They are made by adding chemical additives which increase its inertness. These are very durable by its tendency of work. They are easily bended and have a capability to work for a long time
Features:
Excellent finish
High durability
Fine-finish
Sturdy construction
Seamless performance
Tensile and flexible
Corrosion resistant
Leak proof
Immunity to electrolytic or galvanic corrosion
No fungal or biological growth
Less wear resistance
Nominal rates
Dimensionally accurate
Reliability
Quality assured
Easy to install