What is the standard for the outer diameter of this water-gas pipe with dimensions 33.5×3.25?
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This post was last edited by FMSD on 2017-1-19 at 14:10. What is the standard for the outer diameter of this water-gas pipe with dimensions 33.5×3.25? The current national standard for low-pressure fluid transport pipes in China is 3091; this standard specifies that the outer diameter should comply with standard 21835. However, standard 21835 does not cover an outer diameter of 33.5. This specification is used in water and gas pipes, but it is not specified what the standard for the outer diameter should be in such cases It’s a headache – the power industry platform, escalators, and Item 87 specify this standard; I don’t know where it comes from.
It’s the 87 version; the standards should have been updated by now
Check out the new Typical Design for Steam and Water Pipeline Parts and Components in Thermal Power Plants (GD2000 version)
I need to check the standards for outer diameter; the standards applicable to soda pipes obviously do not fall under those enforcement standards – they are merely selection guides