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Advantages & Disadvantages of Material

Advantages and Disadvantages of Materials

Material Advantages Disadvantages Limitations
Carbon Steel
Lowest Capex
Cheapest option
Opex Involves inspection
pigging
Internal corrosion control
through inhibition
Corrosion rates are high
Possibility of intelligent
or coating
Additional Opex through inhibition
High corrosion
(pigging) and external painting
Carbon Steel with FBE Capex slightly more
Low Opex
Internal corrosion
protection through
lining
Susceptible for corrosion if
FBE coating is damaged
Coating gets damaged if fluid
contains suspended solids
Coating holidays
Carbon Steel with PE lining Capex is slightly more than
CS + FEB
Internal corrosion
protection through lining
Not advisable for gas lines
lining collapse due to
depressurization
Operating Temperature limited
to 65 Deg max
Operating temp 65 Deg max
Stainless Steel No corrosion Opex is low External corrosion protection
through coating
Not suitable for fluid where
chloride are present
Chlorides in fluid
Duplex Stainless Steel No corrosion
Opex is low
High Capex
Susceptible to stress cracking
in the operating range of 80
to 120 Deg C
Long lead time for procurement
Operating temp
GRE No operating Expenses
No corrosion
Medium Capex
Limitation due to temperature pressure
Inspection limitation
Line to be buried only
No pigging possible
Temp & Pressure
CS + CRA internal clad No corrosion
Can tolerate highly
wet sour conditions
High Capex
materials Sourcing problems
Welding

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