Hot Rolled Black Annealed Coil for Construction

Hot Rolled Black Annealed Coil for Construction

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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Basic Info.

Model NO.:Q195

Surface Treatment:Polished

Certification:SGS

Technique:Hot Rolled

Standard:ASTM, JIS, GB, AISI, BS

Application:Ship Plate

Edge:Slit edge

Steel Grade:Q195,Q235,Q345,Ss400,SPHC, A36, S235jr,S355jr,St37

Coil Weight:50-3000kg

Thickness:3-100mm

Export Markets:Global

Additional Info.

Trademark:XBY

Packing:Stanadrd Sea Worth

Standard:SGS

Product Description

Commodity: Hot rolled steel coil
Material: Q235, Q345, SS400, A36, S235JR, S355JR, S45C, S50C, A572
ST37, ST37-2, ST52 Q195 and etc.
Standard: ASTM A570, ASTM A36, JIS G3101, DIN EN 10025
GB/T09-2006
Surface treatment: polished and oiled

Tickness: 3-100mm
Width: 914-2500mm
Length: Coil
Coil ID: 580mm/610mm
Coil weight: <25MT
Applications: ship building, enginrering construction,mechanical , manufacturing,pavement slab, regular use

Applications	Standard
	GB	JIS	DIN	ASTM	OTHERS
Hot Rolled Mild Steel	Q195	SPHC,D,E		SAE1006-1008
Rolled Steel for General Structures	Q235	SS300 SS400 SS490 SS540	ST37-2ST52-3	A36 DIN USt34-2
Rolled Steel for Welded Structures	Q345	SM400 SM490 SM520	S355JR	A570-40 A573-70 A633-E

Q:How are steel coils inspected for oil or rust residues using chemical analysis?: Steel coils can be inspected for oil or rust residues using chemical analysis techniques. One of the commonly used methods is Fourier transform infrared spectroscopy (FTIR). In this technique, a small sample of the steel coil is taken and subjected to infrared radiation. The infrared spectrum obtained is then analyzed to identify the presence of specific chemical bonds that are characteristic of oil or rust residues. For detecting oil residues, a common approach is to use the peak at around 2920 cm-1 in the FTIR spectrum, which corresponds to the C-H stretching vibration in hydrocarbon chains. If this peak is observed, it indicates the presence of oil residues on the steel coil. To identify rust residues, the FTIR spectrum is analyzed for the presence of characteristic peaks corresponding to iron oxide or hydroxide compounds. For example, the presence of a peak at around 560 cm-1 suggests the presence of iron oxide (FeO) or iron hydroxide (Fe(OH)3). In addition to FTIR analysis, other chemical analysis techniques can also be utilized, such as X-ray fluorescence spectroscopy (XRF) or energy-dispersive X-ray spectroscopy (EDX). These techniques can provide elemental composition information, allowing for the identification of specific elements associated with oil or rust residues, such as carbon or iron. Overall, the chemical analysis of steel coils for oil or rust residues provides a reliable and accurate method to ensure the quality and cleanliness of the coils before further processing or usage.

Q:steel structure: Disadvantages Of Steel

Q:What are the challenges faced in the recycling of steel coils?: The recycling of steel coils presents several challenges that must be overcome. To start, the collection and sorting process poses a significant hurdle. Steel coils are often utilized in large-scale industries and construction projects, making it challenging to gather and transport them for recycling purposes. Moreover, steel coils can become mixed with other materials, such as plastic or wood, further complicating the sorting process. Another obstacle is the size and weight of steel coils. Given that steel is a heavy material, handling and processing large coils can be quite difficult. Specialized equipment and machinery may be necessary to efficiently move and separate the coils, thereby increasing the cost and complexity of the recycling process. Additionally, the recyclability of steel coils can be impacted by varying quality. These coils may contain impurities or contaminants, such as oil or paint, that must be eliminated before recycling. Such impurities can compromise the integrity and quality of the recycled steel, making it less desirable for certain applications. Moreover, the recycling of steel coils demands substantial energy and resources. Melting down the steel requires a significant amount of energy, while the transportation and processing of the coils also consume resources and contribute to carbon emissions. Consequently, the environmental friendliness of the recycling process can be diminished. Lastly, the viability of the recycling industry can be influenced by fluctuating market demand for recycled steel coils. The demand for steel products can vary depending on economic conditions and industry trends, making it challenging for recyclers to find buyers for their recycled coils. This can potentially result in stockpiling or disposal difficulties. In conclusion, while recycling steel coils offers environmental benefits and resource conservation, several challenges must be addressed for its successful implementation. These challenges encompass collection and sorting, handling and processing, quality control, energy and resource consumption, as well as market demand.

Q:I feel really stupid asking this question but i feel like a put metal/steel strings on my classical guitar how do you tell the difference?: The g-string will look and feel thicker than usual, and the strings will look almost like copper.

Q:How are steel coils inspected for flatness variations?: Steel coils are inspected for flatness variations using specialized equipment such as flatness gauges and laser measurement systems. These tools are used to measure the surface profile of the coil, detecting any deviations from the desired flatness tolerance. Additionally, visual inspection and manual measurements by trained professionals are also carried out to ensure accurate assessment of flatness variations in steel coils.

Q:What is the role of steel coils in the production of storage tanks?: Steel coils are used in the production of storage tanks as they provide the necessary material for constructing the tank's outer shell. These coils are shaped and welded together to form the tank's cylindrical structure, ensuring its strength, durability, and ability to withstand the pressure and weight of the stored materials.

Q:How do you prevent damage to steel coils during transportation?: To prevent damage to steel coils during transportation, several measures can be taken: 1. Proper packing and securing: Steel coils should be packed tightly and securely in order to prevent any movement or shifting during transportation. This can be achieved by using appropriate packaging materials such as steel cradles, wooden dunnage, or steel straps to hold the coils in place. 2. Cushioning and padding: Adding cushioning materials such as foam padding, cardboard, or bubble wrap between coils can help absorb shocks and vibrations during transit. This extra layer of protection minimizes the risk of scratches, dents, or other damages caused by contact with other objects or surfaces. 3. Adequate handling and loading: Using proper lifting equipment and techniques is crucial to avoid mishandling and dropping of the steel coils. Forklifts or cranes should be used to lift and load the coils carefully onto transportation vehicles. Additionally, coils should be stacked in a way that distributes weight evenly to maintain stability. 4. Weather protection: Steel coils are susceptible to corrosion, so it is essential to protect them from moisture and adverse weather conditions during transportation. Coils should be covered with waterproof and weather-resistant tarps or shrink wrap to prevent water or moisture from reaching the steel surfaces. 5. Regular inspections: Regularly inspecting the coils before, during, and after transportation is vital to identify any potential damage or issues. This allows for timely intervention to rectify any problems and prevent further damage. 6. Properly trained personnel: Ensuring that personnel involved in handling, loading, and transporting the steel coils are adequately trained is crucial. They should be aware of the proper procedures and techniques to safely handle and transport the coils, minimizing the risk of damage. By implementing these preventative measures, the risk of damage to steel coils during transportation can be significantly reduced, ensuring that the coils reach their destination in optimal condition.

Q:How can the outer diameter and weight of steel coil be converted?: To obtain the outer diameter of the steel coil is calculated according to the density of 7850, according to the density, in general, hot-rolled is 0. 96~0, 98, cold rolled, according to 0. 98~0. Ninety-nine

Q:Is there alloys in low carbon steel or non: Stainless Steels are alloys that are made up of iron and generally contain around 11.5% chromium. For obtaining special properties, nickel, carbon, chromium, and other elements can be added to it. There are four types of Steel : Carbon Steel Alloy Steel Stainless Steel Tool Steel From kitchen utensils to cutlery, sinks to machine drums, as well as microwave oven liners mainly, use Stainless Steel. One can find different types of products such as Stainless Steel Tube Fittings, Pipe Fittings, Flanges, pipes, Tubes, Fasteners, Sheets, Rods, Bars and so forth are used in different industries. List of typical applications of these Stainless Steel products include: Oil and gas equipments Offshore technology Seawater desalination plants Chemical industry Bridges Storage tanks Medical Industry Civil Engineering Pressure vessels, reactor tanks, and heat exchangers Rotors, impellers and shafts Power plants Petrochemical Shipbuilding industry

Q:How are steel coils inspected for defects after rewinding?: Steel coils are inspected for defects after rewinding by using various techniques such as visual inspection, ultrasonic testing, magnetic particle inspection, and eddy current testing. These methods help identify surface irregularities, cracks, or other defects that may have occurred during the rewinding process, ensuring the quality and integrity of the steel coils.

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