Level 1 Construction Engineer Mechanical and Electrical Gold Test Site Pipeline Factory Prefabrication Technology, First Construction Scholar's Notes, Long Press to Like + Retweet + Comment for continuous updates, click on my avatar in Wendang Edition to send me a private message: 2022
(1) Pipeline Factory Prefabrication The advantages and applications of
2. The application of pipeline factory prefabrication technology
is suitable for civil and industrial construction projects, especially suitable for mechanical and electrical pipeline installation projects in medium and large buildings, especially super large and super high-rise civil buildings. With the increasingly mature application of pipeline factory prefabrication technology, more and more engineering constructions will apply this technology, and the prospects are very broad.
(2) Conditions and processes of pipeline factory prefabrication
2. Pipeline factory prefabrication process.
Pipeline factory prefabrication involves building one or several pipe prefabricated assemblies (pipe sections) in a factory or prefabrication yard at the project location or in a different location, and then undergoes pipe section cutting, bevel processing, welding, heat treatment, inspection, marking, cleaning, The pipeline products are manufactured through processes such as painting and protection, and the prefabricated pipe sections are sent to various units or installation areas on site for on-site assembly and welding to form a whole.
(3) Main technical contents of pipeline factory prefabrication
2. Develop the prefabrication process
(1) Develop the flow prefabrication operation process.
determines the prefabrication process according to different connection methods of pipelines. From pipe cutting (mechanical cutting, flame cutting , etc.), pipe processing (threading, rolling groove, bevel, etc.), connection (thread, welding, bonding, etc.), inspection (dimensional retest, pressure test, etc.), Consideration of process conditions such as painting, marking and numbering, and warehousing.
3. Long-distance pipeline construction procedures
Line pile transfer → Measurement and setting out → Cleaning of construction work belts and construction of construction access roads → Pipeline transportation → Pipe trench excavation → Pipe laying → Cleaning of pipe mouths → Assembly and welding → Welding quality inspection and repair → Repair the joints, check for leaks and repair → Hang the pipe into the trench → Backfill the trench → Bury three piles → Cathodic protection → Pressure test and diameter test through ball → Pipe purging and drying → Connector (dead end) → Landform restoration → Hydraulic engineering Protection→Complete acceptance.
