JG 221-2007 (English Version) PDF

Scope: This standard specifies the terms and definitions, models and markings, requirements, test methods, inspection rules, marking, packaging, transportation and storage of convection radiators with copper tubes and aluminum strands as heat dissipation elements (hereinafter referred to as convection radiators). This standard applies to convection radiators using hot water as the heating medium in industrial and civil buildings. The working pressure of the convection radiator is 1.0 MP, and the temperature of the heat medium is not higher than 95 ℃; the pH of the heat medium is pH=7~12, and the chloride ions (Cl) and sulfate (S0) are not more than 100 mg/L respectively. Other indicators should be based on the water supply situation of the heating system and comply with the provisions on water quality of the heating system in the standards GB 1576 and HG/T 3729 respectively.

JG 221-2007 Referenced Document

GB 1576 Water quality for industrial boilers
GB/T 13237 Cold rolled quality carbon structural steel sheet and strips
GB/T 13754 Test methods of thermal output of heating radiators*， 2017-05-31 Update
GB/T 1720 Circle-drawing test of coating films*， 2020-11-19 Update
GB/T 1732 Determination of impact resistance of coating films*， 2020-11-19 Update
GB/T 17791 "Seamless copper and copper alloys tube for air conditioner and refrigeration equipment"*， 2017-07-12 Update
GB/T 2828.1 Inspection procedure by count sampling part 1: Lot by lot inspection sampling plan retrieved by acceptance quality limit (AQL)*， 2013-02-15 Update
GB/T 4428 Leaded brass bar for making needle seat of syringe
GB/T 5231 Designation and chemical composition of wrought copper and copper alloys*， 2022-03-09 Update
GB/T 7307 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads
GB/T 8544 Aluminum and aluminium alloy cold rolled strip
HG/T 3729 Specification for radio-frequency(RF) type physical field treatment equipment of water
HGJ 223 Technical specification for welding copper and copper alloys (explanation)

JG 221-2007 Copper tube convector was changed to JG/T 221-2016 Copper tube convector.