The long-term use of the air storage tank or after many years of use will inevitably cause rain, air or humid atmospheric corrosion, which is caused by the action of water, oxygen, acidic pollutants and other substances in the atmosphere. It is a common atmospheric corrosion phenomenon that steel rusts in the atmospheric natural environment. The selection of filler metal for aluminum alloy pipeline is not only dependent on the composition of the base metal, but also related to the geometry of the joint, the corrosion resistance requirements in operation and the appearance requirements of the welded parts.

Concealed pipe installation shall be subject to concealed acceptance. The flatness of pipe trench, pipe support, casing installation and anti expansion measures shall be emphatically inspected, and the hydrostatic test and water passing capacity inspection shall be conducted. Check the water passing capacity of the water supply system, and check whether the number of water distribution points opened at the same time according to the design requirements have reached the rated flow; The aluminum alloy pipe is a metal tubular material that is made of pure aluminum or aluminum alloy by extrusion processing and is hollow along its longitudinal full length.

There may be one or more closed through holes with uniform wall thickness and cross section. This is the aluminum alloy fast pipeline used in the field of gas transmission. It has been widely used in high acid and alkali chemical product transmission system, pure water transmission system, drinking water transmission system, sewage and wastewater transmission system, environmental engineering, general pipeline system, telecommunication optical cable transmission and distribution pipeline system, etc.