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Nyeste standarder

  • ASTM A964/A964M - 23

    Standard Specification for Corrugated Steel Box Culverts


  • ASTM C1577 - 20e1

    Standard Specification for Precast Reinforced Concrete Monolithic Box Sections for Culverts, Storm Drains, and Sewers Designed According to AASHTO LRFD


  • ASTM C1618 - 19

    Standard Test Method for Concrete Sanitary Sewer Pipe by Negative (Vacuum) Air Pressure


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