all vessels classed by DNV GL. Temperature range: Refer to certificate Max. working press.: up to 630bar Sizes: 6mm up to 38mm Issued at Hamburg on 2019-04-11 This Certificate is valid until 2024-04-10. DNV [...] GmbH – Testing Laboratory, Wipperfürth 2017_0667/1 Repeated assembly test, gas tightness test (70bar), hydraulic pressure test and burst pressure test, sizes 06, 16, 25, 38. Remarks: - NW 6, brazed - [...] NW38, brazed - Tube material E235, fitting material 11SMnPb30+C 2017_0668/1 Gas tightness test (70bar), hydraulic pressure test, vacuum and pull- out test, sizes 6, 16, 25, 38. Remarks: - NW 6, brazed