The construction industry comprises four sectors: building construction, civil engineering construction, construction installation, and building decoration and finishing. Building construction includes the construction of various residential buildings, public venues, office buildings, shopping malls, factory plants, and other building facilities. Civil engineering construction involves railway, road, tunnel, and bridge engineering; municipal public utility construction; and the building of water conservancy, water transport, and port infrastructure. Construction installation refers to the installation of various equipment within buildings after the completion of the main structural works, as well as the laying of electrical lines and piping during construction. Building decoration and finishing encompasses the decoration, renovation, maintenance, and cleaning activities in the later stages of construction projects, as well as interior decoration of residential spaces. Unlike manufacturing activities conducted inside workshop plants, construction production often takes place outdoors in the open field, where conditions are relatively harsh. The surrounding environment has a significant impact on welding, making it difficult to ensure consistent welding quality. Messer's Ferroline® (梅钢保®) series of cylinder gases can help construction workers achieve stable welding quality, contributing to building safety.
