The main contents of the standard include: evaluation of the wind power flange manufacturer's capabilities, procurement contracts and manufacturer's production preparations, control of raw materials used in wind power flanges, key process control of forging and heat treatment, physical and chemical inspection and non-destructive testing, machining dimensions and appearance Control and inspection, product labeling and packaging methods, transportation process and risk control, quality certificate requirements, guidance related to user re-inspection. It also provides the recommended formats for product quality certificates, flange size and appearance inspection reports, magnetic particle inspection reports, ultrasonic inspection reports, sample and sample location diagrams, dimensional tolerances and geometric tolerance requirements, etc.
T/DXFFA 3-2019 history
2019T/DXFFA 3-2019 Guide for procurement of tower flanges for wind turbines