Stainless Steel Pipe Nipple Stainless Steel Thread End Barrel Nipple nipples are longer than a close nipple and include a very short unthreaded space between the threads. The unthreaded space is not large enough to fit a pipe wrench. When two female fittings are screwed onto either end, a small piece of the nipple will remain exposed. A shoulder nipple is the first length of the nipple that is available up from a close nipple. Material:ASTM A312(TP304/TP304L/TP316/TP316L) Size:⅛"~4'' Thread Type:PT、BSP Surface Treatment:Polish、Pickling Type: Elbow 90°, Elbow 45°, Street Elbow, Tee, Socket Banded, Full Coupling OD Machined, Half Coupling; Hexagon Nipple, Cross, Union Conical F/F, Union F/M, Union M/M, Hexagon Bushing, Round Cap, Hexagon Cap, Square Plug, Hexagon Plug, Hexagon Nut, Reducing Nipple, Hose Nipple, Reducing Socket Banded, Welding Nipple, Barrel Nipple Size: 1/8''-4'' Thre…