Selected Answers

From Ahmed Abd Ellatif of MOPCO on June 10, 2013:
Stainless should be painted to protect it from cor ...read more Stainless should be painted to protect it from corrosion in the following conditions: zinc attack (LNG process), and exposure to chlorides with high humidity near coastal areas.

From Aldrin Cordovez of Kuwait Oil Company on April 11, 2011:
     Stainless steel shall be ...read more      Stainless steel shall be coated when it is exposed to soil under buried conditions, also when exposed to marine environment,connected to or in contact with metals of different potentials. It is also coated for warning and identification purposes.

From Guru Sankar of Sathya Hitec Solutions on April 8, 2011:
     Stainless steel coating i ...read more      Stainless steel coating is compulsory when the surface is exposed to corrosive atmospheres of sulphide, fluoride, chloride or marine atmosphere conditions. Stainless steel also needs to be coated when in direct contact with cupronickel, brass, bronze or other noble alloys of metals.

From Jose Avendano of KTA-Tator, Inc. on April 6, 2011:
     Stainless steel can also ...read more      Stainless steel can also be painted for identification purposes, signaling, and safety.

From R.K. Singh of Chemdale Coatings Pvt Ltd on April 6, 2011:
     It can be painted to prov ...read more      It can be painted to provide cathodic protection of stainless steel pipe simply with a coat of zinc-rich epoxy primer.

From Bill Jordan of MTM Metalizing on April 5, 2011:
      Thermally sprayed A ...read more       Thermally sprayed Aluminum (TSA)  is often applied over stainless steel when stress corrosion cracking is a concern, especially at temperatures above ambient.

From Victor Nouel of Enosa on April 4, 2011:
     Buried stainless ste ...read more      Buried stainless steel pipes should be coated (tape or paint) when they're electrically continuous with carbon steel and in the same pipeline corridor, not to protect the stainless steel  but to decrease the bare surface of the stainless steel that would act as a cathode in relation to the carbon steel pipes. Recommendations are not for a sophisticated coating but any normal coating for buried pipe or normal tape.

From Maher Saud Khashram of Saudi Aramco on April 2, 2011:
-Painting is mandatory if it is to be insulated, r ...read more -Painting is mandatory if it is to be insulated, regardless the process temperature. Otherwise, painting is optional, depending on cost and risk ranks for bare stainless steel piping/equipment in offshore and marine environment opertaing near 50-60 C.