Piping Material Engineering involves various activities such as preparation of Piping Material Specification Notes and Data, Preparation of individual Material Classes, Preparation of Enquiry and Purchase Specifications, Special Items List and Data Sheets, Valves Data Sheets etc. Typical manhours required for each of these activities are as follows.
| Sr. | Activity/Unit | New | Update |
| 1 | Preparation of Piping Material Specification Notes and Data : Total | 20 | 5 |
| 2 | Individual Piping Material Classes | 20 | 4 |
| 3 | Enquiry / Purchase Specifications for Pipes, Valves, Fittings / Per Spec. | 5 | New |
| 4 | Testing, Cleaning, Passivating Specifications / Per Spec | 20 | 5 |
| 5 | Special Items List/Data Sheets/Spec / Per SP Item | 8 | 4 |
| 6 | Insulation, Coating, Painting, Lining Specificaiton / Per Spec. | 20 | 5 |
| 7 | Welding / NDE Specification | 20 | 5 |
| 8 | Project Commodity Catalog : Total | 8 | New |
| 9 | Line List Index Development/Maintainence / Per line | 0.5 | 0.5 |
| 10 | Supervision of All Above Activities : 10% of Total Above. | 10% | 10% |