1、 INCH-POUND A-A-59350 3 August 1999 SUPERSEDING 29 May 1986 MIL-T- 18 134C COMMERCIAL ITEM DESCRIPTION TORCH, WELDING, HAND, OXYACETYLENE, LIGHT DUTY The General Services Administration has authorized the use of this commercial item description as a replacement for MIL-T- 18 134C for all federal age
2、ncies. 1. SCOPE. This commercial item description (CID) establishes the government acquisition requirements for a light-duty, hand-held, oxyacetylene-fueled, welding torch to be used for portable welding applications. 2. SALIENT CHARACTERISTICS. In addition to meeting all requirements specified in t
3、his document, the torch shall meet the performance requirements of Compressed Gas Association (CGA) standard E-1, “Standard Connections for Regulator Outlets, Torches, and Fitted Hose for Welding and Cutting Equipment”, and the performance and labeling requirements of Underwriters Laboratory (UL) st
4、andard 123, “Standard for Safety Oxy-Fuel Gas Torches”. 2.1 Type. The torch shall be designed for positive-pressure oxyacetylene operation, capable of mixing and controlling the flow of oxygen and acetylene gases to the welding tip. 2.2 k. The torch shall be sized for hand-held use. Torch length sha
5、ll be no less than 5 inches and no more than 8 inches. Torch weight shall not exceed 12 ounces. 2.3 Handle. The torch shall include a grip-type handle containing oxygen and acetylene control valves with inlet hose connectors, internal gas passages, and an oxyacetylene outlet connector. 2.4 Valves. T
6、he torch shall include oxygen and acetylene control valves which will fully close with no more than 20 inch-pounds of torque applied to the valve knobs and will leak no gas from inlet to outlet under differential pressures up to 50 pounds-per-square-inch gauge (psig). The valve stems shall be sealed
7、 with packing to prevent any external gas leakage and to prevent inadvertent stem rotation with up to 4 inch-ounces of torque applied to the knobs. The valve Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any other data which may improve this document should be
8、sent to: Defense Supply Center Richmond (DSCR), ATTN: DSCR-VBD, 8000 Jefferson Davis Highway, Richmond, VA 23297-5610. AMSC NIA FSC 3433 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Licensed by Information Handling ServicesA-A-59350 48 - 51 knobs shall provide a
9、positive grip for gloved operators and shall not separate from the stem when pulled with 70 pounds of force along the stem axis or loosen from the stem when twisted with 50 inch-pounds of radial torque. 0.082 - 0.067 2.5 Gas inlets. The gas inlet hose connections shall be installed at the rear of th
10、e torch handle and shall meet the requirements of CGA E- 1, connections 020 and 021. Each inlet shall be clearly and permanently marked to idente the oxygen and fuelacetylene connection points. 2.6 Welding tips. Each torch shall include three welding tips, one in each of the sizes listed in table I.
11、 The tip sizes shall be legibly and permanently marked according to the manufacturers standard practice. Each welding tip shall have a gooseneck shape and shall include either an internal or external mixer. For an external mixer, the tip shall be threaded externally to provide a gas-tight, metal-to-
12、metal fit with the mixing chamber. The welding flame produced, whether long or bulbous, shall be symmetrical around the tip axis. TABLE I. Welding tip sizes. I Drill Size (Number) I Orifice Diameter (Inches) I I 73 - 75 I 0.024 - 0.021 I I 55 - 57 I 0.052 - 0.043 I 2.7 Flashback protection. When ope
13、rating with the tip and mixing chamber attached and with the oxygen and acetylene set at the manufacturers recommended pressures, the torch shall withstand five backfires at a rate of at least one per second with no flashback. 2.8 Leakage protection. Joints, packing, O-rings, metal-to-metal mating s
14、eals, gas passages, connections, and glands shall withstand internal and external gas pressures of at least 50 psig with no leakage. An internally pressurized control valve, immersed in clean water for five seconds, shall produce no visible bubble, with the valve either closed or opened for internal
15、 gas flow. Hand-tightened welding tip seats at maximum operating pressures shall allow no gas leakage. 3. REGULATORY REQUIREMENTS 3.1 Recvcovered materials. Offerors and contractors are encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of th
16、e Federal Acquisition Regulation (FAR). 3.2 Environmental protection. All welding torch products and production methods shall meet all applicable Environmental Protection Agency restrictions in effect on the date of the associated contract. These regulations spec material emissions which are hazardo
17、us to the environment or to the users health and shall be applied during the manufacture, service, transportation, storage, and use of the torch supplied. 2 Licensed by Information Handling ServicesA-A-59350 4. QUALITY ASSURANCE PROVISIONS 4.1 Product conformance. The torch provided shall meet the s
18、alient characteristics requirements of this commercial item description; conform to the producers own drawings, specifications, standards, and quality assurance practices; and be the same product offered for sale in the commercial market. The government reserves the right to require proof of such co
19、nformance. 4.2 Market acceptability criteria. The item offered must have been previously sold on the commercial market. 5. PACKAGING 5.1 Preservation, packing, and marking. For acquisition purposes, the torch shall be preserved, packed, and marked as specified in the contract or order. 6. NOTES 6.1
20、Sources of documents 6.1.1 CGA standards. Copies of CGA standards may be obtained from the Compressed Gas Association, Inc., 1235 Jefferson Davis Highway, Arlington, VA 22202. 6.1.2 UL standards. Copies of UL standards may be obtained from Underwriters Laboratories, Inc., 333 Pfingsten Road, Northbr
21、ook, IL 60062. 6.1.3 m. The FAR may be obtained from the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402-0001. 6.2 National stock number (NSN). This CID is associated with NSN 3433-00-255-9332. Other NSNs may also apply to the torch specified in this document. 6.3
22、Sources of supply. The manufacturers and/or suppliers listed below are known to supply products which meet the salient characteristics requirements of this document. Competition is not limited to the listed firms. L and M Welding Supply, Inc. 568 Western Drive Mobile, AL 36607 (334) 470-9997 Uniweld
23、 Products, Inc. 2850 Ravenswood Road Fort Lauderdale, FL 33312-4994 (954) 584-2000 3 Licensed by Information Handling ServicesA-A-59350 MILITARY INTERESTS: Custodians: Air Force - 99 Army - AL Navy - SH Review ers : Air Force - 84 Navy - CG, MC, OS CIVIL AGENCY COORDINATING ACTIVITY: GSA - 6FET Preparing activity: DLA - GS (Project 3433-0152) 4 Licensed by Information Handling Services
