GRP Composite Pipes

How Many Types of Layers Used in Making GRP Composite Pipes?

A composite pipe is a multi-layer product that combines the advantages of metal and plastic pipes and eliminates limitations of both materials simultaneously. FRP and GRP pipes are way too different in their construction. The aluminum core in the composite pipe is diffusion tight and prevents environmental gases from entering inside the pipe.

It compensates and lowers snap-back forces and heat expansion with adjustments in temperature. There are composite pipes that consist of an overlapped aluminum core with an inner and outer layer of PE (polyethylene).

Manufacturers bond the layers permanently with the help of intermediate adhesive layers. The thickness of the pipe has been chosen to meet compressive and flexural strength requirements.

GRP Composite Pipes Manufacturers India

GRP Composite Pipes Layers

How composite pipes vary from GI and copper pipes? Why plumbing industry uses composite FRP piping solutions?

There are numerous properties that make composite pipes different from GI (galvanized iron) and copper pipes. Let’s point out them.

Scale Formation

scale formation is higher in galvanized iron pipes. However, copper pipes and composite pipes don’t form scale since they have smooth inner surface.


Iron is corrosive and so the galvanized iron pipes are also prone to corrosion. Copper pipes are also prone to corrosion if the water supplied through it is acidic in nature. Composite pipes do not corrode at all.


Hygiene in galvanized iron pipe is low due to lead content and corrosion. Copper pipes are good with ferrule content but lead content in soldering is still unhygienic. Composite piping, including FRP and GRP pipes are great at hygiene.

Jointing Technique

It is difficult to thread galvanized iron pipes. Copper pipe manufacturers are soldered or ferrule. Composite pipes are easy and can be fit by inserting and tightening the joint.

Working Temperature

Iron pipes and copper pipes can handle 0°-100° C, while composite pipes are great at handling -40° to 95° C.

Heat Aging Resistance

Iron and copper pipes are bad at heat-aging resistance but composite pipes are good at heat aging resistance.

These properties make composite FRP and GRP pipes different from copper and galvanized iron pipes. There are manufacturers offering the best chemical resistant pipes for plumbing and food and beverages industry.

These piping systems can be installed in walls and ceilings or surface mounted. These systems only require bending springs for setting. You can call professionals for assistance any time. There are suppliers and manufacturers of FRP Pipes and GRP Pipes offering post sale services to their customers. Talk to them and avail the best deals today.

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