Standard number of help gasket

2019-06-14View Original

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D1222 spiral wound gasket D: spiral wound gasket with inner and outer reinforced rings The first digit 1: Outer ring material (i.e. centering ring) 1: Mild steel (20#) second digit 2: Inlay material for body material 2: 0Cr18Ni9 (304) third digit 2: Outer material of main material 2: Flexible graphite tape fourth digit 2: Inner ring material 2: 0Cr18Ni9 (304) Please help. The model number of the above gasket indicates which standard it belongs to. I won’t be able to find it for a while, so I’m worried.

Reply #22019-06-14

HG20610-1997

Reply #32019-06-14

HG’s flange standards include HGT 20592~20634-2009. Don’t mistake it with the petrochemical ones. The order of the two is reversed.

Reply #42019-06-14

In HG/T 20592~20634-2009

Reply #52019-06-14

Thank you very much, found the new standard HGT 20610-2009

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Standard number of help gasket

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