The threaded joint refers to the pipe connector with thread, is the most common kind of pipe fittings in industry and life, the threaded joint makes the connection of the pipe more simple, disassembly and replacement is also easier, greatly saving the cost of pipe connection.
Industrial thread joint is generally made of metal, high pressure resistance, materials are carbon steel, stainless steel, alloy steel, brass, etc.
Black pipe nipple is made of carbon steel pipe, and face is black, thread standard is ASTM