1. Filled
Use PVC hard pipe as a protective sleeve, put 48 pigtails into the pipe one after another, let them protect the pigtails, and then pass through a 5m diameter 3.5cm corrugated pipe; the number of operators is 3; the cost of the pipe is 50 yuan; the test time consumption is 71min.
Advantages: good protection.
Disadvantages: poor flexibility, low space utilization, poor applicability, and inportability.
2. Filled
Using plastic hoses as protective sleeves, 48 pigtails were inserted into the pipe one after another to protect the pigtails, and then passed through a 5m diameter 3.5cm corrugated pipe; the number of operators was 2; the cost of the pipe was 45 yuan; the test time consumption was 57min.
Advantages: good protection, good flexibility.
Disadvantages: low space utilization, poor applicability, and inportability.
3. Wrapped
The low-density polyethylene material is used as a protective cover, and 48 pigtails are reasonably placed and arranged, and finally rolled up and passed through a 5m diameter 3.5cm corrugated pipe; the number of operators is 1; the material cost is 2 yuan; the test time consumption is 49min.
Advantages: light and practical, good flexibility, high space utilization.
Disadvantages: difficult to arrange.