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《Details of Highway Culvert Design》
Suitable for new construction and reconstruction or expansion of all grades highways.
The steel corrugated pipe culvert is suitable for the roadbeds which are of low bearing capacity, or has large settlement and deformation.
《Using corrugated steel pipe (board) for highway culvert channel》
Issued by Ministry of Transport in 2010.
Technical specification for highway bridge culvert construction.
Technical specification for highway bridge culvert construction was issued in 2011. Corrugated steel pipe construction technology had been included in it.