| Tanks | Zone-1 Corrosive Liquids | Zone-2 Slurries | Zone-3 Solids |
| Spiral | Yes | Yes | Yes |
| Mild Steel | No | No | Some |
| Stainless Steel | Some | Yes | Yes |
| Wood | No | No | Yes |
| F.R.P. | Some | Yes | Yes |
| Rubber-lined | Some | Yes | Yes |
| Load | Yes | Yes | Yes |
| | UNIT | TEST SPEC | PE(HD) | PP (COPOLYMER) |
| Density@ 23° C | g/Cm3 | ISO1183 | 0.953 | 0.912 |
| MFI 1900C | g/10Min. | ISO1133 | 0.45 | 0.40 |
| Yield Stress | MPa | ISO 527 | 21 | 26 |
| Yield Strain | % | ISO 527 | 10 | 15 |
| Tensile Modules of Elasticity | Mpa | ISO 527 | 800 | 950 |
| Tensile Creep | Mpa | ISO 899 | 430 | 740 |
| Modules | Mpa | ISO 899 | 240 | 320 |