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12/01 17:13
< On January 12, the price of bearing steel round bars in Wuxi did not fluctuate significantly. GCr15 (AISI 52100) Nangang φ40-180 (hot rolled) 584.66, up 1.43. (USD/ton)
12/01 17:11
< On January 12, the price of cold-rolled stainless steel sheet in Foshan did not fluctuate significantly. 430/BA Yongjin 0.45*1219*2438mm 12.18, up 0.29. (USD/sheet)
12/01 17:10
< On January 12, the price of 300 series cold-rolled stainless steel coil in Foshan saw a significant increase. 304/2B TISCO 1.2*1219*C (slit edge) 2077.85, up 57.32; 316L/2B TISCO 0.5*1219*C (slit edge) 3768.79, up 71.65. (USD/ton)
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12/01 17:09
< On January 12, the price of PC strand wire in Guangzhou remained stable. 30MnSi Jiujiang Φ8-12 (hot rolling, prestressed) 494.39. (USD/ton)
12/01 17:08
< On January 12, the price of stainless steel round bars in Xinghua fell slightly. 321 Xinghuada Φ16mm, 2221.15, down 42.99 (USD/ton)
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12/01 17:08
< On January 12, the price of scaffolding steel pipe in Tianjin rose slightly.20# (ASTM 1020) YIZHOUDA 38*500(Base Jack) 726.53, up 1.43. (USD/ton).
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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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