I need everyone’s help with a question! ! ! !
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It’s a DN150 pipe made to standard 20#8163; the SCH rating is 30, but when I checked the table for SCH ratings, there’s no SCH30 option for DN150! ! What should I do? ? ? ? ?
This post was last edited by FORREST_GUMP on 2016-9-17 at 20:11. The standards for the outer diameter and wall thickness of 8163 steel pipes are GBT 17395-2008, which specifies the dimensions, shape, weight, and allowable tolerances of seamless steel pipes; this standard does not include the concept of SCH. Have you mixed things up?
Sch30 denotes the pressure rating; the wall thickness can be determined by referring to the pipeline table
It’s probably not the original poster who got it mixed up, but rather the design that’s incorrect
That’s right; every time they give us the US standard versions, and we have to convert them to the Chinese standard ourselves
Check which size standard is used in the material table
Original poster, if it’s not listed in the table, just follow the national standards! :lol
For the DN150 pipes in SH 3405, there are those made of Sch30; you can check this outer diameter and wall thickness against GB 8163