Lined Pipe Fittings
In order to protect pipes against the unwanted deterioration and to enhance the properties of the fittings, there are a number of lining options that are avaiable in the market. Lined pipe fittings are manufactured with an integral lining that are mostly made from engineered polymers used with process materials or with other applications like food processing. It is done taking into consideration the importance of cleanliness and hygiene factors.

The lining material selected for the service is generally inert and has suitable and broad temperature ranges. Most severe service applications can be handled by using corrosion and abrasion resistant ceramic materials. Some of the popular lining products are PP, PVDF, ECTFE, ETFE, PTFE, PFA, MFA etc.

Plated Pipe Fittings
Pipe fittings are that are plated with different materials in order to impart the required properties are called plated pipe fittings. These are mostly plated with materials such as nickel and chrome.

These platings are used to prevent corrosion and also to improve the exterior appearance of the pipe. They also help in increasing the longetivity of the pipes and it is enhanced significantly if the plating is done with a durable material of good quality.

Underground Rated Pipe Fittings
These pipe fittings are designed and constructed for underground application. Since the application of these pipes is below the ground, some rules have been formulated. It is mandatory that underground piping shall be buried not less than 18 inches below the surface of the ground unless otherwise protected, and shall be adequately coated or otherwise protected against corrosion. Pipe coated as follows will be considered acceptable if it is:

Though materials like PVC or CPVC can be used, it is advisable to use ABS as it a heavy-duty plastic pipe and can successfully meet the requirements of underground drainage and sewer applications.