This Part of GB/T 7223 specifies the requirements for the ultrasonic examination of steel castings (non-austenitic steel) for general purposes, and the methods for determining internal discontinuities by the pulse-echo technique. This Part is applicable to the ultrasonic examination of steel castings (non-austenitic steel) which have usually received a grain-refining heat treatment, and which have wall thicknesses up to and including 600 mm. For greater wall thicknesses, special agreements shall be in place for the test procedure and recording levels. This Part does not apply to austenitic steels and joint welds.
Basic Data
Standard ID
GB/T 7233.1-2009 (GB/T7233.1-2009)
Description (Translated English)
Steel castings -- Ultrasonic examination -- Part 1: Steel castings for general purposes
National Standard Approval Announcement 2009 No.12 (Total No.152)
Issuing agency(ies)
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary
This standard specifies the terms and definitions for general purpose steel castings (non- austenitic) ultrasonic testing, General requirements and application pulse echo technique to detect internal defects. This section applies to general purpose steel castings (non- austenite) grain refinement heat treatment and a thickness not exceeding 600 mm ultrasonic testing of steel castings. For thickness greater than 600 mm of steel castings, should the agreement detection and recording limits. This section does not apply to austenitic steels.
