Product Description A 45 degree elbow is a pipe fitting that is used to change the direction of a pipe by 45 degrees. It is typically made of steel, stainless steel, or plastic, and can be threaded, welded, or socket-welded to the ends of the pipes. 45 degree elbows are commonly used in plumbing, HVAC, and other piping applications. Technical Specifications The technical specifications of a 45 degree elbow will vary depending on the material, size, and type of fitting. However, some common specifications include: Inside diameter (ID): The ID is the diameter of the pipe that the elbow will fit. Outside diameter (OD): The OD is the outer diameter of the elbow. Radius: The radius is the distance from the center of the elbow to the inside of the bend. Wall thickness: The wall thickness is the thickness of the elbow. Type: There are two main types of 45 degree elbows: long radius (LR) and short radius (SR). LR elbows have a longer radius than SR elbows, which makes them more flexible and easier to install. Material: The most common materials for 45 degree elbows are steel, stainless steel, and plastic. Steel elbows are the most durable, but they are also the heaviest. Stainless steel elbows are corrosion-resistant, but they are more expensive than steel elbows. Plastic elbows are the lightest and least expensive, but they are not as durable as steel or stainless steel elbows. Applications 45 degree elbows are used in a variety of applications, including: Plumbing: 45 degree elbows are used in plumbing systems to change the direction of pipes. They are commonly used in bathtubs, showers, toilets, and sinks. HVAC: 45 degree elbows are used in HVAC systems to change the direction of air ducts. They are commonly used in furnaces, air conditioners, and heat pumps. Process piping: 45 degree elbows are used in process piping systems to change the direction of fluids. They are commonly used in chemical plants, oil refineries, and power plants. Other applications: 45 degree elbows can also be used in other applications, such as irrigation systems, fire sprinkler systems, and swimming pool systems.