The durability of duplex system (with hot dip galvanized coating) is described. The main attention is put on the adhesion between paint coatings and zinc surface. Zinc surface preparation methods before paint application are described taking into account standard's requirements and the results of the own investigations.

Local defects in pipelines were discussed with special attention to corrosion defects. Repairs of such defects were presented in compliance with ISO standard specifications. One type of repair was shown in which a composite coating is applied. Kevlar tape constitutes the structural material of this coating. The repair is preceded by calculations in compliance with ISO standard which are performed by a computer program. Data concerning the type of the defect, structural and material data of the pipeline, material transported by the pipeline and its internal pressure are entered into the program. The program calculates, among other things, the number and length of coating's layers .

The most commonly used technologies for corrosion protection of large-scale steel structures are reviewed in their aspects of environmental friendliness, application difficulties, durability and costs.

A short history of paint coating development from ancient times up to the present is presented. The history of the paint industry since its dawn is presented, including a short review of the emergence and development of binders used in present-day pro-ducts.