Carbon Steel, Welded and Seamless. Brass, Red and Bronze. Stainless Steel, 304 and 316. Nipples, Fittings, Pipe. Threaded and Socket Weld. Imported and Domestic. Pipe, CW and ERW, A-106 Seamless, A-135 Sprinkler. 1/8" thru 12" diameters. Pipe Nipple Manufacturer with the ability to cut and thread special end finishes. BSPT, NPT, NPSM threading.