GB/T 39287-2020 Closed expansion vessels

Scope: This standard specifies the classification and marking of closed expansion cylinders, general requirements, requirements, test methods, inspection rules, signs, installation and maintenance instructions and certificates, packaging, transportation and storage. This standard applies to building heating, air-conditioning and domestic water supply systems. The working medium is water or a certain concentration of ethylene glycol aqueous solution (the content of ethylene glycol is not more than 49%). The working temperature range is from -10 to 70°C. Closed expansion negative greater than 1.6 MPa.

GB/T 13306 Plates
GB/T 13934 Rubber vulcanized or thermoplastic Determination of flex cracking and crack growth (De mattia)
GB/T 1690 Rubber,vulcanized or thermoplastic.Determination of the effect of liquids
GB/T 17219 Standard for safety evaluation of equipment and protective materials in drinking water system
GB/T 1771 Paints and varnishes.Determination of resistance to neutral salt spray(fog)
GB/T 2828 Batch-by-batch inspection counting sampling procedure and sampling table (applicable to continuous batch inspection)
GB/T 3512 Rubber, vulcanized or thermoplastic.Accelerated ageing and heat resistance tests.Air-oven method
GB/T 528 Rubber,vulcanized or thermoplastic.Determination of tensile stress-strain properties
GB/T 531 Rubber--Determination of indentation hardness by means of pocket hardness meters
GB/T 9286 Paints and varnishes—Cross-cut test*， 2021-08-20 Update

GB/T 39287-2020Closed expansion vessels