1、INCH-POUND MIL-DTL-52618F 12 April 2012 SUPERSEDING MIL-DTL-52618E 25 November 2002 DETAIL SPECIFICATION FITTINGS, PIPE, ALUMINUM-ALLOY THREADED, 150-POUND, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of the Department of Defense. 1 SCOPE 1.1 Scop
2、e. This specification covers aluminum-alloy threaded pipe fittings, 150-pound class. 1.2 Part or Identifying Number (PIN). The PIN consists of the letter M, the specification number, a dash, letter for configuration, a number for fitting size, a letter for thread direction, and a letter for finish t
3、ype. M 52618/1 - A 04 X A PIN example: M52618/1-A04XA indicates a 90 elbow for a 1/2 inch pipe, right hand threads, and finish is “as cast”. AMSC N/A FSC 4730 Comments, suggestions, or questions on this document should be addressed to: DLA Land and Maritime, Attn: VAI, P.O. Box 3990, Columbus, OH 43
4、218-3990, or emailed to FluidFlowdla.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. Finish code letter Thread direction code letter Size code number Configuration code letter M
5、 Prefix Specification sheet number Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-52618F 2 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section doe
6、s not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sec
7、tions 3, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues
8、 of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATION MIL-A-8625 - Anodic Coatings for Aluminum and Aluminum Alloys. DEPARTMENT OF DEFENSE STANDARD MIL-STD-130 - Identification Marking of US Military Property. (See supplement 1 for list of specifica
9、tion sheets.) (Copies of these documents are available online at https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The following documents form a part of this docume
10、nt to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. ASME INTERNATIONAL ASME B1.20.1 - Pipe Threads, General Purpose (Inch) ASME B16.3 - Malleable Iron Threaded Fittings Classes 150 and 300 (Copies of these docu
11、ments are available online at http:/www.asme.org or from the ASME International, Three Park Avenue, New York, NY 10016-5990.) ASTM INTERNATIONAL ASTM B26/B26M - Standard Specification for Aluminum-Alloy Sand Castings ASTM B108/B108M - Standard Specification for Aluminum-Alloy Permanent Mold Castings
12、 ASTM B210 - Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes ASTM B211 - Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire ASTM B221 - Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes Provided by
13、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-52618F 3 (Copies of these documents are available online at http:/www.astm.org or from the ASTM International, P.O. Box C700, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) INTERNATIONAL ORGANIZ
14、ATION FOR STANDARDIZATION (ISO) ISO 17025 - General requirements for the competence of testing and calibration laboratories (Copies of these documents are available online at www.ansi.org or from the ANSI Customer Service Department, 25 W. 43rdStreet, 4thFloor, New York, NY 10036.) NATIONAL CONFEREN
15、CE OF STANDARDS LABORATORIES (NCSL) NCSL Z540.3 - Requirements for the Calibration of Measuring and Test Equipment (Copies of these documents are available online at http:/www.ncsli.org or from NCSL International 2995 Wilderness Place, Suite 107 Boulder, Colorado 80301-5404.) 2.4 Order of precedence
16、. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, (except for related specification sheets), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and r
17、egulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Specification sheets. The individual item requirements shall be as specified herein and in accordance with the applicable specification sheet. In the event of any conflict between the requirements of this specification and
18、 the specification sheet, the latter shall govern. 3.2 Description. The threaded aluminum pipe fittings, hereinafter referred to as “fittings” shall be of the 150-pound class. Fittings specified herein shall include crosses, tees, 90 and 45 elbows, couplings, reducers, return bends, reducing crosses
19、, tees and elbows, caps, plugs, bushings, and street elbows. 3.2.1 Intended use. Intended use is with water, oil, or air 150 psi (1.03 MPa) max at 72F (22C). 3.3 Material. Material shall be as specified herein. Materials not specified shall be selected by the contractor and shall be subject to all p
20、rovisions of this specification. 3.3.1 Recovered materials. For the purpose of this requirement, recovered materials are those materials that have been collected from solid waste and reprocessed to become a source of raw materials, as distinguished from virgin raw materials. The components, pieces a
21、nd parts incorporated in the fittings may be newly fabricated from recovered materials to the maximum extent practicable, provided the fittings produced meets all other requirements of this specification. Used, rebuilt or remanufactured components, pieces and parts shall not be incorporated in the f
22、ittings. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-52618F 4 3.3.2 Fabrication. The fittings shall be fabricated from aluminum-alloy castings in accordance with ASTM B26/B26M or ASTM B108/B108M, alloy 356.0-T6, except that the fittings l
23、isted below shall be aluminum fabricated from wrought products indicated herein: a. All fittings, size 1/4 inch through 1 inch, shall be drawn aluminum tube in accordance with ASTM B210 alloy 6061-T6. b. All fittings, size 1-1/4 inch through 4 inches, shall be extruded aluminum tube in accordance wi
24、th ASTM B221 alloy 6061-T6. c. All plugs, size 1/8 inch through 1/2 inch, shall be aluminum rod in accordance with ASTM B211 alloy 6061-T6. 3.4 Design and dimensions. Fittings shall be in accordance with the applicable specification sheets, see supplement 1. 3.4.1 Design and tolerances. The design a
25、nd tolerances of the fittings shall be in accordance as specified herein and applicable specification sheets. 3.4.2 Threads. All threads shall be in accordance with American National Standard Taper Pipe Thread (NPT) in accordance with ASME B1.20.1, except that couplings, wrought caps, and wrought bu
26、shings in sizes 1/2 inch and under may be American National Standard Straight Pipe (NPSC) thread in accordance with ASME B1.20.1. Thread length, depth, variation in alignment, countersinking, and chamfering shall be as specified in ASME B16.3. 3.5 Proof pressure. The fittings shall withstand an inte
27、rnal air pressure of 90 pounds per square inch gauge (psig) (0.62 MPa) and an internal hydrostatic pressure of 250 psig (1.72 MPa) without leaking or sweating (see 4.5.3). 3.6 Finish. When specified (see 6.2), fittings shall be anodized in accordance with MIL-A-8625, type II, class 1, thickness no l
28、ess than 0.0004 inch (10m) for castings and no less than 0.0007 inch (18m) for wrought products. 3.7 Identification marking. The pipe fittings shall be identified and marked in accordance with MIL-STD-130. 3.8 Cleanliness. All fittings shall be free of oil, grease, dirt, moisture, cleaning solvents
29、and foreign materials both internally and externally. 3.9 Workmanship. The finish of cast and extruded fittings shall be workmanlike and free of burrs, sharp edges, and corners. The fittings shall be free of sand and scale, inclusions, fins, gate protrusions, cracks, shrinks, and other injurious def
30、ects. There shall be no cold shunts, blowholes, porosity, or any other defects that may affect serviceability. 4. VERIFICATION 4.1 Classification of inspection. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.3) b. Conformance inspection (se
31、e 4.4). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-52618F 5 4.2 Test equipment and inspection facilities. Test and measuring equipment and inspection facilities of sufficient accuracy, quality, and quantity to permit performance of the r
32、equired inspection shall be established and maintained or identified by the contractor. The establishment and maintenance of a calibration system to control the accuracy of the measuring and test equipment shall be in accordance with ISO 17025 and NCSL Z540.3 as applicable. 4.2.1 Responsibility for
33、inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or order, the contractor may use his own or any other facilities suitable for
34、the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed
35、requirements. 4.2.3 Lot records. Manufacturers shall keep lot records for 3 years minimum. Manufacturers shall monitor for compliance to the prescribed procedures, and observe that satisfactory manufacturing conditions and records on lots are maintained for these fittings. The records, including as
36、a minimum, an attributes summary of all quality conformance inspections conducted on each lot, shall be available to review by customers at all times 4.3 First article inspection. When specified in the contract or purchase order (see 6.2), samples that are representative of the production item shall
37、 be subjected to first article inspection after the Government has awarded the contract. First article inspection shall be performed in accordance with table I to determine whether the production items meet the requirements of this specification. TABLE I First article inspection. Test Requirement pa
38、ragraph Test paragraph Visual 3.1, 3.3.2, 3.4, 3.6, 3.7, 3.8, and 3.9 4.5.1 Threads 3.4.2 4.5.2 Proof test (Air) 3.5 4.5.3.1 Proof test (Hydrostatic) 3.5 4.5.3.2 Finish 3.6 4.6 4.3.1 Responsibility for compliance. All items shall meet all requirements of sections 3, 4, or 5. The inspection set forth
39、 in this specification shall become a part of the contractors overall inspection system. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply
40、with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government
41、to acceptance of defective material. 4.3.1.1 Waivers or deviations to specification requirements. All waivers or deviations to specification requirements shall be coordinated through the preparing activity; DLA Land and Maritime, Attn: VAI, P.O. Box 3990, Columbus, OH 43218-3990, or emailed to Fluid
42、flowdla.mil. 4.3.1.2 Failures. All samples shall meet all of the contract requirements. Failure of a sample unit to pass any test shall be cause for rejection of the entire lot and refusal to grant first article approval. Provided by IHSNot for ResaleNo reproduction or networking permitted without l
43、icense from IHS-,-,-MIL-DTL-52618F 6 4.3.2 Disposition of first article samples. Unless otherwise specified, after award of the contract or order, the manufacturer shall forward one fitting, selected randomly from a sample lot. The sample shall be representative of the construction, workmanship, com
44、ponents, and materials to be used during production. When a manufacturer is in continuous production fittings from one contract to another, submission of additional first article samples for a new contract may be waived at the discretion of the acquiring activity (see 6.2). 4.3.3 First article infor
45、mation. Upon completion of first article inspection, the Government activity responsible for conducting the inspection program (see 6.2), shall report the results of the inspection, with appropriate recommendation, to the contracting officer. Approval of the first article samples or the waiving of f
46、irst article inspection does not preclude the requirements for performing conformance inspection. 4.4 Conformance inspection. Conformance inspection shall consist of the examinations and tests specified in table III performed on individual products or lot samples to determine conformance of the prod
47、ucts or lots with the requirements of this specification. 4.4.1 Sample size. Sampling for examination and tests shall be in accordance with table II. The sample shall be taken at random from a production run and shall be produced with equipment and procedures normally used in production. A lot shall
48、 be accepted when 0 defects are found, and rejected when 1 or more defects are found. TABLE II. Inspection sample. Production lot size Sample size 1 1 2 to 8 2 9 to 15 3 16 to 25 5 26 to 50 8 51 to 90 13 91 to 150 20 151 to 280 32 281 to 500 50 501 to 1,200 80 1201 to 3,200 125 3201 to 10,000 200 10
49、,001 to 35,000 315 4.4.2 Individual inspection. For manufacturers that have successfully passed first article inspections and are continuously producing fittings to this specification, ongoing inspections shall consist of individual inspections, see table III. Each production of fittings shall be subjected to the examinations and tests in accordance with table III. Provided by IHSNot for ResaleNo reproduction or networking permitted
