Are the pipeline wall thickness specifications 20553 all lies?
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Reference to the original post: http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1560670&page=1#pid15218482 The minimum wall thickness for DN200 II series seamless steel pipes is 6mm; there was a design error here – the design documents specified a wall thickness of 4mm. It’s necessary to inform the client immediately, but they have already purchased pipes with a 4mm wall thickness. What’s going on? Is 20553 for reference only? Are there any other wall thickness specifications?
Now customers are kings; if you request 4mm, the manufacturer has no choice but to produce special tubes to meet that requirement.
The tube with a diameter of 200 is only 4 mm thick – what kind of medium do you plan to use?
It depends on the material; those made from nickel-based ferroalloys are thin and very hard.
The pipes purchased by the owner, 219*4? ? 99% of them are not seamless pipes; and even if they were seamless, they couldn’t be purchased so quickly. It should be welded pipe; for welded pipe, the thinnest thickness that can be achieved is 2 mm
It depends on the medium you use; if it’s a duct, 2mm is sufficient