sch40 iron steel pipe galvanized steel pipe tube
Galvanized Steel (Schedule 40) Pipe Fittings | McMasterCarrMade of galvanized steel, this Schedule 40 pipe has fair corrosion resistance and is designed for lowpressure applications. Welded pipe has a weld bead on the inside. Seamless pipe has a smooth interior for unrestricted flow and is stronger than welded pipe. Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.