The erosion resistance of enameling pipe is enhanced but the equipment is expensive, the procedure is complex, the production coefficient is low and the cost of enameling pipe is high.

• 俄罗斯率先将搪瓷技术应用于管道防腐，大大提高了管道的耐蚀性，但设备投资巨大、工序繁多、生产效率低，成本相对较高。