The nipple is a short pipe stub with a male pipe thread at each end or at one end. It is used for connecting two other fittings. Nipples are used for connecting pipes, hoses, and valves. Pipe nipples are used in low-pressure piping. Standard : ASME B16.9, ASME B16.11 etc. Material :20#, A105, 15CrMo, 304, 304L, 316, 316L, etc. Diameter: DN6-DN100. Pressure: 3000LB, 6000LB.