名称：硬质沥青
Name : hard pitch

理化性质
Physical and chemical properties

同中温沥青
Same　Soft Picth

生产工艺：
Production process

中温沥青经过在一定的压力和温度下进行闪蒸获得。
It is obtained by distilling soft pitch in flash column under certain pressure and temperature .

运输
Transportation

液态时，以专用汽车槽车或专用轮船运输。经过固态成型后，以汽车或火车散装运输。按交通部危险品运输规定办理。
Transported using special truck or ship when it is in liquid form .Solid hard pitch is transported in bulk by trucks or by train . It is in the category of dangerous product stipulated by the Ministry of Transportation.