樹脂瀝青 :軟化點50-60,灰分小于等于0.4,甲苯不溶物26-34,喹啉不溶物6-12,結焦值大于等于0.38,樹脂含量大于等于0.16,揮發份55-65,水分小于等于0.03,含硫量小于等于0.004