API 6a flange | API 6a 5000 10000 weld neck flanges suppliers
api5000api 6a - type - 6b 34.5 mpa (5000 psi) gbt 22513-2013API 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 as