Issues with the impact energy index of steel pipes
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Article 2.4.1 of the "New Compliance Regulations" mentions that the diameter and thickness of steel pipes can be used to prepare small-size impact specimens with a width of 5mm. The impact energy index of the V-notch specimen at the impact test temperature according to the design requirements should comply with the provisions of Table 2-1. However, some steel pipes (such as 10 and 20 steel pipes in GB/T8163, GB The same goes for some steel pipes of 9948). The standard does not do impact tests and there is no impact energy data. So when we select these steel pipes, do we need to do additional impact tests (the diameter and thickness are enough to prepare small-size impact specimens with a width of 5mm, φ70 or more, and a thickness of 6.5 or more). It has been so long since the "New Appearance Regulations" were promulgated. I wonder how everyone understands this and how to do it?
should be done. Designs can make higher demands than standards.
It should be done. The new version 150 also has additional requirements for GB6479 steel pipes. It is said that it is because GB6479 does not guarantee impact performance.
No need to do it. Please read the standard terms carefully. The article says that if an impact test is required, the impact energy must meet the minimum requirements. It does not mean that everyone who can test specimens must do an impact test.
I agree with the fourth floor's point of view. The current impact requirements are higher than those of the 1998 version of GB150, but that doesn't mean that all of them need to be impacted.
The terms and conditions do not say whether to do an impact test, but there are requirements for impact energy indicators. If no impact test has been done, where will the data come from?
Reply 6# zww55 The premise of this indicator is: If it is to be made according to drawings or standard requirements, then the minimum requirements for impact energy should comply with the requirements of the "Solid Regulations". That is to point out the minimum index requirements for impact energy.