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Large and small head specifications

2016-05-17View Original

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I’m new to this equipment and can’t tell the difference between various standards. I want to attach a reducer to the flange, but I’m not sure what specifications to use; I hope everyone can help me out. Flange specification: FLANGE WN-RF 300LB HG/T20615-09, DN300; the back dimension of the flange ends is 150. How should the specifications for the flange ends be chosen?
Reply #22016-05-18
Take a look at the standard GB/T12459-2005: Bar counters, concentric type – DN300X150Ⅰ; wall thickness class R(C). Eccentric type: DN300X150Ⅰ; wall thickness class R(E). GB/T12459

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Translated at 2026-07-21 00:14:14

Original: https://bbs.hcbbs.com/thread-1586873-1-1.html

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