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1、8-1FlangesAalco Tel. 01932 250100 Fax: 01932 250101 E-mail: Marketing@amari-metals.comSection 8FlangesThis section contains extracts from American and British specifications applicable to stainless steel flanges.Subsec
2、tions and topics PagesFlanges - General Information 8-2ASME/ANSI Flanges (incl. MSS SP-44 and API 605) 8-4Weld Neck Flanges - Welding Ends (ASME/ANSI) 8-5Ring Joint Facings - ASME/ANSI B16.5 & B16.47 8-6Weld Neck F
3、langes - ANSI B16.5 8-10, 8-46Slip On Flanges - ANSI B16.5 8-17Blind Flanges - ANSI B16.5 & ASME B16.47 (MSS SP-44) 8-24, 8-46Lap Joint Flanges - ANSI B16.5 8-32Threaded Flanges - ANSI B16.5 8-39BS 3293 Flanges (Wel
4、d Neck and Slip On > NPS 26) 8-55BS 4504 Circular Flanges - General 8-60Weld Neck Flange - Welding Ends 8-62Flange Facings - BS 4504 8-62Flange Drilling Details - BS 4504 8-64Plate Flanges (Code 101) - BS 4504 8-65Wel
5、d Neck Flanges (Code 111) - BS 4504 8-66Slip On Flanges (Code 112) - BS 4504 8-68Threaded Flanges (Code 113) - BS 4504 8-69Blank Flanges (Code 105) - BS 4504 8-70BS 10 Flanges 8-71Pressure/Temperature Ratings (ASME/ANSI)
6、 8-73Specifications covered in this Section PageASME B16.5-1996 - Pipe Flanges and Flanged Fittings NPS 1/2 through NP 248-4 (general) 8-10 to 8-45ASME B16.47-1996 - Large Diameter Steel Flanges NPS 26 through NPS 60
7、 (Covers MSS SP-44 and API 605 flanges)8-4 (general) 8-46 to 8-54MSS SP-44 1996 - Edition, Steel Pipeline Flanges (Covered by ASME B16.47-1996 Series A) 8-46 to 8-50API Standard 605 - Cancelled (Covered by ASME B16.47-
8、1996 Series B) 8-51 to 8-54BS 10 : 1962 - Specification for Flanges and Bolting for Pipes, Valves, and Fittings 8-71BS 3293 : 1960 (incorporating amendment 1972) - Specification for Carbon Steel Pipe Flanges (over 24 i
9、nches nominal size) for the Petroleum Industry8-55BS 4504 : Section 3.1 : 1989 (incorporating amendments) - Circular Flanges for Pipes, Valves and Fittings (PN designated), Section 3.1 Specification for Steel Flanges8
10、-60ISO 7005-1 : 1992 (E), Metallic Flanges - Part 1: Steel Flanges (this is substantially the same as BS 4504) 8-60Flanges8-3 Aalco Tel. 01932 250100 Fax: 01932 250101E-mail: Marketing@amari-metals.comFlanges - Genera
11、l InformationSpecificationsRefer to page 8-1 for a list of flange specifications (with page references) covered in this Section.ManufactureNotes 1 MSS SP-44 flanges are designated Series A flanges in ASME B16.47. 2 API 6
12、05 has been cancelled. API 605 flanges are designated Series B flanges in ASME B16.47. 3 BS 10, although obsolete, remains in use for light weight economy stainless steel flanges. 4 Within specification ANSI B16.5, plate
13、 can only be used to provide blind flanges. 5 Most small BS 10 flanges are made from bar. 6 Castings are not included in this manual.? Materials. Most standards specify the material from which the flange is produced. The
14、 purchaser should specify the exact requirements. ? Flange Sizes. All sizes and grades compatible to standard pipe ranges and wall thicknesses (pressure ratings) are available. The table below provides a summary. ? Flan
15、ge Face. There are various face configurations for flanges. Typically: flat face, raised face, tongue and groove, ring joint.? Face Finish. The finish on the face of a flange is measured as an Arithmetical Average R
16、oughness Height (AARH). The finish is determined by the standard used. For example, ANSI B16.5 specifies face finishes within a range 125AARH - 500AARH (3.2 Ra to 12.5 Ra). Other finishes are available on request, for ex
17、ample 1.6 Ra max, 1.6/3.2 Ra, 3.2/6.3 Ra or 6.3/12.5 Ra. The range 3.2/6.3 Ra is most common. Notes 1 MSS SP-44 flanges are designated Series A flanges in ASME B16.47. It also covers flanges in the range NPS 12 to 24, t
18、hese being equivalent to ASME/ANSI B16.5 flanges in the same range (except for the addition of NPS 22 in MSS SP-44). 2 API 605 has been cancelled. API 605 flanges are designated Series B flanges in ASME B16.47. Ranges qu
19、oted are based on ASME B16.47 Series B. 3 Dimensions not covered in this summary.Summary of materials used for flanges ASME/ ANSI B16.5ASME B16.47 Series A (or MSS SP-441)ASME B16.47 Series B ( or API 6052)BS 4504BS 32
20、93 BS 103Forging (ASTM A 182) ? ? ? ? ? ?Plate (ASTM A 240)4 ? ? ?Bar5 ?Casting6 ? ? ?Summary of flange sizes specified by common standardsFlange TypeSpecificationsASME/ANSI B16.5ASME B16.47 Series A (or MSS SP-441)ASME
21、 B16.47 Series B (or API 6052)BS 4504 (ISO 7005-1) BS 3293Nominal Pipe SizesNPS 26 >NPS 26 DN 10 to DN 4000 > NPS 26Nominal Pressure (Class)Class (lb) Class (lb) Class (lb) PN (bar) Class (lb)Weld Neck 150-2500 15
22、0-900 75-900 2.5-40 150-600Slip-on 150-1500 - - 2.5-40 150-600Blind 150-2500 300-900 300-900 2.5-40 -Lap Joint 150-2500 - - 6-403 -Socket Weld 150-1500 - - N/A -Threaded 150-2500 - - 6-40 -Flat/Raised Facings As above As
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