Choosing the right steel pipe for infrastructure projects or industrial applications requires balancing material properties, environmental conditions, and compliance standards. API 5L line pipes, for example, are critical for oil and gas transportation due to their high tensile strength and resistance to extreme pressures. Meanwhile, galvanized steel pipes offer enhanced corrosion protection for water supply systems or outdoor installations. Carbon steel pipes, though cost-effective, need evaluation of their weldability and susceptibility to rust. This guide explores how to match pipe types like ERW, SMLS, or casing pipes to specific project needs—whether for construction, plumbing, or energy sectors—to avoid premature failures, reduce maintenance costs, and meet safety regulations without compromising performance.