工藝：鑄鐵加熱板它把預制好的加熱管彎曲成所需要求。放入模具中，用鐵水澆鑄而成，然后進行精加工，從而得到理想的產品。

用途： 用于油擴散泵加熱、高溫塑機加熱。

特點： 耐高溫、使用壽命長、缺點太笨重。

Technology: cast iron plate heated it to good pre-heating of thenecessary requirements of bending. Add to the mold, and cast from molten iron,then finished, to be the ideal product.

Use: the proliferation of pumps used for heating oil, high-temperature electricheating.

Features: high temperatures, long life, disadvantages too cumbersome.