20g steel belongs to the boiler plate. G is the first letter of the "Guolu" in the boiler plate: g. Executive standard: GB713-1997
In 2008 version, the standard was changed to Q245R material
Handle delivery: controlled rolling, normalizing, etc.
Flaw detection standard implementation: JB/ T4730.3-2005, divided into three levels.
20G tensile strength yield strength elongation at break
410-550MPa 235-245MPa 20%
Difference between 20 # and 20g seamless tubeThere are seamless tubes 20 # steel and 20g steel. In addition to the same carbon content, 20g also has some trace elements that are more suitable for boilers and pressure vessels. Another 20g also focuses on evaluating its physical properties such as bending, impact and tensile properties.
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