Thermatool Seam Annealing / Normalising systems are highly efficient and offer tube and pipe producers proven reliability. To provide rigorous quality control and to ensure process repeatability, both essential requiremen......Thermatool Seam Annealing / Normalising systems are highly efficient and offer tube and pipe producers proven reliability. To provide rigorous quality control and to ensure process repeatability, both essential requirements for API Certification, Thermatool seam annealing systems provide continuous temperature monitoring. This is required by all API pipe producers to provide evidence that critical process temperatures have been reached during each shift.