阀门标准-MSS SP-6-2007 管法兰以及阀门和管件端法兰的接触面标准精度(天选打工人).pdf
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1、 MSS SP-6-2007 Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End Flanges of Valves and Fittings Standard Practice Developed and Approved by the Manufacturers Standardization Society of the Valve and Fittings Industry,Inc.127 Park Street,NE Vienna,Virginia 22180 Phone:(703)281-66
2、13 Fax:(703)281-6671 E-mail:infomss-hq.org www.mss-hq.org Copyright MSS Provided by IHS under license with MSSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MSS STANDARD PRACTICE SP-6 iThis MSS Standard Practice was developed under the consensus of the MSS Technic
3、al Committees 102,110,201,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
4、intended as a basis for 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 conformance is established only by reference in
5、a code,specification,sales contract,or public law,as applicable.Unless otherwise specifically noted in this 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 this MSS SP.(See Annex A.)U.S.customary units
6、 in this SP are the standard;the metric(SI)units are for reference only.In this Standard Practice all notes,annexes,tables,and figures are construed to be essential to the understanding of the message of the standard,and are considered part of the text unless noted as supplemental.All appendices app
7、earing in this document are construed as supplemental.Supplemental information does not include mandatory requirements.Substantive changes in this 2007 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
8、material flagged with that in the previous edition.Any part of this standard may be quoted.Credit lines should read Extracted from MSS SP-6,2007 with permission of the publisher,the Manufacturers Standardization Society.Reproduction prohibited under copyright convention unless written permission is
9、granted by the Manufacturers Standardization Society of the Valve and Fittings Industry Inc.Originally Approved December,1929 Copyright,1985 by Manufacturers Standardization Society of the Valve and Fittings Industry,Inc.Printed in U.S.A.Copyright MSS Provided by IHS under license with MSSNot for Re
10、saleNo 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MSS STANDARD PRACTICE SP-6 11.SCOPE 1.1 This Standard Practice pertains to the finish of gasket contact faces of pipe flanges and end flanges of valves and fittings.1.2 This Standard Practice is
11、intended for applications to products for which ASME B16 Standards do not contain complete facing finish requirements or for which there are no such Standards.2.DEFINITIONS 2.1 Roughness Average The term Ra(Roughness average)is expressed in micro-inches(in)micro-meters(m).2.2 Flange Facing Finish Th
12、e surface finish on the flange contact face,see Figure 1,that comes in contact with a gasket upon flange assembly.3.REQUIREMENTS 3.1 Flange facing finish shall be judged by visual comparison with Ra standards(see ASME B46.1)and not by instruments having stylus tracers and electronic amplification.Th
13、e finishes required are given in Table 1.Other finishes may be furnished by agreement between purchaser and manufacturer.3.2 Dimensions shown(in Table 1)shall not be cause for rejection by depth gage measurement or precision instrument measurements.4.LIMITATIONS 4.1 Surface finishes listed are not n
14、ecessarily optimum for all gasket types of materials.4.2 On flat faces,serrations need not extend beyond corresponding raised face diameter.STANDARD FINISHES FOR CONTACT FACES OF PIPE FLANGES AND CONNECTING END FLANGES OF VALVES AND FITTINGS FIGURE 1 Types of Contact Faces for Flanges Copyright MSS
15、Provided by IHS under license with MSSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MSS STANDARD PRACTICE SP-6 2TABLE 1 Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End Flanges of Valves and Fittings Type of Contact Faces Steel Ductile Iron
16、Gray Iron Bronze Flat or 1-16”(1.6 mm)Raised Face and Serrated(a):spiral or concentric,45 to 55 per inch(18 to 21 per cm)recommended.The resultant surface finish shall have a 125 to 250 in(3.2 to 6.3 m)Ra.Non-serrated(b):250 in(6.3 m)Ra max.,or Serrated(a):spiral or concentric,11 to 50 per in.(5 to
17、19 per cm).Depth approx.0.003 to 0.020 in.(0.075 to 0.51 mm)Non-serrated(b):250 in(6.3 m)Ra max.,or Serrated(a):spiral,11 to 50 per in.(5 to 19 per cm)or concentric,8 or more per in.(4 or more per cm).Depth approx.0.003 to 0.020 in.(0.075 to 0.51 mm)Non-serrated(b):125 in(3.2 m)Ra max.,or Serrated(a
18、):spiral or concentric,30 to 80 per in.(12 to 31 cm).Depth approx.0.003 to 0.020 in.(0.075 to 0.51 mm).1/4”(6.4 mm)Raised and Large Male&Female Small Male&Female,Large&Small Tongue&Groove Serrated(as above)(a)or Non-serrated:125 in.(3.2 m)Ra max.Ring Joint Side Walls of Groove Non-serrated:63 in.(1.
19、6 m)Ra max.Non-serrated:63 in.(1.6 m)Ra max.NOTES:(a)Unless otherwise specified,the manufacturer may supply either spiral or concentric grooves for serrations.The spiral machining operation is commonly accomplished with the cutting tool having 0.06 in.(1.6 mm)or larger tip radius.(b)Unless otherwise
20、 specified,the manufacturer may supply either the serrated(commonly accomplished with the cutting tool having 0.06 in.(1.6 mm)or larger tip radius)or smooth finish.Copyright MSS Provided by IHS under license with MSSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-标
21、准分享网 w w w.b z f x w.c o m 免费下载MSS STANDARD PRACTICE SP-6 3ANNEX A Referenced Standards and Applicable Dates This annex is an integral part of this Standard Practice and is placed after the main text for convenience.Standard Name or Description ASME,ANSI/ASME,ANSI,ASME/ANSI B46.1 1995 Surface Textur
22、e(Surface Roughness,Waviness,and Lay)The following organizations publish the above standard:ANSI American National Standards Institute 25 West 43rd Street 4th Floor New York NY 10036 ASME ASME International Three Park Avenue New York,NY 10016-5990 Copyright MSS Provided by IHS under license with MSS
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