versions of this grade are standard grades, in practice 440C is more available than the A or B variants. A free-machining variant 440F (UNS S44020) also exists, with the same high carbon content as 440C. Again this grade is not readily available in Australia. Martensitic stainless steels are optimised for high hardness, and other properties are to some degree compromised. Fabrication must be by methods that allow for poor weldability and usually also allow for a final harden and temper heat treatment. Corrosion resistance is lower than the common austenitic grades, and their useful operating temperature range is limited by their loss of ductility at sub-zero temperatures and loss of strength by over-tempering at elevated temperatures. Key Properties These properties are specified for bar product in ASTM A276. Similar but not necessarily identical properties are specified for other products such as plate and forgings in their respective specifications.

Q:How are steel coils weighed?: Steel coils are usually weighed using industrial scales or weighing machines. These scales are specifically designed to handle the heavy weight of steel coils and provide accurate measurements. The coils are placed on the scale, and the weight is determined based on the pressure exerted on the scale's sensors.

Q:I'm doing a project on stainless steel dining utensils and its a little more difficult than i thought it would be. There are no sites on the web that tells the creator or when it was first used. There's no sites that that i can see of that talk about the history of stainless steel dining utensils, only dining utensils in general. Please help, i can't change my project now ):: The development of 18/10 stainless steel was the brainchild of Harry Brearley who, in 1913, was working on a project to prevent rifle barrels from corroding so much during use. His analysis of the rifle barrels involved having to dissolve them in acid but, by chance, he noticed that steel which had a high chromium content did not dissolve in the acid. He experimented with varying proportions of chromium and finally produced a stainless steel with 12.8% chromium. He moved to Thos Firth Sons in 1914 and commercial production of stainless steel cutlery began. Refinements were necessary because early versions of stainless steel knives were harder to produce and polish, and they would not cut as well as the existing knives.

Q:How are steel coils inspected for thickness?: To ensure their quality and compliance with industry standards, steel coils undergo inspections for thickness using a range of methods. One widely used approach is the utilization of a non-contact laser measurement system. This technique involves directing a laser beam towards the surface of the steel coil and measuring the time it takes for the beam to reflect back. By accurately calculating this time, the thickness of the steel coil can be determined. Another method involves the use of ultrasonic technology. Ultrasonic sensors emit high-frequency sound waves that penetrate the coil. These sound waves bounce back differently depending on the thickness of the steel, enabling the sensors to measure the thickness accurately. In addition, some manufacturers may choose to employ the eddy current testing method. This method involves passing an alternating current through a coil, thereby generating a magnetic field. The thickness of the steel coil affects the impedance of the coil, which can be measured. By analyzing the changes in impedance, the thickness of the steel coil can be evaluated. Furthermore, some companies utilize a mechanical method known as the caliper method. This technique involves physically measuring the thickness of the steel coil by applying pressure to the coil and reading the measurement on a caliper gauge. Regardless of the method utilized, it is essential to inspect steel coils for thickness to ensure they conform to the required specifications and meet the desired performance criteria for various applications.

Q:which elements are alloyed to make stainless steel?A Fe, CB Fe, MnC Fe, NiD Fe, CrE Fe, Cr, Ni: E. Stainless steel is mainly comprised of Cr and Ni. Steel is an alloy composed mainly of iron. On a side note, Carbon is not really in stainless steel and it is only less than .1%

Q:I am currently writing a manuscript, and would like to know whether guns made out of steel, burn or melt when exposed to flames. Thanks.: Yes they melt and rather easily. Guns are made by melting steel and many police departments destroy confiscated guns by melting them.

Q:Are steel coils recyclable?: Yes, steel coils are recyclable. Steel is one of the most commonly recycled materials in the world. Coils made of steel can be easily melted down and used to produce new steel products, making them a valuable resource for recycling.

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