Ductile iron pipe installation considerations

by:XEX     2021-02-03
1, ductile pipe in the course of carriage, due to loading and unloading method, may cause the pipe socket ellipse, below DN400 tube elliptical part can be cut off, use special tools to the whole garden is larger than 500 mm, and then the field of concrete lining repair, cement mortar ingredients ( Weight ratio) Is as follows: 2 3 2 copy of sand, cement, drinking water, 1 additives, fully mixing, cleaning up before repair to revamp float sand and sundry, then the water will be around here soaking; Be careful not to water, repair surface to smooth, covers the keeping in good health; 2, under the first tube groove by the tube socket centerline positioning toward in the direction of flow, according to the elevation of each tube inserted before after a GuanCheng mouth, tubular observe whether jack line is in place, reduce through the gaps in a tube to observe the interface, the minimum clearance shall be not less than 3 to 5 mm, starting from the second branch pipe installed along the pipe shaft axial direction on each side was a 2 t - 8 t taut leading chain, to ensure uniform interface gap, but also can solve meets the design for the slope downwards shift problem. Install straight segment does not allow the up and down or so with Angle, as a result of terrain must deflection Angle, DN1400mm can corner 1 below. More than 5 ~ 3 degrees, DN1600mm ductile pipe biggest borrow Angle should not exceed 1. 5 degrees; 3, installation of pipeline in the serpentine state cannot, if there is a requirement construction adjustment, to keep the line straight state; Guangzhou ductile pipe 4, aprons to store a cool airtight place; 5, pipe trench sand cushion to level off, are not allowed to have a larger local projection has been shipped to pursue good tubes to check whether there is dangling pipe phenomenon; 6, to check whether the pipe backfill shift, including up and down and around;
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