Which standard applies to this diameter and wall thickness?
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It’s a set of drawings provided by a pump manufacturer, but the pipe diameters and wall thicknesses specified in those drawings do not match the standard values. I would like to ask everyone: what standard are they using?
There must be an issue with the markings; pipes of this diameter have never been used.
I feel the same way, especially regarding the imported Φ102 line – I’ve never seen that before! The outlet is a high-pressure pipeline, which is understandable!
JB and YB both have corresponding welded pipes and seamless steel pipes
Yes, but standard fonts are rarely used these days. The fittings connected to it generally choose the national standard series.
Did the designers decide the outer diameter and wall thickness arbitrarily?
When making such markings, this rule is generally followed: the outer diameter multiplied by the wall thickness. Is the outer diameter of 102 a mistake made by a beginner student? It should be 108×5.0
This is that standard; you can take a look.
Look at the picture posted by which sea friend below! There really is this wall thickness series!
Every time I purchase pumps, I specifically request in the technical specifications that diameters such as DN32 and DN65 should not be used, but the manufacturers ignore this request. The original poster’s version is better – it comes up with something that’s never been heard of. I’m puzzled: whether it’s due to cost reasons or something else, have the manufacturers considered how the client will purchase the materials and pipes when choosing these specifications? ?
They only consider their own convenience, without giving any thought to the designers. When they saw these blueprints, everyone was stunned! :funk: