All types of wear and tear issues are common in the petrochemical industry, including problems caused by high temperatures, aggressive compounds and hard particles. Many surface treatments cannot deal effectively with the challenges posed by various combinations of such issues, such as cracking and fracturing caused by temperature shocks. In contrast, diffusion-based treatment processes such as aluminizing, inchromizing and hard inchromizing can often provide a highly (cost-) effective solution for such problems.