Sistemi di rivestimento  Fabbricanti, Commercianti, Fornitori

Since 1931 Walther Trowal has been developing and producing systems for the refinement of surfaces. Initially focusing exclusively on mass finishing – the term “Trowalizing” originated from the company’s cable address “Trommel Walther” – Walther Trowal has continuously expanded its product portfolio.
Over time the company has developed a broad range of machinery and systems for mass finishing, shot blasting and coating of mass produced small components.
With the invention of new systems like, for example, drag finishing and the development of special finishing methods for 3D printed components, the company has proven its innovative capabilities again and again.
Trowal develops and implements complete surface treatment solutions that can be seamlessly integrated into linked production systems existing at the customers. This includes the entire process technology, perfectly adapted to the specific surface finishing requirements of the work pieces: Equipment and the respective consumables always complement each other in a perfect manner.
Each individual work piece and each manufacturing process must meet special technical requirements. That is why the experienced process engineers in our test lab, in close cooperation with the customers, develop the optimal process technology for the finishing task at hand. The result: Work piece surfaces that meet exactly the required specification with short processing times and a high degree of consistent, repeatable results.

Due to the outstanding physical properties, our various coating systems provide a versatile range of use for tanks and vessels. They show ultimate corrosion protection against natural influences and long-term UV-stability for external coating of tanks and steel constructions. As internal coatings for special tanks and process vessels, our products perform high-grade resistance properties at elevated operating temperatures.
 
Our high-performance coatings achieve the complex requirements in the range of oil and gas to their full extent. The demands for adequate corrosion protection in this field of application require excellent chemical resistance at high operating temperatures combined with extreme pressure resistance.
 
One of our premium products was tested extensively by the research institutes of Saudi Aramco, the biggest oil company worldwide. Our coating is approved for Saudi Aramco-Standards APCS-2i, APCS-28 and APCS-117. Various internal coating applications for newly built and renewed tanks in Saudi Aramco oil and gas refineries are primarily conducted with our approved product.
 
Particular parts of our product range are coating systems with electrostatic dissipation capabilities which we invented for the storage of highly flammable substances. When oxygen is present during electrostatic charging, explosive reactions could occur in the vapor phase, the upper area of the tank. By the addition of nano-carbon fibers, conductive chains are formed in the coating. These facilitate the dissipation of electric charging and prevent dangerous reactions of the storage fluids.
 
By integration of special particles into the ceramic-filled epoxide resin coatings, isolating properties are attained. These specific coating systems are especially qualified outstandingly for tanks and pipelines with exceeding temperature loads. Furthermore, they can effectuate the reduction of nuclear radiation (gamma rays) substantially.
 
Through several years of intensive research, we have developed special internal coating systems for storage tanks of crude oil and all kinds of hydrocarbons, which provide a steady long-term protection against biocorrosion induced by SRB bacteria. These coating products prevent fatal pitting corrosion effectively. The unique mode of operation has been registered for international patent.

Tests & Certificates of independent institutes
 
·         Saudi Aramco Approvals APCS-2i, APCS-28 and APCS-117
·         10.000 hours salt spray test
·         thermo-shock-test (from 180°C to zero, 1.000 cycles)
·         resistance to acids, alkaline solutions, (pH 4-11), brine, oils, CO2, H2S, Hg, HgS at operating temperatures up to 110°C
·         resistance to E85 – ethyl alcohol, methanol/petrol, add-blue-solutions, RME
·         resistance against methyl alcohol
·         long-term resistance to deionized water (50°C)
·         >9.000 hours stability against “killer solution” – 98% H2SO4 / pure methyl alcohol / 3% NaCl-solution
(1/3, 1/3, 1/3 at 50°C)
·         cathodic disbondment test at 1,5 V (30 + 60 + 90 days at 60°C)
·         autoclave test with explosive decompression (natural gas, 100 bar, 100°C)
·         electrostatic dissipation capability < 106 Ω surface resistance