Flange bolt

2010-09-19View Original

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How are flanges and bolts represented? What are the various specifications available, and what are the differences between different specifications and materials? Let’s discuss this: for example, what does each number represent in the flange of 125-1.6 SO-RF? And what do M16x80 hex head bolts and the material 8.8/Galv mean?

Reply #22010-09-20

This flange belongs to the European system flanges: 125 – nominal flange size DN125; 1.6 – nominal flange pressure: 1.6 MPa; SO – flange type: wafer flat face flange; RF – flange sealing surface type: raised face. 8.8/Galv denotes the performance grade of the bolts. For more details, refer to HG/T 20592-2009 Steel Pipe Flanges

Reply #32010-09-20

8.8/Galv: Performance grade 8.8; surface galvanized

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Flange bolt

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