ASTM A216 Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service ASTM A216 covers carbon steel castings for valves, flanges, fittings, or other pressure-containing parts for high temperature service and of quality suitable for assembly with other castings or wrought-steel parts by fusion welding. Three grades, WCA, WCB, and WCC, are covered in this specification. Selection…