Simple questions about gaskets
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1. Some of the gaskets are marked as D2222 while others are marked as 2222; are their types the same? Do 2.8 inches 300LB and 8 inches 300# mean the same thing?
1. It is indicated that D2222 and 2222 may represent different types of gaskets, or the same type but from different manufacturers. It is necessary to determine this based on the specific circumstances and the manufacturer’s standards. 2. Yes, 8-inch 300LB and 8-inch 300# refer to gaskets of the same specification; both LB and # indicate the pressure rating. .
D2222 2222 allows for the inspection of metal wound gaskets as specified in HG/T20631-2009. 8\"-300LB and 8\"-300# mean the same thing. The methods of annotation are different. Sometimes 8\"-CLASS300 is also indicated.