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23/12/2025

Hengyang Steel's Seamless Steel Pipes Enable Major Breakthrough in National Clean Power Generation Technology

Hengyang Iron & Steel supplied high-performance seamless steel pipes for the world's first batch of 660-megawatt ultra-supercritical circulating fluidized bed boilers, contributing to a major breakthrough in China's clean power generation technology.

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18/12/2025

Henan Iron and Steel Group's Zhoukou Base Successfully Rolls 460mm Extra-Thick Slab

Henan Iron and Steel Group's Zhoukou Base has successfully produced 460-millimeter ultra-thick slabs, achieving a major breakthrough in the full-process technology for ultra-thick slabs. This advancement significantly enhances the Group's competitiveness in the steel sector for heavy equipment manufacturing.

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17/12/2025

Bao Gang United Steel Achieves New Breakthrough in High-Grade Non-Oriented Silicon Steel Smelting Technology

Recently, Bao Gang United Steel's Rare Earth Steel Plate Plant achieved continuous casting production of two high-grade, top-tier non-oriented silicon steel products for the first time.

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16/12/2025

In the first 11 months of 2025, China's steel output reached 1,332.77 million tons, a year-on-year increase of 4 percentage points.

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15/12/2025

After a 16-year Hiatus, China has Once Again Implemented Export Licensing for Steel

On December 12, 2025, the Ministry of Commerce and the General Administration of Customs jointly issued Announcement No. 79, deciding to implement export license management for certain steel products starting from January 1, 2026.

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12/12/2025

Jingye Yingkou Medium Plate Successfully Produced Ultra-Wide Steel Plates

Recently, Jingye Yingkou Medium Plate successfully developed and produced an ultra-wide steel plate with specifications of 19mm×4700mm×12170mm, precisely meeting the customized needs of customers.

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12/12/2025

Wusteel's high-end, extra-thick nuclear power steel contributes to the construction of China's fourth-generation nuclear energy system.

Wusteel Company has successfully developed a 340 mm thick nuclear power steel plate and applied it to the key shielding layer of China's fourth-generation thorium-based molten salt experimental reactor, demonstrating its breakthrough in the field of high-end nuclear power materials and its strategic supporting role in national energy security.

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Answers

Why do aluminum alloys require surface oxidation treatment?
The surface oxide film on aluminum alloys can:
a. Provide corrosion protection: The dense oxide film formed on the surface of aluminum alloys prevents corrosion from oxides in the atmosphere, thus extending their service life.
b. Improve wear resistance: The high hardness of the oxide film improves the wear resistance and corrosion resistance of the aluminum alloy.
c. Enhance appearance: The oxide film of different colors formed on the surface of aluminum alloys after oxidation treatment enhances their decorative and aesthetic appeal.
d. Ensure color stability: The color of the oxide film on the surface of aluminum alloys is stable and does not easily change due to sun and rain exposure.
Do y have GOST 8732-75 standard, grade 20 steel, 32x3 gauge, 70 tons, FOB delivery?
To provide you with accurate confirmation and a formal quote, we need to discuss several key details with you: We need to confirm your requirements regarding specific chemical composition, surface condition and processing, as well as transaction and logistics information. You can contact us using this contact information: +86 198 6196 1658. We can provide the standards you require.
Storage and transportation of color-coated steel sheets?
Transportation:
1. During transportation, maintain the original packaging in its factory condition and do not open it arbitrarily.
2. Keep the inside of the transport vehicle clean and use rubber mats to prevent dents or damage to the packaging.
3. The coils should be securely fastened to prevent damage or accidents caused by movement or rolling during transportation.
4. Do not drag the color steel sheets; otherwise, burrs will cause surface scratches.
5. Clamp the steel coils on both sides with wooden pads, or secure them to the vehicle with chains or wire.
6. Use anti-slip materials such as sheet metal or straw mats inside the truck bed. Steel straps (height greater than 2.5 times width) must be bundled into two bundles.
7. Use suction cups or soft slings during handling to avoid direct contact between the steel wire ropes and the sheet surface.

Loading and Unloading:
1. Use anti-slip materials inside the truck bed according to the weight of the steel coils; load horizontally, spreading evenly inside the truck from the rear to the middle.
2. Use rubber mats between the lifting equipment and the product to prevent collisions.
3. Do not stack.


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