This design minimizes galling tendency with non-hardened stainless steel seats and is less likely to stick in the body seat.

 
  • 這種結構將未硬化不銹鋼閥座的磨損可能性降到最小程度,也降低了卡在閥體閥座上的可能性。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan