1 Scope
This standard specifies the principle, method, reference sample, equipment, conditions, procedure, result evaluation and report for ultrasonic testing of seamless steel tubes.
This standard is applicable to the ultrasonic testing for longitudinal and transverse flaws of seamless steel tubes for various purposes. The testing methods stated in this standard are mainly applicable to testing the flaws that destroy the metal continuity of steel tubes, but cannot effectively test laminar flaws.
This standard is applicable to steel tubes with an outside diameter greater than or equal to 6mm, and with an thickness-to-outside diameter ratio not greater than 0.2. For tubes with a wall thickness-to-outside diameter ratio larger than 0.2, special method shall be determined by purchaser and manufacturer according to Annex A.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At time of publication, the editions indicated were valid. All the standards will be modified, however, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below.
YB 4082-92 Measurement Method of Comprehensive Properties for Automatic Ultrasonic Testing System for Steel Tubes
ZB Y230-84 Commonly used Specification for A-mode Ultrasonic Flaw Detector Using Pulse Echo Technique
3 Ultrasonic Testing Principle
Foreword I
International Foreword II
1 Scope
2 Normative References
3 Ultrasonic Testing Principle
4 Testing Method
5 Reference Samples
6 Ultrasonic Testing Equipment
Annex A (Normative) Testing of Tubes Having an Wall Thickness-to-outside Diameter Ratio Larger than
