ERW Longitudinal – Continuous Line
Based on rolled steel coils, the process includes:

	Slitter
	Steel uncoiling operations
	Steel Accumulator
	Pipe Forming
	Automatic Electrical Resistance Welding by HFI (High Frequency Induction) and HFC (High Frequency Contact)
	Seam annealing
	Calibration
	Beveling, dimensional and laboratory cutting for testing
	Hydro Test
	Non-destructive testing
	Finishing area – Threading and Heat Treatment

SAW Longitudinal (U-O-E)       
Based on steel plates, this process includes:

	“U” and “O” pressing
	Automatic internal and external submerged arc welding
	Cold expansion
	Hydrostatic tests
	Dimensional tests
	Laboratory tests

SAW Spiral – Continuous Spiral
Based on rolled steel coils, this process includes:

	Pipe formation via continuous spiral process
	Automatic submerged arc welding
	Hydrostatic tests
	Non-destructive tests
	Dimensional tests
	Laboratory tests