I have a question regarding large-diameter pipes
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I would like to ask the experts: for pipes used in waste gas and flue gas systems, the diameter sometimes exceeds φ2020; specifications for such pipes are no longer available in catalogs up to 20553. Are there any special standards or regulations applicable to pipes of this large diameter? Or something like this, where the pipeline standard is no longer applicable; if that standard isn’t used, then what standard should be considered for implementation?
It can be customized; only non-standard products can be made. You provide the standards, and the resulting products just need to meet your requirements. The pressure and temperature in the flue are not high, so ordinary steel is sufficient
I know it’s custom-made; so do you mean that it belongs to non-standard equipment, and thus doesn’t need to comply with pipeline standards or equipment specifications?
It has already exceeded the limits; the only option is to expand it further by using the highest standard. As for the size, it exceeds the specified limits, but everything else remains in accordance with the original standards
Both SH 3405 and GB28708 include standard welded steel pipes with a length of over 2000