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

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

    10SPb20

    10SPb20
    材料號(hào):1.0722牌號(hào):10SPb20
    標(biāo)準(zhǔn):EN 10277 - 3 : 2008 ●特性及應(yīng)用:10SPb20材料,德國(guó)牌號(hào)特種鋼?!窕瘜W(xué)成分:碳 C:0.07-0.13硅 Si:≤0.4錳 Mn:0.7 - 1.1磷 P:≤0.06硫 S:0.15 - 0.25
    鉛 Pb:0.2 - 0.35
    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>