ASTM A 577 A 577M – 90 pdf free download
Standard Specification for Ultrasonic Angle-Beam Examination of Steel Plates1 This standard is issued under the fixed designation A 577/A 577M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript …
