C&N Flow Production of Pipe Spool Fabrication Download C&N has the capacity to produce up to 3500 spools per month, including a combination of large and small bore, and all associated weldments and loose pipe supports shipped. Our experience is extensive and we have the skills to work with carbon steel, chromium molybdenum, creep resistant steels, stainless steels, duplex steels, nickel based alloys and aluminium as well as jacketed and clad piping systems.