Manufacturing Process Flow Chart
1) Prebending
2) Rolling
3) Tacking
4) Internal Long Welding
5) External Long Welding
6) Internal Circle Welding
7) External Circle Welding
8) Hydrostatic Testing
9) Grit Blasting Process
10) Primer Coating
11) Bitumen Lining Reinforced With Fibreglass Innerwrap And Outerwrap
12) Centrifugal Spinning and Concrete Lining Process
Storage For Curing
