API 5000What does it refer to? 1

api5000API 5000, 10000 are used in reference to wellhead 'christmas tree' pressure ratings as well used for the wing valve, master valve ratings. There may be hher classes asAPI 6A - TYPE - 6B 34.5 MPA (5000 PSI) Size B OD C (MAX.) K P E T Q X BC N H LN HL JL Ring Number R or RX 2 116˝ 53.2 215 3 124 95.25 7.9 46.1 38.1 104.8 165.1 8 26 109.5 60.3