Dammam desalination auxiliary water tanks, Saudi Arabia
Two vertical tanks, 66 m diameter, carbon steel epoxy-lined, international owner-engineer, EN 14015 reference. Localized items: Arabic signage on nozzles, third-party inspection by a GCC-recognized agency, containerized shipment to Dammam port, ZN supervisor on site for 60 days. Constant items: WPS library, RT archive, coating DFT map, hydrotest procedure.
Sinograin Hefei 14×10,000 m³ edible oil reserve, China
Food-grade internal finish, 304/316L option, insulated roof, Chinese grain-reserve audit. Localized: bilingual MDR, passivation cert, Ra<0.4 µm polish proof. Constant: same welding positioner, same NDT room.
Fuyu Petrochemical Dongying 3,000-ton tank farm, China
Mixed duty-diesel, crude, chemical. Localized: HAZOP-aligned nozzle schedule, chemical lining spark test, firefighting tie-in. Constant: ISO 45001 permit-to-work, same scafftag system.
Where the EPC wrapper saves money
Foundation drawing reviewed by tank engineer before concrete pour → avoids 20 mm settlement rework
Shell course nesting shared with rolling bay → plate lead time cut 7 days
Coating inspector travels with erection crew → no 2-week gap before topcoat
Warranty engineer carries original RT films to site → dispute resolution in days not months
FAQ snippet
"Does EPC tank supply mean the vendor builds the concrete foundation?" Not always. ZN can do turnkey including civil via its Class-II construction license, or supply a reviewed foundation drawing and supervise. Buyers in Africa often ask ZN to do steel-only; buyers in China often ask full turnkey. The workflow is modular.
The through-line is document control: every tank leaves with the same digital dossier structure whether it stores seawater, soybean oil or diesel.
