AWS A5.32-A5.32M-1997 焊接保护气体规范.pdfVIP

S T D - A U S A5.32 -ENGL 1997 078Li2b5 0508902 T27 = ANSUAWS A5.32IA5.32M-97 An American National Standard Specification for Welding Shielding Gases COPYRIGHT American Welding Society, Inc. Licensed by Information Handling Services Key Words- Argon, carbon dioxide, helium, hydrogen, nitrogen, oxygen, shielding gases, welding gases ANSVAWS A5.32lA5.32M-97 An American National Standard Approved by American National Standards Institute December 8,1997 Specification for Welding Shielding Gases Prepared by AWS Committee on Filler Metals Under the Direction of AWS Technical Activities Committee Approved by AWS Board of Directors Abstract This specification for welding shielding gases specifies minimum requirements for the composition and purity of the most popular single-component shielding gases. Classification designators for both single and multicomponent gases are introduced. Other topics include testing procedures, package marking, and general application guidelines. This specification makes use of both U.S. Customary Units and the International System of Units (SI). Since these are not equivalent, each system must be used independently of the other. American Welding Society 550 N.W. LeJeune Road, Miami, Florida 33126 COPYRIGHT American Welding Society, Inc. Licensed by Information Handling Services Statement on Use of AWS Standards All standards (codes, specifications, recommended practices, methods, classifications, and guides) of the American Welding Society are voluntary consensus standards that have been developed in accordance with the rules of the Ameri- can National Standards Institute. When AWS standards are either incorporated in, or made part of, documents that are included in federal or state laws and regulations, or the regulations of other governmental bodies, their provisions carry the full legal authority of the statute. In such cases, any changes in those AWS standards must be approved by the gov- ernmental body