国产69精品久久,国产91一区二区三区传媒,91亚洲国产成人久久精品麻豆,亚洲精品乱码久久久,日本一区二区三区,蜜穴视频app下载,天天躁狠狠躁夜夜躁,狠狠色婷婷丁香五月

CN
CN
  • SBTHF?-Ⅴ Grouting Material for Post-tensioned Pre-stressed Concrete Structure
    SBTHF?-Ⅴ Grouting Material for Post-tensioned Pre-stressed Concrete Structure Download

    1565655330711944QZNO.jpg

    SBTHF? -V is an amalgamation of cement, low-alkali, high-expansion material and functional polymers.The grout possesses multiple properties with long workable time, no bleeding, and mild expansion. It is suited for the preparation of post-tensioning duct grouts applied in expressway and large bridge projects.