What is CRA in valves?

CRA stands for Corrosion Allowance. In piping design, this refers to an added safety thickness on pressure-containing parts to compensate for corrosion over the valve's service life.

Typically applied to carbon steel, CRA values like 1.5 mm, 3 mm, or 6 mm are added on top of standard wall thicknesses according to ASME B16.34 or API 600.

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Founded in 2013, Bosseal Valve is a professional valve manufacturing company in Suzhou, China. We mainly supply Industrial Ball Valves, Gate Valves, Globe Valves, Check Valves, Butterfly Valves, Plug VaIves, and Strainers designed and manufactured according to API, ASME, ISO, DIN, BS, EN standards.
 
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