Check the listing for details. 3" x 4" Galvanized Steel Pipe Nipple Schedule 40 Threaded On Both Ends. Condition: New. Listed at 26.96 USD. This 3" x 4" galvanized steel pipe nipple is a high-quality fitting for your plumbing needs. With a schedule 40 threaded on both ends, this nipple is perfect for connecting pipes and maintaining a reliable water flow. The stainless steel material ensures durability and longevity, while the 4-inch length and 76.2-mm diameter provide a comfortable fit for most pipes. This nipple is ideal for use in various plumbing applications, including industrial and commercial settings. Its precise design and construction make it a top choice for professionals who need to ensure optimal performance and durability. Whether you're a plumber or an engineer, this 3" x 4" galvanized steel pipe nipple is an essential component for your plumbing system.