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3. ASTM E213-20.: Standard practice for ultrasonic testing of metal pipe and tubing. ASTM International, West Conshohocken (2020)
4. ISO 10893.: Automated full peripheral ultrasonic testing of seamless and welded (except submerged arcwelded) longitudinal and/or transverse imperfections, vol. 11, Brussels: CEN (2020)
5. API SPECIFICATION 5CT: Casing and Tubing, 10th edn. American Petroleum Institute, Washington (2018)