Carbon steel ASTM 216 grades WCB & WCC

Dear colleagues

Can someone state the difference between the grades of WCC & WCB of carbon steel. One valve manufacturer proposed to supply us with carbon steel valves ASTM A216 Gr. WCC instead of the original request of having the valves bodies made of ASTM A216 Gr. WCB. What is the exact difference between WCC & WCB. The valves shall be utilized in hydrocarbon service.

Thanks Received on Sat Jan 26 16:06:00 2008