DIN 44874-2
DIN 44874-2
Electrical tubular heating elements, metal sheated, 6.5 mm and 8.5 mm diameter; terminalsstandard by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/1976
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/1976