... Anti-rust oil, black painting. Epoxy Coating according to AWWA C-210 Bitumen Coating according to DIN30672, BS534 Coal- Tar Enamel ... according to DIN30678 Inside lining: Epoxy lining according to AWWA C-210 Bitumen Lining according to DIN30673, BS534 Coal-Tar ... ( Bending Test, Blow Test, Impact Test), ExteriorSize Inspection, Hydrostatic Test, X-ray Test.Mill Test Certificate:EN 10204/3.1B Third party ...