Standard English sizes are calibrated in inches and
their size ranges from 1/8" to 36".
Pipe Thread - Male
In this category, tapered pipe threads like NPT,
BSPT etc are used which are basically for the
purpose of sealing without gaskets.
Pipe Thread - Female
Pipe Thread - Female is same as Pipe Thread - Male.
Here too, tapered pipe threads such as NPT, BSPT,
etc are used which is specifically for sealing
Straight Thread -
Male Straight pipe threads such as UNC, UNF, ASME,
etc form Straight Thread - Male.
Straight Thread -
Female Straight Thread - Female also includes
straight pipe threads such as UNC, UNF, ASME, etc.
Plain End is used to insert into the bell end of the
Bell / Socket / Flare
It is the end length of increased diameter into
which a pipe end can be fitted.
There are two types of flanges, circular and square.
These are used to connect fitting, typically via
bolting or welding.
Compression fitting includes compression nut and ferrule
by which it connects to a mating pipe.
Pipe Clamp End
Pipe Clamp End is designed in such a way so that it is
attached to run on pipe or other fitting.
Barb / Rib
Barbs and ridges comprise fitting ends. They connect
only non-rigid pipe or hose, or sometimes used with a
Groove is for the
of a coupling feature such as an o-ring or elastomeric
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,
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
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:
- Clean and prime.
- Coated with asphalt enamel.
- Wraped with forty-pound felt or Kraft paper.
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.