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1. Face: Can be raised face(RF), full face(FF), Ring joint(RTJ)Groove, Tongue, or customized,2.Bevel end as per ANSl B16.253.CNC fine finished. Face finish: The finish on the face of fange is measured asan Arithmetical Average Roughness Height(AARH).Thefinish is determined by the standard used. For example,ANSl B16.5 specifies face finishes within a range 125AARH500AARH(3.2Ra to 12.5Ra).0ther finishes are available onrequst, for example 1.6 Ra max,1.6/3.2 Ra, 3.2/6.3Ra or6.3/12.5Ra.The range 3.2/6.3Ra is most common.
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