Regarding the marking of valve body material
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Valves are often marked with WCB or CF8. These are the codes for American standard materials. Don’t domestic standards specify any requirements for the material code of valve bodies?
Domestic valve standards also impose requirements regarding labeling; typically, the diameter, pressure rating, material of the valve body, and flow direction are all indicated on the valve body. Regarding valve materials: most are forged or cast grades. You can refer to the relevant specifications for valves to find out.
In China, the standard for valve markings is GB/T 12220 \"Industrial Valves – Markings\". The material designation on the valve body is intended primarily for quality tracking; as for how it should be written and interpreted, that is up to the manufacturer. .
Generally, domestic designations such as 304