【法兰标准】MSS SP-9-2001 青铜、铁和钢制法兰的孔口平面.pdf
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1、STD-MSS SP-9-ENGL 2001=5770b1iU 0501434 191=MSS SP-9-2001 Spot Facing For Bronze,Iron and Steel Flanges Standard Practice Developed and Approved by the Manufacturers Standardization Society of the Valve and Fittings Industry,Inc.127 Park Street,NE Vienna,Virginia 22180(703)281-661 3 Copyright MSS Pr
2、ovided by IHS under license with MSSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-标准下载网()STD-MSS SP-I-ENGL ZiJl,5770biU USOL1i35 28 m STANDARD PRACTICE SP-9 MSS This MSS Standard Practice was developed under the consensus of the MSS Technical Committee 102,110,20
3、 1,and the MSS Coordinating Committee.The content of this Standard Practice is the result of the efforts of competent and concerned volunteers to provide an effective,clear,and non-exclusive specification that will benefit the industry as a whole.This MSS Standard Practice is intended as a basis for
4、 common practice by the manufacturer,the user,and the general public.The existence of an MSS Standard Practice does not in itself preclude the manufacture,sale,or use of products not conforming to the Standard Practice.Mandatory con-formance is established only by reference in a code,specification,s
5、ales contract,or public law,as applicable.I Substantive changes in the 2001 edition are“flagged”by parallel bars as shown on the margins of this paragraph.The specific detail of the change may be determined by comparing the material I flagged with that in the previous edition.Unless otherwise specif
6、ically noted in the MSS SP,any standard referred to herein is identified by the date of issue that was applicable to the referenced standard(s)at the date of issue of the MSS SP.(See Annex A.)I U.S.customary units in this SP are the standard;the metric units are for reference only.I Any part o f thi
7、s standard may be quoted.Credit lines should read ExtractedJi.om MSS SP-9,2001,with permission o f the publisher,the Manufacturers Standardization Society.Reproduction prohibited under copyright convention unless written permission is granted by the Manufacturers Standardization Society o f the Valv
8、e and Fittings Industry,Inc.Originally Approved July 1929 Copyright 0,1984 by Manufacturers Standardization Sociey of the Valve and Fittings Industry,Inc.Printed in U.S.A.I Copyright MSS Provided by IHS under license with MSSNot for ResaleNo reproduction or networking permitted without license from
9、IHS-,-,-标准下载网()标准分享网 w w w.b z f x w.c o m 免费下载STD MSS Bolt S.=1 518 SP-9-ENGL 2OOL E Spot Face Diameter Minimum Inches m 3.12 79.2 MSS STANDARD PRACTICE SP-9 3 14 718 1 SPOT FACING FOR BRONZE,IRON AND STEEL FLANGES 1.56 39.6 1.78 45.2 2.03 51.6 1.SCOPE 1 7/8 2 2 114 This MSS Standard applies to the
10、 spot facing of pipe flanges in bronze,gray iron,ductile iron or steel when cast integral with valves and fit-tings,as well as the companion flanges,when so required by the standard for the product.3.50 88.9 3.75 95.3 4.18 106.2 2.DESIGN 1 2.1 The dimensions for spot facing apply to the use of hexag
11、on head boltsor hexagon nuts in accordance with American National Standard heavy series,ASME B 18.2.1 and ASME B18.2.2.For boit sizes 1/2 and 5/8,the minimum diameter of spot facing is sufficient for regular square head bolts in accordance with ASME B 18.2.1.2 314 5.06 128.5 3 5.50 139.7 3 IR 6.37 1
12、61.8 2.2 The minimum spot facing diameters illustrated in Figure 1 are listed in Table 1 for bolt sizes 1/2 in.through 3 1/2 in.2.3 When cutting into the hub of companion flanges or the body of flanged fittings and valves with spot facing tools is necessary,the resulting wall thick-ness shall not be
13、 less than the minimum required thick-ness specified in the appropriate standard.2.4 Eccentricity of the spot face diameter with the bolt hole must be limited to provide sufficient facing for the bolt head and nut used in the joint assembly.2.5 The bolt sizes for which spot facing is provided includ
14、e a11 the sizes required in the various flange standards as indicated:FIGURE 1-Flange With Spot Facing Table 1-Spot Face Diameters Spot Face Diameter Minimum Inches 28.4 I 5 i8 I 1.37 I 34.8 I I 1 1/8 I 2.21 I 56.1 I I 1 3/4 I 3.31 I 84.1 I I 2 il2 I 4.62 I 117.3 I Copyright MSS Provided by IHS unde
15、r license with MSSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-标准下载网()w w w.b z f x w.c o mSTD-MSS SP-7-ENGL 2001 577DbYO 0501Li37!-TO I MSS STANDARD PRACTICE SP-9 Bronze ASME B16.24,Class 150,300,400,600,900,1500,and 2500 Pipe Flanges and Class 150 and 300 Flan
16、ged Fittings.MSS SP-106 Cast Copper Alloy Flanges and Flanged Fittings,Class 125,150 and 300.Gray Iron ASME B 1 6.1 Cast Iron Pipe Flanges and Flanged Fittings,Class 25,125,and 250.Ductile Iron ASME B 16.42 Ductile Iron Pipe Flanges and Flanged Fittings,Class 150 and 300.Steel ASME B 16.5 Pipe Flang
17、es and Flanged Fittings.2.6 The depth of the spot face is not given in this standard as the requirement is covered in the various flange fittings standards.2.7 Back facing may be used as an alternate to spot facing at the manufacturers option.When used,back facing shall provide a surface that will e
18、nsure full bearing of the bolting nut.The mini-mum diameter of the back face shall be no less than the bolt circle diameter less one spot face diameter as listed in Table 1.When cutting into the hub of flanges,flange fittings,or flanged valve bodies with back facing tools,the intersection shall have
19、 a radius of not less than 1116-inch.The resulting wall thickness for fittings,and valve bodies shall not be less than the minimum re-quired thickness specified in the appropriate standard.2.8 The bearing surfaces of spot faces or backfacing shall be parallel to the flange face within the requiremen
20、t of the appropriate standard in 2.5.2 Copyright MSS Provided by IHS under license with MSSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-标准分享网 w w w.b z f x w.c o m 免费下载w w w.b z f x w.c o mMSS STANDARD PRACTICE SP-9 ANNEX A Referenced Standards and Applicable Da
21、tes This Annex is an integral part of this standard practice which is placed after the m a i n text for convenience.Standard Name or Designation ASME.ANSI/ASME,ANSI,ASME JANS1 B 16.1-1998 B 16.5-1996 B 16.24-1991(R 1998)B 16.42-1998 B 18.2.1-1996 B 18.2.2-1987 1999)Cast Iron Pipe Flanges and Flanged
22、 Fittings Pipe Flanges and Flanged Fittings Cast Copper Alloy Pipe Flanges and Flanged Fittings Ductile Iron Pipe Flanges and Flanged Fittings Square and Hex Bolts and Screws,Including Askew Head Bolts,Hex Cap Screws,and Lag Screws Square and Hex Nuts SP-106-1990(R 1996)Cast Copper Alloy Flanges and
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