Stainless steel honing pipe can usually be used as the main body of hydraulic cylinder. The quality of its processing directly affects the service life and reliability of the product itself. Therefore, the processing requirements are relatively high. The basic feature is deep hole processing, which has high technical requirements. When this important component fails, its harm is self-evident. The wide application of hydraulic cylinders is well known. As a hydraulic actuator that can convert hydraulic energy into mechanical energy for linear motion or reciprocating motion (swing motion), it has a simple structure, reliable work, and can eliminate the deceleration device. There is no transmission gap, and the movement is stable. The cylinder barrel of the hydraulic cylinder has high technical requirements, so it is necessary to be cautious in production and use .