This Anvil nipple is a schedule 40 steel pipe fitting with a black finish and male National Pipe Taper (NPT) threads on both ends for joining two pipes or extending pipe length. It has NPT threads for creating a tighter seal than straight threads. This fitting is made of steel and has a black finish to provide greater rust resistance than iron and can be used for oil and gas applications. This schedule 40 nipple meets specifications ASTM A53 and ASME B 1.20.1 for quality assurance.Pipe fittings are components used for connecting, terminating, controlling flow, and changing the direction of piping in many different industries. When purchasing pipe fittings, consider the application, as this will affect material type, shape, size and required durability. Fittings are available threaded or unthreaded, in many shapes, styles, sizes, and schedules (pipe wall thickness).Anvil International provides pipe products and design services. The company, founded in 1850 and headquartered in Portsmouth, NH, meets International Organization for Standardization (ISO) 9001:2000 standards and is certified by the American Petroleum Institute (API). Its fittings meet American Society for Testing and Materials (ASTM) and American Society of Mechanical Engineers (ASME) specifications.