《MSS SP-114-2007 Corrosion Resistant Pipe Fittings Threaded And Socket Welding Class 150 and 1000.pdf》由会员分享，可在线阅读，更多相关《MSS SP-114-2007 Corrosion Resistant Pipe Fittings Threaded And Socket Welding Class 150 and 1000.pdf（32页珍藏版）》请在三一文库上搜索。
1、MSS SP-114-2007 Corrosion Resistant Pipe Fittings Threaded and Socket Welding Class 150 and 1000 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) 281-6613 Fax: (703)
2、281-6671 E-mail: infomss-hq.org www.mss-hq.org MSSSTANDARD PRACTICESP-114 i This MSS Standard Practice was developed under the consensus of the MSS Technical Committee 108 and the MSS Coordinating Committee. The content of this Standard Practice is the result of the efforts of competent and concerne
3、d 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 common practice by the manufacturer, the user, and the general public. The existence of an MSS Standard Practice does not in i
4、tself preclude the manufacture, sale, or use of products not conforming to the Standard Practice. Mandatory conformance is established only by reference in a code, specification, sales contract, or public law, as applicable. Unless otherwise specifically noted in this MSS SP, any standard referred t
5、o 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.) Non-toleranced dimensions in this Standard Practice are nominal, and, unless otherwise specified, shall be considered “for reference only”. In this Standa
6、rd 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 appearing in this document are construed as “supplemental“. Supplemental“ informat
7、ion 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 material flagged with that in the previous edition. Any part of this st
8、andard may be quoted. Credit lines should read Extracted from MSS SP-114, 2007 with permission of the publisher, the Manufacturers Standardization Society. Reproduction prohibited under copyright convention unless written permission is granted by the Manufacturers Standardization Society of the Valv
9、e and Fittings Industry Inc. Originally Approved May, 1995 Copyright , 1995 by Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. Printed in U.S.A. MSSSTANDARD PRACTICESP-114 ii FOREWORD This document established a standard for corrosion resistant pipe fittings, threaded
10、and socket-welding. Class 150 and Class 1000, produced for a number of years by various manufacturers to somewhat different dimensions although basically similar in principle. These fittings were originally developed for use in the paper, food, pharmaceutical, distillery, sanitary, chemical, petro-c
11、hemical, and other corrosive and high temperature industry environments. The original design of these fittings was based on the dimensions of ASME B16.3, Malleable Iron Threaded Fittings. This Standard Practice, originally approved May 1995, was revised in 2001 to include Class 150 and Class 1000 sq
12、uare head plugs, hex head plugs and bushings, locknuts, and threaded and socket-welding unions. MSSSTANDARD PRACTICESP-114 iii TABLE OF CONTENTS SECTIONPAGE 1 SCOPE. 1 2 PRESSURE-TEMPERATURE RATINGS. 1 3 SIZE. 1 4 MARKING 2 5 MATERIAL. 2 6 DIMENSIONS AND TOLERANCES 3 7 THREADING 3 8 SOCKET WELDING 4
13、 9 RIBS. 4 10 PLUGS, BUSHINGS, AND LOCKNUTS 4 11 FACE BEVEL . 4 12 WELDING. 4 13 TESTING. 4 14 PIPE UNIONS. 4 TABLE 1 Pressure-Temperature Ratings. 1 2 Center-to-End Tolerances 3 3 Dimensions of Class 150 Cast Threaded 90 Elbows, Tees, Crosses, and 45 Elbows. 5 4 Dimensions of Class 150 Cast Threade
14、d 90 Street Elbows 6 5 Dimensions of Class 150 Cast Threaded Couplings (Straight and Reducing Sizes). 7 6 Dimensions of Class 150 Cast Threaded Caps 8 7 Dimensions of Class 150 Cast Socket Welding Fittings 9 8 Dimensions of Class 150 Cast Threaded Square Head Plugs 10 9 Dimensions of Class 150 Cast
15、Threaded Hex Head Plugs 11 10 Dimensions of Class 150 Cast Threaded Hex Head Bushings 12 11 Dimensions of Threaded Locknuts 14 12 Dimensions of Class 150 Cast Threaded Unions. 15 13 Dimensions of Class 150 Cast Socket Welding Unions 16 14 Dimensions of Class 1000 Wrought Threaded 90 Elbows, Tees, Cr
16、osses, and 45 Elbows 17 15 Dimensions of Class 1000 Wrought Threaded 90 Street Elbows 18 16 Dimensions of Class 1000 Wrought Threaded Couplings (Straight and Reducing Sizes) and Caps. 19 17 Dimensions of Class 1000 Wrought Socket Welding Fittings. 20 18 Dimensions of Class 1000 Wrought Threaded Squa
17、re Head Plugs. 21 19 Dimensions of Class 1000 Wrought Threaded Hex Head Plugs . 22 20 Dimensions of Class 1000 Wrought Threaded Hex Head Bushings . 23 21 Dimensions of Class 1000 Wrought Threaded Unions 25 22 Dimensions of Class 1000 Wrought Socket Welding Unions. 26 FIGURE 1 Identification of Reduc
18、ing Fittings 2 ANNEX A Referenced Standards and Applicable Dates. 27 MSSSTANDARD PRACTICESP-114 1 1. SCOPE 1.1 This Standard Practice for corrosion resistant pipe fittings threaded and socket welding, Class 150 and 1000, establishes requirements for the following: a) Pressure-temperature ratings b)
19、Size and method of designating openings of reducing fittings c) Marking d) Minimum requirements for materials e) Dimensions and tolerances f) Threading g) Tests 2. PRESSURE-TEMPERATURE RATINGS 2.1 Pressure-temperature ratings for these fittings are shown in Table 1. Ratings are independent of the co
20、ntained fluid and are the maximum allowable working pressures at the tabulated temperatures. Intermediate ratings may be obtained by linear interpolation between the temperatures shown. 2.2 The temperatures shown for the corresponding pressure rating shall be the material temperature of the pressure
21、 retaining structure. It is implied that the material temperature is the same as the fluid temperature. Use of a pressure rating at a material temperature other than that of the contained fluid is the responsibility of the user and subject to the requirements of any applicable code. 2.3 For purposes
22、 of this Standard Practice, castings are included for Class 150 fittings only. 2.4 The wall thickness of the fittings covered by this Standard Practice corresponds to Schedule 40 pipe. When thinner pipe of equivalent material is used, its strength may govern the rating. When Schedule 40 pipe of equi
23、valent material is used, the strength of the fitting governs the rating. TABLE 1 Pressure-Temperature Ratings Temperature (F) Class 150 (castings) PSIG Class 1000 (Wrought) PSIG -20 to 150 300 1000 200 265 910 250 225 825 300 185 735 350 150(a) 650 400 560 450 475 500 385 550 300 NOTE: (a) Permissib
24、le for service temperature up to 366 degrees Fahrenheit, reflecting the temperature of saturated steam at 150 psig. 3. SIZE 3.1 The size of the fittings listed in the following Tables is identified by the corresponding nominal (b) pipe size (NPS). NOTE: (b) The use of the word “nominal” as a modifie
25、r of a dimension or size is intended to indicate that the stated dimension or size is used for purposes of designation. CORROSION RESISTANT PIPE FITTINGS THREADED AND SOCKET WELDING CLASS 150 AND 1000 MSSSTANDARD PRACTICESP-114 2 3.2 For reducing tees, crosses, and Y-branches (laterals), the size of
26、 the largest run opening shall be given first, followed by the size of the opening at the opposite end of the run. Where the fitting is a tee or Y-branch (lateral), the size of the outlet is given last. The straight line sketches of Fig. 1 illustrate how the reducing fittings are read. FIGURE 1 Iden
27、tification of Reducing Fittings 4. MARKING 4.1 Class 150 Fittings Each Class 150 fitting shall be marked for identification with: a) The manufacturers name or trademark b) Material identification c) The symbol “SP114” to denote compliance with this Standard Practice d) Class 150 e) Size f) Other mar
28、kings in accordance with MSS SP- 25. Where size and shape of fittings do not permit all of the above markings, they may be omitted in the reverse order given. g) The marking of plugs, bushings, and locknuts is not required by this Standard Practice. 4.2 Class 1000 Fittings Each Class 1000 fitting sh
29、all be marked for identification with: a) The manufacturers name or trademark b) Material identification c) The symbol “SP114” to denote compliance with this Standard Practice d) Class 1000 or 1M e) Size f) Other markings in accordance with MSS SP- 25. Where size and shape of fittings do not permit
30、all of the above markings, they may be omitted in the reverse order given. g) The marking of plugs, bushings, and locknuts is not required by this Standard Practice. 5. MATERIAL 5.1 Class 150 fittings shall be cast or may be wrought. Class 1000 fittings shall be wrought only. 5.2 CastingsThe chemica
31、l and mechanical properties of the castings shall be at least equal to the grades contained in ASTM A 351. Castings shall be heat treated by the solution annealing method specified in ASTM A 351. The castings shall be capable of passing the intergranular corrosion tests performed in accordance with
32、practice B of ASTM A 262 with a corrosion rate established between the manufacturer and purchaser. Alternatively, the castings shall be capable of passing the intergranular tests performed in accordance with practice E, alternate method B, of ASTM A 262. The manufacturer shall be prepared to certify
33、 that the product has been so produced. 5.3 Wrought Fittings, couplings, and caps shall be made from wrought forgings, seamless tubing, or bar stock. The chemical and mechanical properties shall be as a minimum equal to the grades contained in ASTM A 182, A 479 or A 511. Wrought material shall be he
34、at treated by the solution method as specified in ASTM A 182, A 479, or A 511. The wrought material shall be capable of passing the intergranular corrosion tests performed in accordance with practice E of ASTM A 262. The manufacturer shall be prepared to certify that the product has been so produced
35、. MSSSTANDARD PRACTICESP-114 3 6.DIMENSIONS AND TOLERANCES 6.1 General The dimensions and tolerances of cast and wrought fittings are given in Tables 2 through 22. 6.2 Reducing Fittings Reducing fittings shall have the same center-to-end dimensions and band diameter as the straight-size fittings cor
36、responding to the largest size opening in the reducing fittings. 6.3 Tolerances Unless otherwise noted, the dimensions in this Standard Practice are nominal and are subject to the designated manufacturing tolerances. The following tolerances apply: a)Metal Thickness Metal thickness at no point shall
37、 be less than 90% of the value given in Tables 3 through 10 and 12 through 22. b)Center-to-End Permitted center-to-end tolerances of fittings are shown in Table 2. Tolerances for end-to-end dimensions, lengths of couplings, and reducers shall be twice those given for center-to-end dimensions. The la
38、rgest nominal pipe size in a reducing fitting governs the tolerance to be applied to all openings. TABLE 2 Center-to-End Tolerances NOMINAL PIPE SIZE PLUS OR MINUS, IN. 1/8, 3/8 0.05 1/2, 0.06 1, l-1/4 0.07 l-1/2, 2 0.08 2-l/2, 3 0.10 4 0.12 7. THREADING 7.1 Types of Threads All fittings, except loc
39、knuts, shall be threaded in accordance with ANSI/ASME B1.20.1, and shall have tapered threads. Locknut threads shall be NPSL straight pipe threads in accordance with ANSI/ASME B1.20.1. 7.2 Countersink or Chamfer Internal threads shall be countersunk or chamfered a distance of not less than one half
40、the pitch of the thread at an angle of approximately 45 with the axis of the thread, and external threads shall be chamfered at an angle of 30 to 45 with the axis, both for the purpose of easier entrance in making a joint and for protection of the thread. Countersinking and chamfering shall be conce
41、ntric with the threads. 7.3 Thread Gaging 7.3.1 External Threads Variations in threading shall be limited to one turn large or one turn small from the gage face of the ring gage. The reference point for gaging shall be the end of the thread. 7.3.2 Internal Threads Variations in threading shall be li
42、mited to one turn large or one turn small from the gaging notch of the plug gage. The reference point for gaging is the last thread scratch on the chamfer cone. 7.4 Length The thread length specified in all Tables shall be measured to include the countersink or chamfer. 7.5 Alignment The maximum all
43、owable variation in the alignment of threads of all openings of threaded fittings shall be 0.06 in./ft. MSSSTANDARD PRACTICESP-114 4 8. SOCKET-WELDING 8.1 Dimensions for socket-welding fittings shall conform to Tables 2, 7, 13, 17, and 22 and the general values given in Tables 3, 5, 6, 14, and 16. 8
44、.2 The ends of socket-welding fittings shall be flat and at right angles to the socket axis and shall provide a minimum of 75% of the socket wall thickness for the fillet welding surface. 8.3 The socket bore shall be of uniform depth and diameter and exhibit a good workmanship finish that is free of
45、 burrs. 9. RIBS 9.1 General The addition of ribs or lugs is permitted. Where ribs are used, it is recommended that their thickness should be the same as specified for the metal thickness of the fitting. 10. PLUGS, BUSHINGS, AND LOCKNUTS 10.1 For dimensions of plugs, bushings, and lock nuts, see Tabl
46、es 8, 9, 10, 11, 18, 19, and 20. 11. FACE BEVEL 11.1 A bevel not exceeding 5 degrees is permitted on the faces of threaded fitting openings. Center-to- end, end-to-end, and width of band dimensions may include or exclude the bevel. 12. WELDING 12.1 Installation welding requirements are outside the s
47、cope of this Standard Practice. 13. TESTING 13.1 Hydrostatic testing of fittings is not required by this Standard Practice. All fittings shall be capable of withstanding, without leakage or impairment of serviceability, a pressure equal to that listed in Table 1 at the -20 to 150F pressure rating fo
48、r the applicable Class. 14. PIPE UNIONS 14.1 Union parts from different manufacturers are not functionally interchangeable and such usage is not recommended. MSSSTANDARD PRACTICESP-114 5 TABLE 3 Dimensions of Class 150 Cast Threaded 90 Elbows, Tees, Crosses, and 45 Elbows Nominal Pipe Size Center- t
49、o-End, Elbows, Tees, the dimensions may be 5/8, 1l/16, 7/8, 1 l/8, and 1 7/16 in. respectively, in order to use regular bar stock sizes. (c) These dimensions are the nominal size of wrench as given in Appendix V of American National Standard, Square and Hex Bolts and Screws (ASME B18.2.1). Hex bushings are designed to fit these wrenches. MSSSTANDARD PRACTICESP-114 14 TABLE 11 Dimensions of Threaded Locknuts Width Across FlatsNominal Pipe Size Nominal Thickness, Min. A Steel Min. (b) C Cast Min. C Diameter of Packing R