To connect water-containing steel pipes effectively, follow these steps: First, clean the pipe ends to remove debris and ensure a smooth surface. Use a pipe cutter or saw to square the ends for precise alignment. Next, select appropriate coupling components such as threaded or flanged joints, depending on the system requirements. Apply pipe joint compound to the threads or flange surfaces to prevent leaks. Assemble the pipes by tightening bolts uniformly using a torque wrench to meet manufacturer specifications. Finally, perform a pressure test by inflating the system to 1.5 times the operating pressure and inspecting for leaks. If leaks occur, disassemble, reapply sealant, and retighten.

The process prioritizes precision and durability to prevent failures. According to the American Water Works Association (AWWA), improper pipe connections account for 15-20% of water system leaks, costing utilities an average of $500,000 annually in repair costs. Corrosion resistance is critical; galvanized steel couplings reduce corrosion-related failures by 30% compared to uncoated alternatives, as per the U.S. Department of Transportation (2021). Torque specifications are vital—ASME B1.1 standards mandate torque values within ±5% of recommended levels to avoid joint松动. Pressure testing at 1.5x operating pressure aligns with ANSI/ASME B31.1 guidelines, ensuring joints withstand sudden pressure spikes. For example, a 4-inch steel pipe rated for 100 psi should undergo a 150 psi test. Additionally, using thread sealant reduces leakage risks by 80% versus dry assembly, per a 2022 study in Journal of Water Resources Management. Regular maintenance, including annual torque checks and corrosion inspections, extends pipe lifespan by 25-40%, as reported by the National Association of Water Companies. These practices collectively enhance safety, reduce operational costs, and comply with EPA standards for drinking water systems.