This beauty is small but important. We are working here on the body of a 3″, 150# gate valve, manufactured in ASME material SA216 WCB for an ASME Section III nuclear classified valve.

SA216 refers to the material specification set by the American Society of Mechanical Engineers (ASME) for carbon steel castings for pressure-containing parts. The “W” stands for “weldable,” indicating that the material can be welded, while the “CB” stands for “castings, carbon.” This material it is known for its good strength, toughness, and ductility, as well as its ability to resist corrosion and oxidation at low temperatures.

In the picture we can see one of the applicable NDE during manufacturing stage. All body machined parts shall be Dye Penetrant examined, approval in accordance with ASME III ND-2576.