| SR. NO. |
|
MS |
GI |
Alu Pipe |
| 1 |
INITIAL COST |
MINIMUM |
20% Higher than MS |
Almost double of that MS |
| 2 |
LIFE |
10-15 years |
10-15 years |
30-40 years |
| 3 |
Air quality |
worst |
Slightly better than MS in initial few years but becomes almost same after 2-3 years of operation |
Excellent air Quality meeting ISO 8573 class 1, since no rusting takes place in the system |
| 4 |
Leakage |
Most prone to leakages within a few years of operation, in general 5-7% leakges start within five years of operation |
Most prone to leakages within a few years of operation, in general 5-7% leakges start within five years of operation |
The system is designed for a leakage rate of 0.0001 scfm per joint and is guarateed for next ten years of operation, resulting in 5% saving on account of electricity cost |
| 5 |
Pressure drop |
maximum, due to rusting and rough surface |
maximum, due to rusting and rough surface |
Minimum as the inner suface of the piping is of glass finish and results in smooth flow of air. This is almost 50% in comparision to MS/GI piping, and results in 5% saving for a 0.5 bar presure drop |
| 6 |
Down Stream Equipment |
Because of high corrossion rate , the air quality is not good resulting in frequent breakdown of pneumatic cylinders, valves and othe accessories |
Because of high corrossion rate , the air quality is not good resulting in frequent breakdown of pneumatic cylinders, valves and othe accessories |
Because of low corrossion rate and better air quality, it helps in improving the life of downstream pneumatic cylinders, valves and othe accessories, resulting on higher availability of equipment, thus resulting in maximum productivity and lower maintenance cost of the down stream equipments |
| 7 |
Installation |
Needs long time and lots of labour is involved almost 40-50% |
Needs long time and lots of labour is involved almost 40-50% |
Fastest and labour cost involved is about 10% only. No specialised manpower is required |
| 8 |
Fire Hazard |
maximum, during welding and repair works |
Not in case of thread joints but in case of welded joints fire hazard is as good as in case of MS |
No fire hazard at all since no welding is required |
| 9 |
Maintenace cost of piping system |
Needs leakage test every six months and painting atleast once a year |
Needs leakage test every six months and painting atleast once a year |
No maintenace cost for next ten years |
| 10 |
Modularity |
Non modular, normally not usable after you shift your plant or change location of equipments within plant |
Non modular, normally not usable after you shift your plant or change location of equipments within plant |
Modular, could be dismantled within hours and shifted to another place without wastages |
