GB/T 38719-2020: Metallic Materials - Tube - Determination of Biaxial Stress-strain Curve of Tube by Hydro-bulging Test

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Scope

This Standard specifies the terms and definitions, symbols and descriptions, test
principles, equipment, specimens, test procedures, calculation of biaxial stress-strain
curves and test reports of the biaxial stress-strain curve hydro-bulging test for metallic
material tubes.
This Standard is applicable to thin-walled metal tubes with a circular section (including
seamless tubes and welded tubes) whose wall thickness is not less than 0.5 mm and
diameter-to-thickness ratio is greater than 20.

Basic Data

Standard ID	GB/T 38719-2020 (GB/T38719-2020)
Description (Translated English)	Metallic Materials - Tube - Determination of Biaxial Stress-strain Curve of Tube by Hydro-bulging Test
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H22
Classification of International Standard	77.040.10
Word Count Estimation	16,198
Date of Issue	2020-03-31
Date of Implementation	2020-10-01
Quoted Standard	GB/T 228.1; GB/T 15825.2
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration
Summary	This standard specifies the terms and definitions, symbols and descriptions, test principles, equipment, specimens, test procedures, calculation of biaxial stress-strain curves and test reports for the biaxial stress-strain curve hydraulic bulging test of metal pipes. This standard applies to circular section thin-walled metal pipes (including seamless pipes and welded pipes) with a wall thickness of not less than 0.5 mm and a diameter-to-thickness ratio (ratio of outer diameter to wall thickness) greater than 20.