Heat exchanger flange issues
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On the flange of the heat exchanger, the following markings can be seen: WN 250-5 OM SCH40 00Cr19Ni10II TH1495. Here, 250 represents DN, 5 represents PN, and 00Cr19Ni10II refers to 304L. So what do SCH40 and TH1495 mean? ? ? Thank you. . .
Sch40 is the inner diameter size for welded steel pipe flanges with necks (American system), and it can be found in the appendix attached to the flange standards.
Sch40 refers to the thickness of the pipe fitting, that is, the thickness of the smaller end of the flange. As mentioned above, the corresponding B value can be found in the flange standards, while the corresponding wall thickness of the pipe fitting can be found in the pipe fitting standards. I’m not sure what TH1495 means either for now; sorry
I found a link related to SCH40. As for TH, I learned that it refers to a threaded flange; however, I’m not sure what the number 1495 means. http://bbs.hcbbs.com/thread-345255-1-1.html http://www.baidu.com/s?tn=yyd6188&ie=gb2312&bs=sch40&sr=&z=&cl=3&f=8&wd=sch40+%CA%B2%C3%B4%D2%E2%CB%BC&ct=0 This post was last edited by wode*aohei on 2009-3-27 at 10:29
Bro, the address you gave is wrong. . . The link doesn’t work. . . :o
Sorry bro, I didn’t click on the link to try it out after posting yesterday; I gave it a try today and really couldn’t get in. It’s probably due to network issues. I’ve edited it again and provided you with a Baidu link – that one works. I apologize for the inconvenience caused to you due to my own reasons; I’m sorry.
Sch40 is the thickness of the smaller end of the flange
Sch40 refers to the wall thickness of the pipe; it can also be called a series. As for TH1495, I’m not sure. However, if you take a look at the heat exchanger drawings, you might be able to find out