1, raw material inspection

2. Divide by strip

3. Shaping and shaping

Step 4 weld

Step 5 cut off the cutting

6. Heat treatment

7, plastic straightening

8. Flat end and flat end

9, eddy current flaw detection

10, hydraulic test

1 1, internal polishing internal polishing

12, external polishing

13, terminal check terminal test

14, ex works