Is taken with regards to the various type of heat treatments, which are fundamental to ensure the correct mechanical and structural characteristics of the material itself.
Heat treatment charts are available for Client review.

Normally carbon and alloy materials are supplied in shot blasted condition and coated by our standard black primer that gives an excellent protection even in outdoor conditions and it's not necessary to remove it prior to welding on line.

Stainless steel fittings undergo pickling/passivation and supplied bare. Surface discontinuity, if any, are removed by grinding and the high grade of finishing of our fittings is a constant characteristic that distinguishes us among the other manufacturers and putts PETROL RACCORD one step ahead.