Is there a difference in the cast steel material between insulation pumps and asphalt pumps

The insulation pump and asphalt pump are made of integral carbon steel with heating insulation sleeves. The temperature of iron reaches 80 degrees and that of steel reaches 350 degrees, with different service lives. Users should pay attention to the selection of materials. The materials are divided into two types according to the working temperature. Type I material HT200 is suitable for conveying below 200 ℃, and Type II material Q235 is suitable for conveying non corrosive heavy oil/asphalt below 350 ℃, which does not contain solid particles and has solidification at room temperature. It is also suitable for outdoor installation and process insulation in high-altitude areas.