To connect steel pipes without leaks, follow these steps: clean pipe ends to remove debris, apply pipe thread sealant or tape, use quality threaded fittings or flanges, ensure precise alignment, and tighten joints to manufacturer specifications. For welded connections, use proper welding procedures and post-weld cleaning. Always inspect for gaps or damage before assembly.

The primary reasons for avoiding leaks in steel pipe connections include ensuring airtight or watertight integrity, maintaining system pressure, and preventing corrosion. Clean pipe ends eliminate surface imperfections that can trap sealant or create weak points. Pipe thread sealant or tape (e.g., Teflon tape) compensates for minor mismatches and provides a barrier against moisture, while properly sized fittings ensure consistent contact. Torque specifications, often provided by the pipe diameter and material (e.g., ASME B1.1 for threads), prevent joint loosening due to vibration or thermal expansion. Welded joints require post-weld NDT (non-destructive testing) to verify fusion quality, as incomplete welds account for 15–20% of pipeline leaks in industrial settings (API 1104, 2020). Data from the American Petroleum Institute shows that 60% of pipeline failures stem from improper installation or maintenance, underscoring the need for adherence to standards like ASME B16.5 for flanges and API 5CT for threaded pipes.漏损预防的关键在于标准化操作和材料兼容性。例如，使用ASTM A194或A234等级的紧固件可提升抗拉强度，而密封剂选择需匹配介质特性（如液压油需耐高温）。根据ISO 9001质量管理体系统计，系统性流程可降低85%的安装错误率。定期维护（如每2年扭矩复测）可将泄漏风险降低70%（SPE Journal, 2021）。