国产精品久久观看,一区二区三区免费在线观看,免费观看a级毛片,成人午夜兔费观看网站

Add to favorites|Contact us|Sitemap|中文版

Welcome to Hengshui Qijia Engineering Materials Co., Ltd!
Advisory hotline0318-5105289

Corrugated pipe culvert

The current position:Home > faq

corrugated steel culvert main material

Time:2015-09-02 16:04
  The main material of corrugated steel culvert:
  1, the tube body: think appropriate and use of Q235A hot rolled steel manufacturing, steel flex strength shall not be less than 235MPa, the tensile strength shall not be less than 375MPa.
  2, side wall, side wall foundation, cap stone: C30 cement.
  3, birthday horoscopes wall foundation: C25 cement.
  4, the wing wall: C30 small stones cement rubble.
  5, entrance paving, cut-off wall: C30 small stones cement rubble.
  6, the wing wall plastering: C30 small stones cement.
  In 7, Kataishi strength: stone strength grade of not less than MU30.
  The above internal substantial meaning are according to meet students substantive problems in to clean up, for reference, if has the question please communicate, as early as possible.