Fittings are fasteners used in piping systems for joining, routing, branching or converting pipes. Critical to the efficient operation and functionality of pipelines, these components come in different sizes, shapes and functions. Different types of fittings include elbows (which direct pipes at an angle), tees (which divide or join pipes in half), reducers (which convert pipe diameters into different sizes) and valves. Fittings play an important role in the design and installation of plumbing systems, and choosing the right fitting is vital for tightness and efficiency.

Plastic pipes and fittings are essential components of piping systems that are durable, lightweight and resistant to various chemical substances used in many industries and applications. Such pipes and fittings are often preferred for the transportation of water, chemicals, gases or other fluids. The advantages of plastic pipes and fittings include corrosion resistance, low cost, easy installation, light weight and flexibility. Furthermore, plastic materials can be designed to suit different chemical environments, providing great flexibility in meeting a variety of application requirements. Plastic pipes and fittings are also frequently preferred in the shipbuilding industry due to their resistance to seawater, salt water and various chemicals.