Union Pipe Fittings – Types, Uses & Standards (2025 Guide)

Assortment of union pipe fittings in different sizes and materials including steel, brass, and copper, displayed for industrial and plumbing applications.

Introduction to Union Pipe Fittings A pipe union is a fitting designed to connect two pipes while allowing easy disconnection without cutting or damaging the pipeline. Unlike a coupling, which may require cutting during dismantling, a union can be unscrewed and reassembled. Pipe unions are essential in pipelines that need frequent maintenance, inspection, or replacement. … Read more