Oil & Gas
Sour-service grades for upstream, midstream and gas-processing equipment, quoted against MR0175 / ISO 15156 where it applies.
INDUSTRIES
The grade follows the service.
The same nine or ten grades cover most of these industries. What changes between them is the acceptance basis — which test, at which temperature, to which class.
Application areas
Refining & Petrochemical
Corrosion- and temperature-resistant grades for process equipment and turnaround requirements, against MR0103 / ISO 17945 on the refinery side.
Power Generation
Elevated-temperature grades — 625 in both delivery conditions, 718 in the solution route the specification names.
Chemical Processing
Grade selection for aggressive media, where PREN alone does not settle it and CPT/CCT data has to come with it.
Rotating Equipment
Bar, forgings and blanks for shafts, impellers and rotor parts — where fatigue life and transverse properties in heavy sections decide the heat-treatment route.
Pulp & Paper
Bleach-plant and chlorine-dioxide duty, where titanium and the 6Mo grades do work that stainless does not survive — and where the crevice temperature, not the general corrosion rate, sets the limit.
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