MSS SP-95-2006 缩径管和圆堵头 Swage(d) Nipples and Bull Plugs

MSS SP-95-2006 www.mss-hq.org 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) 281-6671 e-mail: info@mss-hq.org Swage(d) Nipples and Bull Plugs MSS Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS - - ` , , ` ` ` , , , , ` ` ` ` - ` - ` , , ` , , ` , ` , , ` - - - MSS STANDARD PRACTICE SP-95 i This MSS Standard Practice was developed under the consensus of the MSS Technical Committee 105 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 common practice by the manufacturer, the user, and the general public. The existence of an MSS Standard Practice does not in itself preclude the manufac- ture, 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 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.) 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 appendi- ces appearing in this document are construed as "supplemental". Supplemental" information does not include mandatory requirements. Any part of this standard may be quoted. Credit lines should read `extracted from MSS SP-95, 2006 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 Valve and Fittings Industry Inc. Originally Approved March, 1986 Copyright ©, 2000 by Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. Printed in U.S.A. Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS --`,,```,,,,````-`-`,,`,,`,`,,`--- MSS STANDARD PRACTICE SP-95 ii TABLE OF CONTENTS SECTION PAGE 1 SCOPE ................................................................................................................................................. 1 2 PRESSURE RATINGS ....................................................................................................................... 1 3 SIZE ..................................................................................................................................................... 1 4 MARKING .......................................................................................................................................... 1 5 MATERIAL......................................................................................................................................... 2 6 DIMENSIONS..................................................................................................................................... 2 7 END PREPARATION......................................................................................................................... 2 8 SURFACE QUALITY......................................................................................................................... 2 9 DESIGN PROOF TEST ...................................................................................................................... 2 10 TESTING............................................................................................................................................. 3 TABLE 1 Swaged Nipple Dimensions, (inches)........................................................................................ 3,4,5 2 Bull Plug Dimensions, (inches) ....................................................................................................... 6 3 Tolerances, (inches)......................................................................................................................... 7 A1 Swaged Nipple Dimensions, (millimeters)................................................................................... 8,9 A2 Bull Plug Dimensions, (millimeters) ............................................................................................. 10 ANNEX A Referenced Standards and Applicable Dates ..................................................................................... 11 Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS --`,,```,,,,````-`-`,,`,,`,`,,`--- MSS STANDARD PRACTICE SP-95 iii FOREWORD This document establishes a Standard Practice for Swaged Nipples and Bull Plugs produced for a number of years by various manufacturers to varying dimensions although basically similar in principle. Users should note Swaged Nipples, and Bull Plugs furnished from existing stocks may have slightly different dimensions than shown herein. The values stated in either inch units or metric units are to be regarded separately as standard. Within the text, the metric units are shown in parenthesis. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. Tables 1 through 3 show fittings dimensional requirements in inches. Tables A1 and A2 show the dimensional requirements for millimeter dimensional fittings. Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS - - ` , , ` ` ` , , , , ` ` ` ` - ` - ` , , ` , , ` , ` , , ` - - - MSS STANDARD PRACTICE SP-95 SWAGED NIPPLES AND BULL PLUGS(1) 1. SCOPE 1.1 This Standard Practice covers dimensions, finish, tolerances, marking and material for carbon steel and alloy steel Swaged Nipples (male end reducing fittings), NPS 1/4 through NPS 12 and Bull Plugs (hollow or solid male closures) NPS 1/8 through NPS 12. These fittings are made with ends that are threaded, beveled, square cut, grooved, or any combination of these. Both concentric and eccentric Swaged Nipples are included. 1.2 Partial Compliance Fittings Fittings with special dimensions and fittings made from non-standard materials may be designed and manufactured by agreement between the manufacturer and the purchaser, provided they are marked in accordance with the requirements for partial compliance fittings of Section 4.1e. 2. PRESSURE RATINGS 2.1 The allowable working pressure for fittings designed in accordance with this Standard Practice shall be calculated as for straight seamless pipe of equal end preparation in accordance with the rules established in the applicable sections of ASME Code for Pressure Piping, B31. The pipe wall thickness and type material shall be that for which the fittings have been ordered. Fittings shall be identified by pipe wall thickness and material grade in lieu of pressure rating. 2.2 The design of fittings may be established by mathematical analyses contained in nationally recognized pressure vessel or piping codes, or at the manufacturer’s option, by proof testing in accordance with Section 9. Records of design or successful proof tests shall be available at the manufacturer’s facility for inspection by the purchaser. Bull Plugs shall meet the additional requirement that the minimum thickness of the head shall be at least 1.5 times the thickness of the corresponding pipe schedule. For Bull Plugs that are drilled and tapped, the minimum thickness of the head shall be increased to accommodate the minimum L2 thread length as specified in ASME B1.20.1 3. SIZE 3.1 Bull Plug size is identified by the “nominal pipe size” (NPS). Swaged Nipples are identified with the large end size listed first, followed by the small end size. (see Section 4.1d) 4. MARKING 4.1 Each fitting shall have the prescribed information stamped or otherwise suitably marked with the following: a) Manufacturer’s name or trademark b) Material Identification • Fittings shall be marked with the material grade in accordance with the applicable ASTM Fittings Specifications A 234, A 403, A 420 (e.g., WPB, WP304, WPL6) • The material lot or heat number traceable to the material shall be part of the material identification c) Schedule number or nominal wall thickness designation of Bull Plug. d) Size • Nominal pipe size (NPS) of Bull Plug • Nominal pipe size (NPS) – Large end X small end of Swaged Nipples – Example: 2 x 1 e) Product Conformance Fittings shall be marked with the symbol “SP95” to denote full conformance with this Standard Practice. Partial compliance fittings covered in Section 1.2 shall not be marked “SP95”. If marked with an ASTM designation, such marking shall be followed by the symbol “S58” as required by the “Supplementary Requirements” for Special Fittings in ASTM A 960. 4.2 Where size and shape of fittings do not permit all the above markings, they may be omitted in the reverse order given above. 4.3 Minimum permanent marking is the manufacturer’s name or trademark and the material grade. At the manufacturer’s option, all other marking may be permanent or applied on a pressure sensitive label. 4.4 Where steel stamps are used, care should be taken so that marking is not deep enough to reduce wall thickness of the fitting below minimum allowed. (1) Both “Swage” and “Swaged” are used in the industry. Only “Swaged” is used in the body of this Standard Practice. 1 Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS - - ` , , ` ` ` , , , , ` ` ` ` - ` - ` , , ` , , ` , ` , , ` - - - MSS STANDARD PRACTICE SP-95 2 5. MATERIAL 5.1 The steel for Swaged Nipples and Bull Plugs shall consist of forgings, round or hex bars or seamless pipe or tube which conform to the requirements of ASTM A 234, A 403, A 420 or the corresponding ASME Specification. When Swaged Nipples and Bull Plugs are made of materials other than those referenced in this Standard Practice, they should be appropriately marked as agreed upon between the manufacturer and purchaser. 6. DIMENSIONS 6.1 The dimensions of Swaged Nipples and Bull Plugs shall conform to Tables 1 or A1 and 2 or A2 respectively. Inch tolerances shall conform to Table 3. 7. END PREPARATION 7.1 Pipe ends may be threaded, beveled for butt- welding, square cut (plain) for socket welding, grooved, or any combination of these. 7.2 Threaded ends shall be in accordance with ASME B1.20.1. Threads shall be chamfered at the ends of the fitting to protect the first thread. The reference point for gauging threads is the last thread scratch on the chamfer cone. 7.3 Butt-welding ends shall be in accordance with ASME B16.25. 7.4 Grooved ends shall be by agreement between the manufacturer and purchaser. 8. SURFACE QUALITY 8.1 Fittings supplied under this specification shall be in accordance with surface quality requirements of ASTM A 234, A 403, or A 420. 9. DESIGN PROOF TEST 9.1 Proof tests shall be made as set forth herein, when the manufacturer chooses proof testing to qualify the fitting design. 9.2 Test Assembly 9.2.1 Fittings selected for testing shall be representative of production and shall meet all the requirements of this Standard Practice and the applicable material specification. The fittings shall be inspected for dimensional compliance to this Standard Practice. Full material specification test reports, including chemical analysis, tensile and hardness property results shall be included in the records of these proof tests. 9.2.2 Straight seamless or welded pipe sections, whose calculated bursting strength is at least as great as the computed proof test pressure as calculated in Section 9.3 shall be welded to each end of the fitting to be tested. Any internal misalignment greater than 0.06 inch (1.6 mm) shall be reduced by taper boring at a slope not over 1:3. Length of pipe sections for closures shall be at least twice the pipe outside diameter. 9.3 Test Procedure 9.3.1 The test fluid shall be water or other fluid used for hydrostatic testing. 9.3.2 Hydrostatic pressure shall be applied to the test assembly. The test is successful if the assembly withstands, without rupture, 105% of the computed test pressure defined below: D St P 2= Where: P = computed test pressure S = minimum tensile strength of the test fitting t = minimum wall thickness of the pipe that the fitting marking identifies D = specified outside diameter of the pipe Note: Any dimensionally consistent system of units may be used. 9.3.3 As an alternative, if the pipe ruptures, or if sufficient pressure to rupture a part of the assembly cannot be attained, the test pressure is acceptable if a final test pressure is at least 105 percent of the computed proof test pressure. 9.4 Applicability of Test Results It is not necessary to conduct an individual test of fittings with all combinations of sizes, wall thickness, end connections and grade of steel. A successful proof test on one prototype fitting may represent others to the extent described herein. 9.4.1 One test fitting may be used to qualify similar ones no smaller than one-half nor larger than two times the nominal pipe size of the test fitting. Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS - - ` , , ` ` ` , , , , ` ` ` ` - ` - ` , , ` , , ` , ` , , ` - - - MSS STANDARD PRACTICE SP-95 3 9.4.2 The untested fittings shall have a t/D ratio not less than one-half nor more than three times the t/D ratio of the test fitting. TESTING 9.4.3 The pressure retaining capacity of a fitting made of various grades of steel will be essentially directly proportional to the tensile properties of the various grades. Therefore, it is necessary to test a prototype in only a single grade to prove the geometric design of the fittings in other grades. 10. 10.1 Hydrostatic testing of fittings is not required in this Standard Practice. All fittings shall be capable of withstanding without leakage, a test pressure equal to that prescribed in the specification for the pipe of equal end preparation, with which the fitting’s marking identifies. TABLE 1 Swaged Nipples Dimensions in inches Outside Diameter Nominal Pipe Size (NPS) Large End Small End End To End "A" 1/4 x 1/8 0.540 0.405 2.25 3/8 x 1/8 0.675 0.405 2.50 3/8 x 1/4 0.675 0.540 2.50 1/2 x 1/8 0.840 0.405 2.75 1/2 x 1/4 0.840 0.540 2.75 1/2 x 3/8 0.840 0.675 2.75 3/4 x 1/8 1.050 0.405 3.00 3/4 x 1/4 1.050 0.540 3.00 3/4 x 3/8 1.050 0.675 3.00 3/4 x 1/2 1.050 0.840 3.00 1 x 1/8 1.315 0.405 3.50 1 x 1/4 1.315 0.540 3.50 1 x 3/8 1.315 0.675 3.50 1 x 1/2 1.315 0.840 3.50 1 x 3/4 1.315 1.050 3.50 Outside Diameter Nominal End Pipe To Large Small Size End End End (NPS) "A" 1-1/4 x 1/8 1.660 0.405 4.00 1-1/4 x 1/4 1.660 0.540 4.00 1-1/4 x 3/8 1.660 0.675 4.00 1-1/4 x 1/2 1.660 0.840 4.00 1-1/4 x 3/4 1.660 1.050 4.00 1-1/4 x 1 1.660 1.315 4.00 1-1/2 x 1/8 1.900 0.405 4.50 1-1/2 x 1/4 1.900 0.540 4.50 1-1/2 x 3/8 1.900 0.675 4.50 1-1/2 x 1/2 1.900 0.840 4.50 1-1/2 x 3/4 1.900 1.050 4.50 1-1/2 x 1 1.900 1.315 4.50 1-1/2 x 1-1/4 1.900 1.660 4.50 Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS - - ` , , ` ` ` , , , , ` ` ` ` - ` - ` , , ` , , ` , ` , , ` - - - MSS STANDARD PRACTICE SP-95 4 TABLE 1 Swaged Nipples (Continued) Dimensions in inches Outside Diameter Nominal Pipe Size (NPS) Large End Small End End To End “A” 2 x 1/8 2.375 0.405 6.50 2 x 1/4 2.375 0.540 6.50 2 x 3/8 2.375 0.675 6.50 2 x 1/2 2.375 0.840 6.50 2 x 3/4 2.375 1.050 6.50 2 x 1 2.375 1.315 6.50 2 x 1-1/4 2.375 1.660 6.50 2 x 1-1/2 2.375 1.900 6.50 2-1/2 x 1/8 2.875 0.405 7.00 2-1/2 x 1/4 2.875 0.540 7.00 2-1/2 x 3/8 2.875 0.675 7.00 2-1/2 x 1/2 2.875 0.840 7.00 2-1/2 x 3/4 2.875 1.050 7.00 2-1/2 x 1 2.875 1.315 7.00 2-1/2 x 1-1/4 2.875 1.660 7.00 2-1/2 x 1-1/2 2.875 1.900 7.00 2-1/2 x 2 2.875 2.375 7.00 3 x 1/8 3.500 0.405 8.00 3 x 1/4 3.500 0.540 8.00 3 x 3/8 3.500 0.675 8.00 3 x 1/2 3.500 0.840 8.00 3 x 3/4 3.500 1.050 8.00 3 x 1 3.500 1.315 8.00 3 x 1-1/4 3.500 1.660 8.00 3 x 1-1/2 3.500 1.900 8.00 3 x 2 3.500 2.375 8.00 3 x 2-1/2 3.500 2.875 8.00 Outside Diameter Nominal End Pipe To Large Small Size End End End (NPS) “A” 3-1/2 x 1/8 4.000 0.405 8.00 3-1/2 x 1/4 4.000 0.540 8.00 3-1/2 x 3/8 4.000 0.675 8.00 3-1/2 x 1/2 4.000 0.840 8.00 3-1/2 x 3/4 4.000 1.050 8.00 3-1/2 x 1 4.000 1.315 8.00 3-1/2 x 1-1/4 4.000 1.660 8.00 3-1/2 x 1-1/2 4.000 1.900 8.00 3-1/2 x 2 4.000 2.375 8.00 3-1/2 x 2-1/2 4.000 2.875 8.00 3-1/2 x 3 4.000 3.500 8.00 4 x 1/4 4.500 0.540 9.00 4 x 3/8 4.500 0.675 9.00 4 x 1/2 4.500 0.840 9.00 4 x 3/4 4.500 1.050 9.00 4 x 1 4.500 1.315 9.00 4 x 1-1/4 4.500 1.660 9.00 4 x 1-1/2 4.500 1.900 9.00 4 x 2 4.500 2.375 9.00 4 x 2-1/2 4.500 2.875 9.00 4 x 3 4.500 3.500 9.00 4 x 3-1/2 4.500 4.000 9.00 Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS - - ` , , ` ` ` , , , , ` ` ` ` - ` - ` , , ` , , ` , ` , , ` - - - MSS STANDARD PRACTICE SP-95 5 TABLE 1 Swaged Nipples (Continued) Dimensions in inches Outside Diameter Outside Diameter Nominal End Nominal End Pipe To Pipe To Large Small Large Small Size End Size End End End End End (NPS) “A” (NPS) "A" 5 x 1/4 5.563 0.540 11.00 8 x 1 8.625 1.315 13.00 5 x 3/8 5.563 0.675 11.00 8 x 1-1/4 8.625 1.660 13.00 5 x 1/2 5.563 0.840 11.00 8 x 1-1/2 8.625 1.900 13.00 5 x 3/4 5.563 1.050 11.00 8 x 2 8.625 2.375 13.00 5 x 1 5.563 1.315 11.00 8 x 2-1/2 8.625 2.875 13.00 5 x 1-1/4 5.563 1.660 11.00 8 x 3 8.625 3.500 13.00 5 x 1-1/2 5.563 1.900 11.00 8 x 3-1/2 8.625 4.000 13.00 5 x 2 5.563 2.375 11.00 8 x 4 8.625 4.500 13.00 5 x 2-1/2 5.563 2.875 11.00 8 x 5 8.625 5.563 13.00 5 x 3 5.563 3.500 11.00 8 x 6 8.625 6.625 13.00 5 x 3-1/2 5.563 4.000 11.00 10 x 2 10.750 2.375 15.00 5 x 4 5.563 4.500 11.00 10 x 2-1/2 10.750 2.875 15.00 6 x 1/2 6.625 0.840 12.00 10 x 3 10.750 3.500 15.00 6 x 3/4 6.625 1.050 12.00 10 x 3-1/2 10.750 4.000 15.00 6 x 1 6.625 1.315 12.00 10 x 4 10.750 4.500 15.00 6 x 1-1/4 6.625 1.660 12.00 10 x 5 10.750 5.563 15.00 6 x 1-1/2 6.625 1.900 12.00 10 x 6 10.750 6.625 15.00 6 x 2 6.625 2.375 12.00 10 x 8 10.750 8.625 15.00 6 x 2-1/2 6.625 2.875 12.00 12 x 2 12.750 2.375 16.00 6 x 3 6.625 3.500 12.00 12 x 2-1/2 12.750 2.875 16.00 6 x 3-1/2 6.625 4.000 12.00 12 x 3 12.750 3.500 16.00 6 x 4 6.625 4.500 12.00 12 x 3-1/2 12.750 4.000 16.00 6 x 5 6.625 5.563 12.00 12 x 4 12.750 4.500 16.00 12 x 5 12.750 5.563 16.00 12 x 6 12.750 6.625 16.00 12 x 8 12.750 8.625 16.00 12 x 10 12.750 10.750 16