Steel tubes, pipes and fittings according to Det Norske Veritas Rules for classification PT. 2, certificate n° AMM-3810 & 3827
M0402 Longitudinally welded tubes, certificate n° M0402
Certificate of approval according Pressure Equipment Directive 2014/68/EU
2013-02 & 2013-10-02 (Total)
Certificate n° 97/84 (Elf)