• <video id="eikll"><del id="eikll"></del></video>

  • <del id="eikll"></del>
    <del id="eikll"></del>
    <th id="eikll"><progress id="eikll"></progress></th>

    ML37Cr

    ML37Cr
    ML37Cr鋼板化學(xué)成分%:
    碳 C :0.32~0.45
    硅 Si:0.80~1.20
    錳 Mn:0.20~0.50
    硫 S :≤0.030
    磷 P :≤0.030
    鉻 Cr:4.75~5.50
    鎳 Ni:允許殘余含量≤0.25
    銅 Cu:允許殘余含量≤0.30
    釩 V :0.80~1.20
    鉬 Mo:1.10~1.75
    日日噜噜夜夜狠狠久久无码区,成在线人AV无码高潮喷水,2020亚洲国产精品无码剧情,最新无码国产在线播放
  • <video id="eikll"><del id="eikll"></del></video>

  • <del id="eikll"></del>
    <del id="eikll"></del>
    <th id="eikll"><progress id="eikll"></progress></th>