Seamless carbon steel elbows as per ASME B16.9. Max. C-content 0.22% with max. C-equivalent of 0.41% (long formula). Additional requirements as per NACE MR0175/ISO 15156-2 and MR0103. Manufacturing, testing and inspection as per ASTM A234M/A960 and SA234/SA960. Basic material as per ASTM A106 material grade B with a guaranteed hot yield strength as per ASTM / ASME Section II Part D. Material grade WPB and/or P265GH as per EN 10253-2. If desired with inspection report as per EN 10204/3.1.