The Application of ClockSpring Apparatus in Defect Repair of Pipeline

The ClockSpring apparatus's development and application, main technical indexes and site installation in pipeline repair is introduces and its available application condition of this apparatus is given. Some questions in site application are pointed out and analyzed. The authors consider that this ClockSpring apparatus is characterized by convenient installation, time saving, without shutdown of pipeline and pressure decrease, and is a permanent repair manner for the oil pipeline.