After the pipe fitting is complete we need to conduct land right to take advantage of the work of the bucket. The layer of sand cushion in the bottom of the pipe to ensure 30 cm thick, is compacted. Then pour the sand turn down into each layer with a thickness of no more than 30 cm and must also be thoroughly compacted. Finally filled up cobblestone road surface coating and pay (if the pipe goes through).Try pressure testing work was conducted after the buried pipe finishing
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