What is the difference between tungsten carbide corrugating roll and traditional corrugated roller? First of all, the hardness of heat treatment is different, and the precision of flute profile before spraying is better, which must be completed on automatic CNC grinding machine. Besides, spraying technology is the key to ensure the hardness of tungsten carbide and the quality of subsequent polishing. Tungsten carbide corrugating rolls are 3-6 times more durable than ordinary corrugating rolls.