1、Welding Processes,Inspection,and MetallurgyAPI RECOMMENDED PRACTICE 577 THIRD EDITION,OCTOBER 2020Special NotesAPI publications necessarily address problems of a general nature.With respect to particular circumstances,local,state,and federal laws and regulations should be reviewed.Neither API nor an
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15、ons and materials is publishedannually by API,200 Massachusetts Avenue,Suite 1100,Washington,DC 20001.Suggested revisions are invited and should be submitted to the Standards Department,API,200 MassachusettsAvenue,Suite 1100,Washington,DC 20001,standardsapi.org.iiiContentsPage1Scope.12Normative Refe
16、rences .13Terms,Definitions,and Acronyms.33.1Terms and Definitions .33.2Acronyms.124Welding Processes.124.1General.124.2Shielded Metal Arc Welding(SMAW).124.3Gas Tungsten Arc Welding(GTAW).154.4Gas Metal Arc Welding(GMAW).184.5Flux-Cored Arc Welding(FCAW).214.6Submerged Arc Welding(SAW).244.7Stud Arc Welding(SW).264.8Plasma Arc Welding(PAW).264.9Electrogas Welding(EGW).285Welding Materials.305.1General.305.2P-Number Assignment to Base Metals.305.3F-Number Assignment to Filler Metals.315.4AWS Cla
