1, winter corrugated metal culvert construction measures: welding temperature should not be lower than -20 DEG C, and should be taken to prevent snow, wind and other measures to reduce the welding temperature difference. The welded joints are not immediately exposed to ice and snow.
2, non corrugated metal culvert construction measures: to strengthen the corrugated metal culvert cover, to prevent corrosion. Metal corrugated culvert connection, should set up a temporary anti canopy, prevent the rain.
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