Which standards apply to flanges and flange covers for boilers?
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I would like to ask the experts: which standards apply to the flanges and flange covers used on boilers? JB/T81-2015 from the Ministry of Machinery, or HG/T20592～20635-2009? Which specification is used as the basis for selecting the execution standard?
JB/T86-2015 \"Steel Pipe Flange Covers\"
Could you explain the criteria for selection? Or in which cases should the Ministry of Chemical Industry be chosen, and in which cases should the Ministry of Machinery be chosen?
Personal understanding: Generally, the standards of the Mechanical Department are used for boilers, while containers are selected in accordance with Standard 20592 of the Chemical Industry Department.
We use RF flanges in accordance with JB/T81 for our boilers
There are no rules; it’s just tradition and habit.
For boilers, in accordance with DLT 5054-1996 Technical Specifications for the Design of Steam and Water Pipelines in Thermal Power Plants, the connection calculations are carried out in line with GB150, while the structural dimensions are determined according to GB9112–GB9131. For industrial boilers, the Safety Supervision Regulations for Pressure Pipelines – Industrial Pipelines, TSG D0001, Article 52, applies, with standards HG20592–20635 being used as reference.
7th floor, you have a solid grasp of the standards