ANSI-ASME-flanges-tolerance-face-type-face-finish参考标准规范

HEBEI HAIHAO GROUPISO.ABS.CE/PED APPROVEDMengcun,Cangzhou,Hebei,ChinaProfessional Steel Piping SolutionHAIHAO GROUPwww.haihaopiping.comEmail:sales@haihaogroup.comFlanges -General InformationSpecificationsRefer to page 8-1 for a list of flange specifications(with page references)covered in this Section.ManufactureSummary of materials used for flangesASME/ASME B16.47ASME B16.47ANSISeries ASeries BBSBS(or API 6052)45043293BS103B16.5(or MSS SP-441)Forging (ASTM A 182)Plate (ASTM A 240)4Bar5CastingNotes1MSS SP-44 flanges are designated Series A flanges in ASME B16.47.API 605 has been cancelled.API 605 flanges are designated Series B flanges in ASME B16.47.3BS 10,although obsolete,remains in use for light weight economy stainless steel flanges.Within specification ANSI B16.5,plate can only be used to provide blind flanges.Most small BS 10 flanges are made from bar.Castings are not included in this manual.O Materials.Most standards specify the materialO Face Finish.The finish on the face of a flange isfrom which the flange is produced.The purchasermeasured as an Arithmetical Average Roughnessshould specify the exact requirements.Height(AARH).The finish is determined by theO Flange Sizes.All sizes and grades compatible tostandard used.For example,ANSI B16.5standard pipe ranges and wall thicknessesspecifies face finishes within a range 125AARH-(pressure ratings)are available.The table below500AARH(3.2 Ra to 12.5 Ra).Other finishes areprovides a summary.available on request,for example 1.6 Ra max.Flange Face.There are various face1.6/3.2Ra,3.2/6.3Raor6.3/12.5Ra.The rangeconfigurations for flanges.Typically:flat face,3.2/6.3 Ra is most common.raised face,tongue and groove,ring joint.Summary of flange sizes specified by common standardsSpecificationsASME B16.47ASME B16.47ASME/ANSISeries ASeries BBS4504B16.5(or MSS SP-441)(or API6052)(1S07005-1)BS3293Flange TypeNominal Pipe SizesNPS26≥NPS26≥NPS26DN 10 toDN4000≥NPS26Nominal Pressure (Class)Class (Ib)Class (Ib)Class (lb)PN (bar)Class (Ib)Weld Neck150-2500150-90075-9002.5-40150-600Slip-on150-15002.5-40150-600Blind150-2500300-900300-9002.5-40Lap Joint150-25006-403Socket Weld150-1500N/AThreaded150-25006-40Flat/Raised FacingsAs aboveAs aboveAs aboveAs aboveAs aboveRing Joint Facings150-2500300-900300-9002.5-40300-600Other Facings150-250032.5-40Notes1MSS SP.44 flanges are designated Series A flanges in ASME B16.47.It also covers flanges in the range NPS 12 to 24.these being equivalent to ASME/ANSI B16.5 flanges in the same range (except for the addition of NPS 22 in MSS SP-44).2API 605 has been cancelled.API 605 flanges are designated Series B flanges in ASME B16.47.Ranges quoted are basedon ASME B16.47 Series B.Dimensions not covered in this summary.