Gasket selection indication
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Regarding the gasket selection in the screenshot, it’s similar to D2231; what does the ‘D’ stand for? What do 2231 represent respectively? Please ask the sea friends to help clarify this
Take a look at JB/T 90-2015 \"Wound Gaskets for Pipeline Flanges\"
Type D (with inner ring and centering ring, suitable for convex sealing surfaces) 2231 (the first digit indicates the material of the centering ring – 304; the second digit indicates the material of the metal band – 304; the third digit indicates the filling material – polytetrafluoroethylene; the fourth digit indicates the material of the inner ring – carbon steel)
This post was last edited by qwl on 2018-3-15 at 10:40: D-type metal wound gaskets with inner and outer rings. 2 Outer ring material (0Cr18Ni9) 2 Metal strip material (0Cr18Ni9) 3 Metal strip filler material (polytetrafluoroethylene) 1 Inner ring material (0Cr13).file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image001.jpg
Thank you. Is the image you sent a screenshot from SH/T3407?