Pipes and fittings installed

by:XEX     2021-01-08
Drain operation process 3. 1 process: prepare to prefabrication, installation installed bracket - main installation - riser to branch pipe installation, sealing plug hole - closed water test. 3. 2 cast iron drainage pipe installation. 2. 1 main installation: plumbing installation. 3. 2. 1. 1 in the dug pipe groove formed backfill to bottom elevation in pipelines, should be preformed section according to the direction, bearing his mouth water from the outlet to the indoor order. Dig good twist grey cast pit with work, will be preformed section slowly into the trench, closed plugging strict total outlet, completes the temporary support, according to the coordinates and elevation of the construction drawings to find a good position and slope, and the centerline of the direction of the nozzle and reserved connected the pipe socket. 3. 2. 1. 2 before twisting grey cast within the pipeline, pipe straightening, looking for is first, twist with ma qian or thin chisel socket gap to find all well, beat hemp, alignment, calibration, pipeline on both sides of the earth properly, to prevent twisting grey cast pipe when the shift. 3. 2. 1. 3 will water cement ratio of 1:9 twisted mouth ash cement mix well after installed at the bottom of the ash disc on the socket, people across the twisted fill grey hand carved in the line puddling, full with a hammer, after again fill again to play, will play with grey cast a draw. 3. 2. 1. 4 twist good grey cast, with wet hemp rope wrapped maintenance or backfill wet fine soil cover maintenance. 3. 2. 1. 5 pipeline system after the acceptance of the hidden, temporary plugging the reserved nozzle, cooperate with construction in holes, in accordance with the provisions, backfill soil.
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