The double corrugated compensator is a flexible component composed of two corrugated pipes with the same geometric parameters and the same wave number connected by the middle pipe, small tie rods, and tube end. It has the characteristics of good flexibility, corrosion resistance, wear resistance and long fatigue life. Absorb the axial, lateral and angular displacement of the pipeline. It has provided supporting facilities for many large-scale cement plants, steel plants, power plants, chemical plants and other key industries and enterprises at home and abroad, and the product quality is stable and reliable.