Ductile iron pipe installation requirements

by:XEX     2021-02-02
1 groove excavation trench bottom width should press type meter: B = + 2 (D1 b1+b2) Type: B - Pipe trench excavation width (at the bottom of the mm) D1— The outside part of the pipeline structure width ( mm) b1— The face width (on one side of the pipe mm) b2— On one side of the pipe support width ( mm) 2 trench according to the groove of the soil, groundwater, grooving section, factors such as the design load condition, the request is firm and reliable, to prevent landslides, stable support shall not interfere with the pipe and tube. 3 T interface pipe in a vertical or horizontal bend should set piers. Should be based on factors such as diameter, Angle, working pressure through the calculate and determine the size of piers 4 conveying drinking water, pipeline area should not be through the toxicants, such as must be through the protective measures should be taken. 5 every socket connection of ductile iron pipes, must through the calculation of piers, see national building standard design atlas 03 ss505 flexible interface water supply pipeline piers. 6 nodular cast iron pipe anticorrosion coating should depending on soil conditions to select the galvanized pipe and epoxy asphalt coating or higher requirements of the coating. 7 after pipe installation, testing qualified, appropriate USES low chlorine ionized water flushing and 0. 03% potassium permanganate solution.
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