1. If it is a bridge, install the bridge according to the specifications. 2. Whether the pipeline is set according to the usage specification: the installation quota of process pipeline or water supply and drainage or automation instrument. Pipeline installation is a new technology cited by all mechanical and electrical equipment. Pipeline installation includes general data, pipelines, pipe fittings, flanges, basic operation technology of pipeline installation, pipeline connection, bracket and compensator installation, valves, building water supply and drainage pipeline installation, heating system installation, pipeline pressure test and cleaning, common industrial pipeline installation, non-ferrous metal pipeline and stainless steel pipeline installation, common non-metallic pipeline and anti-corrosion lining pipeline installation, instrument pipeline installation and pipeline anti-corrosion and heat preservation.