1、Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 5523, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Docu
2、ment Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 4710 DISTRIBUTION STATEMENT A Approved for public release; distribution unlimited 7 . THIS DOCUMENT CONTAINS /a PAGES. ” MIL-P-24691 23 September 1987 SUPERSEDING (See 6.3) MILITARY SPECIFICATIO
3、N PIPE AND TUBE, CARBON, ALLOY AND STAINLESS STEEL, SEAMLESS AND WELDED, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers carbon, alloy, and stainless steel seamless and welded
4、 pipe and tube. 1.2 Classification. The carbon, alloy and stainless steel seamless and welded pipe and tube shall be of the giades and types specified in the detail specification (see 6.2.1). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following specific
5、ations and stan- dards form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and the supplement thereto, cited in the s
6、olicitation. SPECIFICATIONS FEDERAL PPP-B-60 1 - Boxes, Wood, Cleated-Plywood. PPP-B-621 - Boxes, Wood, Nailed and Lock-Corner. PPP-B-1055 - Barrier Material, Waterproofed, Flexible. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-VIL-P-24b71 47 M 77
7、7770b 0275327 L m MIL-P-24691 MILITARY MIL-P-1 16 - Preservation, Methods of. MIL-B-1 2 1 - Barrier Material, Greaseproofed, Waterproofed, MIL-P-24691/1 - Pipe and Tube, Carbon Steel, Seamless. MIL-P-24691/2 - Pipe and Tube, Chromium-Molybdenum Steel, Seam- less. MIL-P-24691/3 - Pipe and Tube, Corro
8、sion-Resistant, Stainless Steel, Seamless or Welded. Flexible. STANDARDS FEDERAL FED-STD-183 - Continuous Identification Marking of Iron and Steel Products. MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes. MIL-STD-129 - Marking for Shipment and Storage. MIL-STD-271
9、 - Requirements for Nondestructive Testing Methods. MIL-STD-792 - Identification Marking Requirements for Special Purpose Components. (Copies of specifications and standards required by contractors in connec- tion with specific acquisition functions should be obtained from the contracting activity o
10、r as directed by the contracting activity.) 2.2 Other publications. The following documents form a part of this speci- fication to the extent specified herein. Unless .otherwise specified, the issues of the documents which are DoD adopted shall be those 1isted.in the Issue of the DoDISS specified in
11、 the solicitation. Unless otherwise specified, the issues of documents not listed in the DoDISS shall be the issue of the nongovernment docu- ments which is current on the date of the solicitation. AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) B36.10 - Welded and Seamless Wrought Steel Pipe. (Applica
12、tion for copies otherwise, this test may be conducted in one circumferential direction only. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-P-24691 47 m 9999906 0275334 5 MIL-P-24691 4.5.3.2 Calibration. Pipe and tube shall be ultrasonically
13、tested at a frequency and wave angle capable of detecting inside and outside surface discon- tinuities and subsurface defects. The calibration standard shall be made from ultrasonically defeet-free pipe of the same type, wall thickness, and od as the pipe to be tested. This standard shall contain tw
14、o longitudinal notches, one on the inside surface (except for pipe less than 1/2 inch od) and one on the outside surface sufficiently separated that readily distinguishable individual indications are obtainable from each notch. The notches shall have a depth equal to 5 percent of the wall thickness
15、or 0.005 inch, whichever is greater; the notch lengths shall not exceed 1/2 inch for wall thicknesses 0.065 inch and less, and shall not exceed 1 inch for wall thicknesses greater than 0.065 inch. The notch which produces the smaller indication shall be adopted as the the indication from the calibra
16、tion standard is at least 50 percent but less than 100 percent of full screen height or of the initial ultrasonic pulse, whichever is closer to the calibration indications. These settings shall be made under identical conditions of scanning speed, couplant, and search unit alignment with respect to
17、the pipe and using the same search unit and the same test fixturing as will be used in quality conformance testing of the pipes. = calibration standard. Ult,rasonic instrument settings shall be made such that 4.5.3.2.1 Recalibration. During quality conformance testing, any realign- ment of the searc
18、h unit with respect to the pipe, or any change in search unit, couplant, instrument settings, or scanning speed from that used for calibration shall require recalibration. 4.5.3.2.2 Test method. The tube, the search unit, or both the tube and the search unit shall be moved uniformly during testing i
19、n such a manner that the search unit motion relative to the pipe describes a helix concentric with the tube so that each pass of the scanning crystal overlaps the previous pass by not less than 20 percent of the width of the crystal. This scanning shall be done at the same couplant, search unit alig
20、nment and instrument settings as were used during calibration. 4.5.4 Rejection. Any pipe or tube which produces an indication equal to or greater than 100 percent of the indication from the calibration standard shall be rejected. 4.6 Inspection of packaging. Sample packages and packs, and the inspec
21、tion of the preservation-packaging, packing and marking for shipment and storage shall be in accordance with the requirements of section 5 and the documents specified therein. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-24b7L 47 m 777770b
22、 0275335 7 m MIL-P-24691 5. PACKAGING (The packaging requirements specified herein apply only for direct Govern- ment acquisition.) 5.1 Preservation and packagine Preservation and packaging, shall be level A or C as specified (see 6.2.1). 5.1.1 Level A. Cleaning, drying and preservation-packaging sh
23、all conform to the applicable processes, procedures and methods of MIL-P-116. (a) Carbon steel pipe or tube shall be coated inside and out with (b) Stainless steel pipe or tube shall be unit protected in accor- type P-19 preservative in accordance with method I of MIL-P-116. dance with method III of
24、 MIL-P-116. 5.1.2 Level C. Preservation-packaging shall afford protection against corrosion, deterioration and physical damage during shipment from the supply source to the first receiving activity for immediate use. The coutractors normal preservation-packaging methods may be utilized when such mee
25、ts the requirements of this level. 5.2 Packing. Packing shall be level A, B, or C, as specified (see 6.2.1). 5.2.1 General requirements. Pipes shall be segregated by class, size, and lot, and shall be packed in acxrdance with the level specified using pipe bundle sizes as follows: (a) Pipe with a 2-
26、inch od and under shall be bundled in quantities (b) Pipe over 2 inches in od shall be bundled in quantities of 11 of 30 pipes per bundle. pipes per bundle. 5.2.2 Level A. Pipe, preserved and packaged as specified (see 6.2.1) and in the quantity required (see 5.2.1), shall be packed in cleated bundl
27、es. Prior to fabricating the cleated bundle, the quantity of pipe shall be completely wrapped, including the ends of the load, with an inner wrap of barrier material conforming to type I, grade A, class 1 of MIL-B-121 and an outer wrap of barrier material conforming to class El, E2, L-2, L-4, or M-1
28、 of PPP-B-1055. As an alter- native to the two types of waterproof material required, any two combinations of the listed types of-PPP-B-1055 may be used. The wrapped pipe shall be steel strapped over nominal 2- by 6-inch wood cleats positioned approximately 2 feet from each end of the bundle. Unit l
29、oads (bundles) exceeding 10 feet in length shall be provided with an additional cleat band located equidistant from the end cleat bands. Two parallel girthwise coated or galvanized flat steel straps 1-1/4 by 0.035 inch or equivalent round steel wire shall be tension tied over each cleat band. Galvan
30、ized corner protectors shall be required over end grain of cleats when round wire strapping is used. Cleats may be staggered to permit stacking. The ends of the unit load shall be completely covered with barrier material conforming to type I of MIL-B-121 and overwrapped with burlap (weight basis 7.5
31、 ounces per 40-inch width). The protective end cover shall be secured in place with two parallel bands of steel strapping (see figure 1). 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-24691 5.2.2.1 As an alternative to cleated bundles, pipe
32、 completely wrapped as specified in 5.2.2 may be packed in containers conforming to either of the following specifications at the option of the contractor: Specification PPP-B-601 Type, class or style Overseas type PPP-B-62 1 Class 1 Container closure shall be as specified in the applicable containe
33、r specification or appendix thereto. Boxes shall be modified by the addition of wood skids in accordance with the applicable box specification. 5.2.3 Level B. Pipe or tube, preserved and packaged as specified (see 6.2.1) and in the quantity required (see 5.2.1), shall be packed in cleated bundles (s
34、ee figure 1) as specified for level A except that the full length inner and outer wraps may be omitted. Ends of the unit load shall be wrapped as specified under level A. 5.2.4 Level C. Pipe or tube, preserved and packaged as specified (see 6.2.1) and in the quantity required (see 5.2.1), shall be p
35、acked in containers acceptable to the common carrier which will ensure safe delivery at the desti- nation in a satisfactory condition at the lowest applicable rate. Containers, packing or method of shipment shall conform to Uniform Freight or National Motor Freight Rules or Regulations or other carr
36、ier rules applicable to the mode of transportation. 5.3 Marking. In addition to any special marking required (see 6.2.1), ship- ments shall-be marked in accordance with MIL-STD-129. 5.4 Special requirements. A copy of the certificate of quality conformance, when required (see 4.2 and 6.2.2) shall be
37、 placed in a waterproof, greaseproof bag or envelope, identified as to contents, and placed in the bundle in such a manner as to prevent loss or damage to the certificate during shipment or storage. 6. NOTES 6.1 Intended use. Steel pipes and tubes are intended for various services such as oil, water
38、, steam and gas. 6.2 Ordering data. 6.2.1 Acquisition requirements. Acquisition documents should specify the following: (a) Title, number and date of this specification. (b) Title, number and date of the applicable detail specification. (c) Type and grade required by the applicable detail specificat
39、ion (d) If stainless steel pipe or tube is to be made by other than the (e) Dimensions of tubing and whether pipe or tube is required (see 1.2). electric furnace process (see 3.2). (see 3.3). 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-P-2L
40、IbSL 47 H 9999906 0275337 O 6- MIL-P-24691 (f) If pipe or tube is to be used for steam lines (see 3.6). (g) If an alternate soundness inspection is to be used and the (h) If pipe or tube is to be ultrasonically inspected (see 4.5.3). (i) If shear wave test is to be conducted in two opposite circum-
41、(j) Level of preservation, packaging and packing (see 5.1, 5.2, (k) Special marking required (see 5.3). method (see 3.7). ferential directions (see 4.5.3.1). 5.2.2, 5.2.3 and 5.2.4). 6.2.2 Data requirements. When this specification is used in an acquisition and data are required to be delivered, the
42、 data requirements identified below shall be developed as specified by an approved Data Item Description (DD Form 1664) and delivered in accordance with the approved Contract Data Requirements List (CDRL), incorporated into the contract. When the provisions of DoD FAR Supplement, Part 27, Sub-Part 2
43、7.475-1 (DD Form 1423) are invoked and the DD Form 1423 is not used, the data specified below shall be delivered by the contractor in accordance with the contract or purchase order requirements. Deliverable data required by this specification are cited in the following paragraph. Paragraph no. Data
44、requirement title Applicable DID no. Option 4.2.1 and 5.4 Certification data/report UDI-A-23264 “ (Data item descriptions related to this specification, and identified in -section 6 will be approved and listed as such in DoD 5010.12-L., AMSDL. Copies of data item descriptions required by the contrac
45、tors in connection with specific acquisition functions should be obtained from the Naval Publications and Forms Center or as directed by the contracting officer.) 6.2.2.1 The data requirements of 6.2.2 and any task in sections 3, 4, or 5 of this specification required to be performed to meet a data
46、requirement may be waived by the contracting/acquisition activity upon certification by the offeror that identical data were submitted by the offeror and accepted by the Government under a previous contract for identical item acquired to this specification. This does not apply to specific data which
47、 may be required for each contract regardless of whether an identical item has been supplied previously (for example, test reports). 6.3 Supersession data. This specification supersedes MIL-T-20157, MIL-T-18162 and MIL-P-1144. 6.3.1 Cross reference. The grades and types in this specification are lis
48、ted in table II. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE II. Superseded specification MIL-T20157 MIL-T-18165 Class 1 YClass 2 Grade 304 Grade 304L Grade 316 Grade 316L Grade 321 Grade 347 Type II Type I MIL-P-24691 Specification cros
49、s reference data. Replacement specification MIL-P-24691/1 Grade A Grade B MIL-P-2469112 Grade P5 Grade Pl 1 Grade P22 piIL-P-24691/3 Grade TP 304 Grade TP 304L Grade TP 304N Grade TP 316 Grade TP 316L Grade TP 316N Grade TP 317 Grade TP 317L Grade TP 321 Grade TP 347 Type 1.1 Type 1 - 1/ No longer used. Delete from specification. 6.4 Subject term (key word) listing. Chromium-molybdenum steel Corrosion resistant Hydrostatic inspection Shear wave test Ultrasonic in
