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14/01 17:49
< On January 14, the price of seamless stainless steel pipe in Hangzhou saw a slight decrease. 316L Zhengye Φ57*3mm: 4499.62, down 71.65 (USD/ton)
14/01 17:48
< On January 14, the price of 300 series hot-rolled stainless steel coil in Wuxi saw a significant increase. 310S/NO.1 TISCO 5.0*1520*C (mill edge) 4728.90, up 279.44. (USD/ton)
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14/01 17:45
< On January 14, the price of hard steel wire in Zhengzhou remained stable. 45-55# (ASTM 1045-1055) Ansteel Φ7.5 (hot rolling) 481.49 (USD/ton)
14/01 17:30
< On January 14, the price of stainless steel channel in Wenzhou remained stable with a slight decrease. 304 Qingshan 10# (100*48*5.3)mm 2006.20; 316L Qingshan 14a# (140*58*6.0)mm 3654.15, down 71.65. (USD/ton)
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14/01 17:27
< On January 14, the price of steel welding wire in Changzhou did not fluctuate significantly. H08A (AWS EL8) ZHONGTIAN Φ6.5(Hot Rolling)513.01, up 2.87. (USD/ton)
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14/01 17:22
< On January 14, the price of 200 series cold-rolled stainless steel coil rose slightly in Foshan. 201 J1/2B Hongwang 0.8*1240*C (mill edge) 1203.72, up 7.17. (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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