The EC series of coilers developed by FB Balzanelli for coiling corrugated (16-200 mm dia.) or smooth (16-63 mm dia.) tubing is prevalently intended for foreign markets. Some 50 units have been sold so far in various parts of the world. A few are used for special applications while most are used to coil corrugated PVC and PE tubes (50%) or smooth PE tubes for drip irrigation (50%). The EC series takes best advantage of the speed of the extrusion line for tubing and is flexible in terms of reel length.