Coal grade G is a long-flaming coal that is named for its long flame burning properties. Coal grade G is easily ignited and does not require additional blowing. The combustion process itself is quite long with a large release of heat. Coal grade D is well suited for domestic boilers due to its high quality, affordable price and ease of use. It is used in furnaces, because long-flaming coal has a large heat output and is not sintered, leaving a minimum of soot and ash. This brand of coal is often used in baths, saunas. Burning without blowing makes this brand excellent fuel for boilers.
