Some standards for blind flanges

2019-03-26View Original

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There is a sequence of numbers on the blind flange: NFF TS BLRF 1‘ CL150 20# HG20622 2205-03845 1046868. What does NFF TS mean? BL: blind flange CL: class 20#: steel grade 20? 2205-03845 1046868: What does this mean?

Reply #22019-04-02

Usually, just the sequence of numbers at the beginning is enough; I guess it might be the contract number or the manufacturer’s own identification number?

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Some standards for blind flanges

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