NAVY MIL-H-24580 (2)-1985 HOSE ASSEMBLIES SYNTHETIC RUBBER NONCOLLAPSIBLE FIRE FIGHTING《合成橡胶不可折叠消防管道组装》.pdf

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1、I I i 1 1- 1 # I- MIL-H-ZV580 (2) 92 - 7777706 0232732 2 - .M%L-H-24580( SH) AMENDMENT 2 21 May 1985 SUPERSEDING AMENDMENT 1 15 May 1981 -.- - MILITARY SPECIFICATION HOSE ASSEMBLIES, SYNTHETIC RUBBER, NONCOLLAPSIBLE, FIRE FIGHTING This amendment forms a part of Military Specification MIL-H-245SO(SH)

2、 dated 25 September 1978 and is approved for use by the Naval Sea Systems Command, Department of the Navy and is available for use by all Depart- ments and Agencies of the Department of Defense. PAGE 1 * 2.1: Delete and substitute: . “2.1 Government documents. - - - - - “2.1.1 Specifications and sta

3、ndards. Unless otherwise speciEied the following specifications and standards of the issue listed in that issue of the - Department of Defense Index of SpecificatLons and Standards (DODISC) specified in the solicitation, form a part of this specification to the extent specified herein. SPECIFICATION

4、S - MILITARY MIL-P-775 I - Packaging of Hose, Hose Assemblies, Rubber, Plastic, Fabric, or Metal (including tubing), and Fittings, Nozzles and Strainers. MIL-S-23190 - Straps, Clamps and Mounting Hardware, Plastic for Cable Harness Tying and Support. STANDARDS FEDERAL FED-STD-H28/10 - Screw-Thread S

5、tandards for Federal Services, Section 10 American National Hose Coupling and Fire Hose Coupiing Threads.“ FED-STD-162 - Hose, Rubber, Visual Inspection Guide for. -. . - -. . PSC 4210 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-29580 (2) 9

6、2 W 777790b 0232733 9 W MIL-H-24580(SH) AMENDMENT 2 1 * c STANDARDS - Continued MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes.“ Insert “Beneficial comments“ at bottom of page: beneficial comments (recommendations, addirions, deletions) and any pertinent data whic

7、h 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 Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by le

8、tter. PAGES 1 and 2 2.2: Add the following ASTM publications: “B 16 - Rod Bar, and Shapes for Use inScrew Machines Free-Cutting Brass. (DoD adopted) B 36 - Brass Plate, Sheet, Strip, and Rolled Bar. (DoD adopted) B 121 - Leaded Brass Plate, Sheet, Strip, and Rolled Bar. B 135 - Tube Seamless Brass.

9、(DoD adopted) B 584 - Casting, Sand, Copper Alloy for General Applications. D 380 - Rubber Hose Methods of Testing. -(DoD adopted) (DoD adopted) (DoD adopted)“ 3.1.2: Delete and substitute: - * “3.1.2 - Couings. - A male coupling shall be attached to one end of the hose and a female swivel coupling

10、to the other end. Coupling shsll be brass and shall be of the reusable compression grip type consisting of a nipple and solid socket sleeve and grip. Threads shaIl conform to FED-STD-H28/10 and shall be as follows: 1-1/2 inch - ii-112 ftii 3/4 inch - -1/2 H . 3.1.2.1 Casting brass. When cast, coupli

11、ng parts shall be made from copper alloy as specified in ASTMB 584, 3i1.2.2 Brass rod and bar. Coupling parts made from bar stock shall con- hrm to cgpper alloy 360 as specified in ACTM B 16. -. 3.1.2.3 - Brass plate sheet, and strie, -Coupling partS.made from sheet stock siia21 conform to copper al

12、loy 260 as specified in ASTM B 36 or copper alfoy 353 as specified in ASTM B 121. 3-1.2.4 I_-_. Brass tubing. .Coupling parts made from tubing shall conform to apper alloy 230 or 269 as specified in ASTM B 135.“ . 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license

13、 from IHS-,-,-i Working pressure, minimum NIL-H-24580 (2) i2 7977706 0232734 b MIL-11-24 580 ( SH) AMENDMENT 2 Proof pressure, Burst pressure minimum minimum 3.2, line 2: Delete “two“ and substitute “a minimum OE 2“ and after “braided“ add “or spiraled“. 2 50 3.2.2, line 2: After “50 feet“ add “+ 6

14、inches“ 3.3.1, line 2: After “hardening“, add “in excess of 15 durometer points“. 500 1000 Table I: Delete and substitute: “TABLE I. . .Pressure measur_e_ments. I (Ib/in2, gauge) I (lb/in2, gauge) 1 (lb/in2, gauge) I PAGE 3 3.3.3: Delete and substitute: “3.3.3 Elongation and twist. Elongation and tw

15、ist, when measured at the working pressures shown in tablI, shall be as follows: (a) ElZngation/contraction. - The elongation or contraction of hose shall not exceed plus or minus 6 percent when tested as specifled in 4.5.4. tighten the coupling connection at reel end and in any event shall not exce

16、ed 1/2 degree per foot of hose length.“ (b) - Twist. mist, if any, shall. be in the direction that would Add tt.2 following paragraph: -“3.6 First article. When specified (see 6.2.1), the contractor shall fur- nish sample unit(s) for first article inspection and approval (see 4.2 and 6.3): PAGE 4 4.

17、3.3: Delete and substitute: “4.3.3 Sampling for qualig conformance (group A). Hose sample shall he -._11- selected at random from bulk Lse or coupled hose for the group A tests shown in table III. For the elongation and twist test, the samples shall be selected in accordance with MIL-STD-105 for the

18、 single sampling plan for normal inspection. The general inspection level shall be II with an AQL of 2.5 percent. For the burst test, one +foot section shall be cut from the bulk hose or from one sample coupled hose . “ “4.4.1: Add “If the rejection number exceeds the acceptance number (for the elon

19、gation and twist test) or if the sample 3-foot section fails the burst test, the lot represented by the samples shall be rejected.“ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-24580 (2) 42 = 7997906 0232935 8 = MIL-H-24580(SH) AMENDMENT 2 P

20、AGE 5 NOTE: The margins of this amendment is marked with an asterisk to indicate where a change from the previous amendment was made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in this notation. Bidders and contractors are cautioned to

21、 evaluate the requirements of this document based on the entire content irrespective of the marginal notatlon and relationship to the last previous amendment. 4.5.5: Delete and substitute: “4.5.5 - Burst. The sample 3-foot section of hose selected in accordance with 4.3.3 shall be subjected to the b

22、urst test to determine conformance with table I. The test shall be conducted in accordance with ASTM D 380.“ PAGES 5 and 6 6.2.: Add item (e): “(e) When a first article is required for inspection and approval (see 3.6, 4.2, and 6.3)“. LAST PAGE * DD Form 1426, Standardization Document Improvement Proposal: Delete address and substitute: “COMMANDER NAVAL SEA SYSTEMS COMMAND (SEA 5523) DEPARTMENT OF THE NAVY WASHINGTON, DC 20362-5101“ Preparing activity : Navy - SH (Project 4210-N197) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-

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