M-40
Heating oil M-40 is produced from the remnants of oil refining, classified as an average boiler fuel. Diesel fractions (8-15%) are added to it, thus reducing the setting point to 10℃.
Heavy fuel oil is obtained from the residues of atmospheric and vacuum distillation of oil with the addition of gas oil fractions. Fuel oil M-100 brand does not contain diesel fractions, but when they are added, M-40 can be obtained.
Heating oil is used as fuel: M-100 is mainly used in boiler houses and heating systems, and M-40 is used in industrial furnaces. Oil product is widely used in boiler-rooms to heat houses, and generate hot water or steam. A special brand, TCM fuel oil, is used for heating steam boilers and industrial furnace installations.