Metal Chemical Cleaning Services

Delstar provides a variety a chemical metal cleaning services to fit your needs. Whether you need a simple degreasing or critical cleaning for oxygen service, Delstar can get the job done. The most common cleaning and degreasing applications are internal flushing and cleaning of vessels and heat exchangers. This can be done by tank dipping methods or by re-circulating methods using alkaline cleaners, solvent degreasers or detergents.

A common “non-critical” procedure would be to thoroughly clean the parts by re-circulating hot water and detergent. Parts that contain higher concentrations of hydrocarbons and grease will, most likely, require solvent cleaning. Certain jobs are required to be thoroughly dried following cleaning. In these cases, we will typically circulate isopropyl alcohol through the part followed by a thorough nitrogen purge.

Other, more critical jobs might even require the dryness of the part to be verified dry to a certain dew point level (i.e. -40°F). In these cases, we will have the dryness verified by an independent outside party. Finally, certain jobs will require that the part be shipped with a nitrogen blanket. In these cases, gauges will be installed to verify that the part has the proper blanket when it leaves our facility.

Delstar can handle most any chemical cleaning project that you might have in our facility or on-site at your facility.

Chemical Metal Cleaning Specifications in use at Delstar:

• ASTM A 380-99, Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment and Systems
• ASTM A 967-01, Chemical Passivation Treatments for Stainless Steel Parts
• ASTM G93-96, Standard Practice for Cleaning Methods and Cleanliness Levels for Material and Equipment Used in Oxygen-Enriched Environments

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