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Cool Mill 60
After digging a well and to prevent it from falling (falling of the surrounding soil and the body into the well), a piece called Kol is used.\r\nAt present, the cols that are used in the construction of wells are mainly made of cement and in some cases made of polyethylene.\r\nCement concrete\r\nThe basic materials for the production of this type of coal are cement and sand.\r\nTo strengthen the cement (concrete) core, metal bars or belts are used inside it.\r\nThese kols (cement kols-concrete kols) are mainly divided into rod and storage kols.\r\nThe rod type (col rod) is cylindrical in shape ...
