MSS-SP-43-1991-R2001.pdf

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1、STD-MSS SP-43-ENLL 1941 H 5771iL40 !I5ULiiiin ILi5 I I MSS SP-43-1991 Reaffirmed 2001 Wrought Stainless Steel Butt-welding Fittings Including Reference to Other Corrosion Resistant Materials Standard Practice Developed and Approved by the Manufacturers Standardization Society of the Valve and Fittin

2、gs Industry, Inc. 127 Park Street, NE Vienna, Virginia 22180 (703) 281-6613 MSS STANDARD PRACTICE SP-43 This MSS Standard Practice was developed under the consensus of the MSS Technical Committee 1 13 and the MSS Coordinating Committee. The content of this Standard Practice is the result of the effo

3、rts of competent and concerned volunteers to provide an effective, clear, and non-exclusive specification that will benefit the industry as a whole. This MSS Standar Practice is intended as a basis for common practice by the manufacturer, the user, and the general public. The existence of an MSS Sta

4、ndard 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 a code, specification, sales contract, or public law, as applicable. Unless otherwise specifically noted in this MSS

5、 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 B .) Any part o f this standard may be quoted Credit lines should read Extractedfiom, ABS-43-1991 (Reaflrmed 2001), with permissio

6、n 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 Valve and Fittings Industry, Inc. Originally Approved October, 1950 Copyright 1982 by Manufactu

7、rers Standardization Society of the Valve and Fittings industry, Inc. Printed in U.S.A. 1 FOREWORD ASME B16.9 is the American Standard for steel butt-welding fittings and although not so stated, it is implied that its scope deals primarily with the schedules of wall thicknesses which are common to c

8、arbon steel and the grades of alloy steel piping that are selected for pressure and temperature considerations. The rapid expansion of the process industries in the field of chemicals, plastics, textiles, etc., has created a demand for a class of pipe referred to as stainless piping, using this word

9、 in its generic sense. This field employs the use of the austenitic stainless steels and also nickel and its related alloys. This stainless piping is used with resistance to corrosion, elimination of product contamination, or combination of the two as the principle reason for material selection. Pre

10、ssure is seldom, if ever, a critical consideration. When pressure is a consideration reference is made to ASME B 16.9. Mechanical strength, resistance to vacuum, and economy,. are the most usual criteria in the selection of pipe thickness in this field, and for this reason the wall thicknesses emplo

11、yed in the field of corrosion resistant pipe are lighter than those in common usage with carbon steel piping. In 1949 ANSI approved standard B36.19 Stainless Steel Pipe in which a schedule of wall thickness was established and designated as Schedule 10s. Numerous companies were also using a wall thi

12、ckness lighter than Schedule 10s for services where contamination rather than corrosion was the prime consideration. These lighter wall thicknesses were designated Schedule 5s and the original 1950 edition of SP-43 established a series of Schedule 5s fittings. The 5s thicknesses were published in SP

13、-43 and were developed in cooperation with representatives of the various principal chemical companies and processing industries. In 1952 the Stainless Steel Pipe Standard B36.19 was revised to recognize the Schedule 5s wall thickness pipe as American Standard. The purpose of this standard is to pro

14、vide industry with a set of dimensional standards for butt-welding fittings that can be used with these light wall pipes of corrosion resisting materials. The center-to-end dimensions of all fittings are identical with those in ASME B16.9 which give to industry the advantage of uniform design room p

15、ractice and a maximum utilization of existing die equipment. The only departure from this is in the lap- joint stub end where for purposes of economy the face-to-end of the product has been reduced for use with thin wall piping. The advantage of longer center-to-end dimensions of the size 3/4 elbows

16、 resulted in the change in the tables to permit a gradual changeover, providing the manufacturers ample time to deplete existing stocks, re-tool and replenish stocks. The 199 1 revision of the SP was required to delete the metric equivalents. The 2001 Reaffirmation had no technical changes. There we

17、re minor editorial changes. The precedence of the longer dimensions for 3/4 elbows was made in accord with ASME B16.9. Referenced standards were brought up to date. The title of 180 degree returns was clarified. n MSS STB.MSS SP-43-ENGL 1771 S 577Clb 40 050143 7T4 S STANDARD PRACTICE SP-43 TABLE OF

18、CONTENTS SECTION PAGE FOREWORD i1 TABLE OF CONTENTS . 111 1 SCOPE . 1 2 REFERENCES 1 3 PRESSURE RATINGS 1 . 4 5 6 7 8 9 10 11 12 SIZE . 1 MARKING 1 MATERIALS . 2 METAL THICKNESS 2 FITTING DIMENSIONS . 2 TESTS . 2 TOLERANCES 2 WELDING BEVEL . 2 FINISH AND HEAT TREATMENT 2 TABLE 1 2 3 4 5 6 A l ANNEX

19、A B Tolerances 3 Dimensions of Long Radius Elbows 4 Dimensions of Straight and Reducing-on-the-Outlet Tees 5 Dimensions of Lap-Joint Stub Ends and Caps 7 Dimensions of Long Radius 180 Degree Returns . 8 Dimensions of Concentric and Eccentric Reducers . 9 Dimensions of Welded and Seamless Stainless S

20、teel Pipe 10 Dimensions of Welded and Seamless Stainless Steel Pipe . 10 List of Referenced Standards and Applicable Dates . 11 . lll MSS STD-MSS SP-43-ENGL 1941 E 5770b40 05UL144 A39 E STANDARD PRACTICE SP-43 WROUGHT STAINLESS STEEL, BUTT-WELDING FITTINGS 1. SCOPE 1.1 This Standard covers overall d

21、imensions, tol- erances, and markings for wrought stainless steel butt-welding fittings. In this standard tvroght is used to denote fittings made of pipe, tubing, plate, bar, sheet, strip or forgings. 1.2 This Standard covers only fittings made for use with Schedule 5s or 10s pipe as given in ASME B

22、36.19M, except that short pattern stub ends suitable for use with Schedule 40s are also shown. 1.3 Annex A. Table Al lists the dimensions of stainless steel pipe with which these fittings are intended to be used. I 2. REFERENCES 2.1 Standards and specifications adopted by ref- erence in this standar

23、d are shown in Annex B for convenience of identifjing edition number, date, and source of supply. 3. PRESSURERATINGS 3.1 Fittings produced under this standard shall carry the following ratings: Schedule 5s piping is not recommended for use at temperatures above I 400 FI. Temp F - 100 150 200 250 300

24、 350 400 450 500 550 600 650 700 750 PSI I os 275 255 240 225 210 195 180 165 150 140 130 120 I10 100 5s 225 215 200 190 175 165 150 - - - - - - - 3.2 Fabricated Tees employing intersection welds shall be considered in this standard and shall be rated at 70% of these ratings. 3.3 For fittings of sam

25、e pressure rating of match- ing pipe, refer to ASME B 16.9. t4. SIZE 4.1 The size of the fittings in Tables 1 through 6 and Annex A is identified by the corresponding nominal pipe she. 5. MARKING 5.1 Each fitting shall be marked to show the fol- lowing: a) Manufacturers name or trademark b) “CR” fol

26、lowed by the material identifica- tion symbol established for the respec- tive grade in the appropriate ASTM or AiSI specifications. Scheduie number or nominal wall thick- ness designation. c) d) Size 5.2 Where the size of fittings does not permit com- plete marking, the identification marks may be

27、omit- ted in the sequence specified in MSS SP-25. 5.3 Method of Marking - The manufacturers name or trademark, thickness, the grade identifica- tion symbol, and size shall be marked by any suit- able method not injurious to the fitting. 1 MSS STD=MSS SP-Li3-ENGL 1771 W 577flb40 050LtlLi5 777 STANDAR

28、D PRACTICE SP-43 6. 7. 8. 9. MATERIALS 6.1 Fittings made from AISI T y p e 304,304L, 347,316, and 316L are considered standard under this specification. Fittings to other speci- fications a available and should be made fiom material complying with the requirements of one of the recognized AISI analy

29、ses of ASTM specifications. METAL THICKNESS 7.1 As these fittings are to match pipe, the dimensions of the welding ends must conform with established pipe standards as to outside diameters and tolerances. The nominal wall thickness of the fittings shall be the same as the pipe to which it is welded,

30、 except that fit- tings with heavier walls may be butt welded to lighter wall pipe provided the heavier wall is tapered on the inside or outside to match the dimensions of the lighter pipe. FITTINGS DIMENSIONS 8.1 Inch dimensions for the fittings covered by this standard are given in Tables 1 throug

31、h 6. 8.2 One of the principals of this standard is the maintenance of a fixed position for weld- ing ends with reference to center line of the fit- tings or the overall dimensions as the case may be. 10. 11. TOLERANCES 10.1 Table 1 lists the tolerances for the fittings covered by this standard. WELD

32、ING BEVEL 1 1.1 Fittings furnished to this standard may be finished with ends cut square for wall thick- ness 0.12 in. or less, For wall thicknesses in excess of O. 12 in., they shall be beveled at 37 1 /2“ plus or minus 2 1 /2“; with root face (land) 0.06 in. plus or minus 0.03 in. 0.06 in. 5 0.03

33、in. T Welding Bevel for “T“ in excess of 0.1 2 in. 12. FINISH AND HEAT TREATMENT 12.1 The fittings shall be satisfactorily heat treated by an accepted practice, and adequately cleaned to insure maximum corrosion resis- tance. 9.1 Hydrostatic testing of fittings is not re- quired in this standark how

34、ever, fittings shall be capable of withstanding a hydrosatic test pressure one and one-haif times the pressure ratings shown in Subsection 3.1 for 1OOOF. 2 MSS STD-MSS SP-43-ENGL 1771 E 5770b40 OSOL44b b03 = STANDARD PRACTICE SP-43 v1 ro C .CI .5 a a O .- B v1 a u ln w 2 2 O O %D i z t : .- i - - a

35、v) VI in O +I +I +I +I +I +I c ! 223 c ! c ! 0 0; o O O m 08238 m m O O +I +I +I +I 8 +I 8 +I VI v) v) in v) in c ! c ! c ! c ! O O O O O +I +I +I +I +I +I ? o v) v) 00 00 v) In c ! c ! c? ? O +Ia 2 +I 2 O O +I +I +I “888 0 0 : o +I +I +I 85 o 8 +I +I +I is88888 o O 0; o 0 o +I +I +I +I +I +I m a m

36、o 0 % 2 8 8 O 0 O 0 o 0 W m 9 O +I +I +I +I +I +I 3 TABLE 2 DIMENSIONS OF LONG RADIUS ELBOWS Nominal Pipe Size 1 12 314 1 1-114 1-112 2 2-112 3 3-112 4 5 6 8 10 12 14 16 18 20 22 24 A and B Dimem Outside Diameter At Bevel 0.84 1 .O5 1.32 1.66 1.90 2.38 2.88 3.50 4.00 4.50 5.56 6.62 8.62 10.75 12.75

37、14.00 16.00 18.00 20.00 22.00 24.00 Center-to-End 90 -Deg Elbows A 1 S O 1 S O 1 S O 1.88 2.25 3.00 3.75 4.50 5.25 6.00 7.50 9.00 12.00 15.00 18.00 2 1 .o0 24.00 27.00 30.00 33.00 36.00 1s for size 34 may be as shown below 45-Deg Elbows B 0.62 0.75 0.88 1 .o0 1.12 1.38 1.75 2.00 2.25 2.50 3.12 3.75

38、5.00 6.25 7.50 8.75 10.00 1 1.25 12.50 13.50 15.00 a t the manufacturem option. I Center-to-End 1 I 90 Degree Elbows A 45 Degree Elbows B 1 I 0.44 1 1.12 I 4 MSS TABLE 3 DIMENSIONS OF STRAIGHT AND REDUCING- ON-THE-OUTLET TEES Dimenaions in inchei Nominal Pipe Si?& i/:! Straight 3 1 4 Straight 1/4 x

39、314 x 1/2 I Strright 1 x 1 x3/4 1 x 1 x 1/2 i-i/4 Straight l-i/4 x 144 x I I-114 I-l/4 3/4 I . 1 1 4 X I.I/4,x 1 1 2 1-112 Straight 1 . 1 1 2 x 1 . 1 1 2 x 1 . 1 1 4 1 . 1 1 2 x 1 . 1 1 2 x I 1 . 1 1 2 x 1 . 1 1 2 x 3/4 2 x 2 x 1-1/2 2 !hut 2 x 2 x 1-1/4 2X2Xl 2 x 2 x 3/4 2 . 1 1 2 Straight 2 . 1 1

40、2 x 2-1/2 x 2 2 . 1 1 2 x 2-1/2 x 1-1/2 2 . 1 1 2 x 2-112 x 1 3 Straifit 3 x 3 x 2-112 3 x 3 2 3 x 3 x 1 . 1 1 2 3-112 Std S1/2 x 3-112 x 3 3 . 1 1 2 x 3-112 x 2-112 3 . 1 1 2 x 3-1/2 x 2 3-1/2 x 3-1/2 x 1-1/2 2-1/22-1/2 x 1-1/4 4 Straight 4 x 4 x 3-1/2 4X4X3 4 x 4 x 2-112 4 x 4 2 4 x 4 x 1-112 5 St

41、raight 5X5X4 5 x 5 x 3-112 5 X 5 X 3 5 x 5 2 5 x 5 x 2-112 Nominul Outridc D 1 I I I K I ( Run 0.04 I .o5 I .o5 I .32 1 . 3 2 I .32 1-66 I .66 I .66 I .66 I .90 I .90 I .90 1.90 2.38 2.38 2.38 2.38 2.38 2.88 2.88 2.88 2.88 2.88 3.50 3.50 3.50 3.50 4.00 4.00 4.00 4.00 4.00 4.50 4.50 4.50 4.50 4.50 4.

42、50 5.56 5.56 5.56 5 . 5 6 5.56 5.56 - 7 t &vel Outlet 0.84 1 . 0 5 0.84 I .32 I .o5 0 . 8 4 I . 6 6 I .32 I .o5 0 . 8 4 I . 9 0 I .66 1 . 3 2 1 . o 5 2.38 I . 9 0 1-64 I .32 1 .o5 2.88 2.38 1 . 9 0 1 . 6 6 1.32 3.50 2.88 2 . 3 8 1 . 9 0 4 . 0 0 3.50 2 . 8 8 2.38 1 . 9 0 4.50 4 .o0 3.50 2.88 2.38 I .

43、90 5.56 4.50 4.00 3.50 2.88 2.38 - Center-teEnd - Run C I .o0 1 . 1 2 1 . 1 2 I .so I .so I .so 1.88 I .88 1 .88 2.25 2 . 2 5 2.25 2.25 2.50 2.50 2.50 2 . 5 0 2 . 5 0 3 . 0 0 3.00 3.00 3 .o0 3.00 3.38 3.38 3.38 3.38 3 . 7 5 3 . 7 5 3.75 3 . 7 5 . 3 . 7 5 4.12 4.12 4.12 4.12 4.12 4.12 4.88 4.88 4.88

44、4.88 4.88 4.88 - i .a8 3utlet M I .o0 1 . 1 2 1 . 1 2 I .so I .so 1 .so I .88 I .88 I .88 I .88 2 . 2 5 2 . 2 5 2 . 2 5 2.25 2.50 2.38 2.25 2.00 1 . 7 5 3.w 2 . 1 5 2 . 6 2 2 . 5 0 2 . 2 5 3 . 3 8 3 . 2 5 3 . 0 0 2.88 3.75 3.62 3.50 3.25 3.12 4.12 4.00 3 .88 3.75 3.50 3.38 4.98 4.62 4.50 4.38 4 . 2

45、5 4.12 - 5 STDmMSS SP-43-ENGL 1971 PI 577Ubq0 05034q9 312 I STANDARD PRACTICE SP-43 TABLE 3 DIMENSIONS OF STRAIGHT AND REDUCING- ON-THE-OUTLET TEES (Continued) Dimensions in inches Nominal Outside Nominal I Diameter at Bevel Pipe Size 6 Straight 6 x 6 5 6 x 6 4 6 x 6 3 8 Straight 8 x 8 6 8 x 8.x 5 8

46、 x 8 4 8 x 8 3-112 10 Straight l o x 10x8 10 x 10 x 6 1ox1ox5 10 x 10 x 4 12 Straight 12 x 12 x 10 12x 12x8 1 2 x 1 2 6 12 x 12 x 5 14 Straight 14 x 14 x 12 14 x 14 x 10 14 x 14 x 8 14 x 14 x 6 16 Straight 16 x 16 x 14 16 x 16 x 12 16 x 16 x 10 1 6 x 1 6 8 1 6 x 1 6 6 18 Straight 18 x 18 x 16 18 x 1

47、8 x 14 18 x 18 x 12 18 x 18 x 10 18 x 18 x 8 20 Straight 2 0 x 2 0 18 20 x 20 x 16 2 0 x 2 0 1 4 20X20X 12 20X20X 10 20 x 20 x 8 24 Straight 24 x 24 x 20 2 4 x 2 4 18 2 4 x 2 4 16 24 x 24 r 14 2 4 x 2 4 12 24 x 24 x 10 6 x 6 x 3-112 6 x 6 x 2-112 6.62 6.62 6.62 6.62 6.62 6.62 8.62 8.62 8.62 8.62 8.6

48、2 10.75 10.75 10.75 10.75 10.75 12.75 12.75 12.75 12.75 12.75 14.00 14.00 14.00 14.00 14.00 16.00 16.00 16.00 16.00 16.00 16.00 18.00 18.00 18.00 18.00 18.00 18.00 20.00 20.00 20.00 20.00 20.00 20.00 20.00 24.00 24.00 24.00 24.00 24.00 24.00 24.00 Outlet 6.62 5.56 4.50 4.00 3.50 2.88 8.62 6.62 5.56

49、4.50 4.00 10.75 8.62 6.62 5.56 4.50 12.75 10.75 8.62 6.62 5.56 14.00 12.75 10.75 8.62 6.62 16.00 14.00 12.75 10.75 8.62 6.62 18.00 16.00 14.00 12.75 10.75 8.62 20.00 18.00 16.00 14.00 12.75 10.75 8.62 24.00 20.00 18.00 16.00 14.00 12.75 10.75 Center-tc-End Run C 5.62 5.62 5.62 5.62 5.62 5.62 7.00 7.00 7.00 7.00 7.00 8.50 8.50 8.50 8.50 8.50 1 o. O0 10.00 10.00 10.00 10.00 11.00 11.00 11.00 11.00 11.00 12.00 12.00 12.00 12.00 12.00 12.00 13.50