Ajay is the pioneer to design, develop and market
uPVC Riser/Drop/Column that are being successfully used in the erection of
submersible borehole pumps up to depth of 1000 feet. Ajay Submersible column
Riser pipes are produced on modern machines and threaded on advanced fully
automated precision CNC machines. Ajay adopts a stringent Quality Control
Management System, with state of the art laboratory set up.
Riser Pipe For Submersible Pumps
- Maximum Installation Depth: 370 meters
- Installation: Vertical, Horizontal or inclined
- Maximum ambient temperature: 70°C
- Water rising for submersible and jet pump for irrigation, domestic,
industrial mining, chemical distribution etc.
- A good substitute for MS, ERW, GI, HDPE & SS column pipes
- Ajay Upvc Column Pipes are nearly inert towards corrosion, chemical
reaction and erosion. Hence, it is ideally suited for long term use in
salty, sandy and chemically aggressive water
- Ajay uPVC Column Pipes are lighter, they are easy to handle,
transport and install, as compared to other pipes
- Specifications followed: ASTM - D-1785, IS:12818 & IS:5382
- Internal & external threading ensure easy & reliable jointing
- Extremely smooth surface finish results in reduced friction &
ADVANTAGES OF AJAY uPVC RISER / DROP / COLUMN
- Long Life
- Light in Weight
- Power & Energy Saver
- Rigid with high impact resistance
- No rusting, corrosion or deterioration
- Easy Installation & low installation costs
- 10 to 30% extra water discharge compared to steel pipes
- Cost Saver, Relatively cheaper than conventional GI/ERW pipes
- 100% leak proof. EPDM 'O' Rings are used for joints & also absorb
jerks when the pump is switched on or off
- Specially designed Square threaded profile of Ajay® Column Pipes
can bear maximum load in a bore well environment. These pipes can be
assembled and dismantled very easily and quickly
- Medium Class :- For wells with depth upto70m (blue colour)
- Standard Class :- For wells with depths upto 180m (red
- Heavy Class :- For wells with depths upto 370m (green colour)
- Super Heavy Class :- For wells with depths upto 370m (For
Pressure rating 35 kgf/cm²)
TECHINICAL FEATURES OF AJAY uPVC RISER / DROP
PVC PIPE JOINT SYSTEM WITH COUPLER
The pipes are joined together by a coupler. The couplers are fitted on the
pipe sizes from 33mm OD (1") up to 140mm OD (5").
THREADING: SQUARE TYPE
The joint of pipes have been specially designed with square threads to
ensure proper gripping and no chance of slipping. These threads are high
friction threads, which do not open even on constant forward and reverse
torque generated by starting & stopping the pump. They are made on
special CNC machines with high accuracy tools to ensure perfect dimensions
and good & easy fitment. All threads are checked thoroughly with gauges
to ensure 100% accuracy.
LEAK PROOF RUBBER RING
An outer rubber ring is provided on one side of the pipe and an inner
rubber ring is provided in the Socket side of the pipe, which ensures a 100%
leak proof joint.
We have developed a unique Bi-axial orientation technique used during pipe
extrusion, which gives higher drop impact and notch impact strength to the
pipes. This orientation technique is a result of our constant Research and
This is an innovative technique for making pipes thicker on the threading
end to compensate for material removal due to threads.
The residual thickness in the end part after removal of thread is the same
as pipe thickness, Therefore the pipe strength remains the same. This
technique provides much higher strength to the pipes.
SPECIAL FORMULATION / COMPOSITION
A proper combination of perfect uPVC is made with the adequate &
specially designed formulation of resin, heat stabilizers, lubricants,
processing aids, impact modifiers and essential additives. All ingredients
and process parameters taken in the correct proportion, results into
increased impact and tensile strengths. As a result, pipes are capable of
handling both internal hydro static pressure as well as vertical tensile
load on the pipes due to the column water and pump weight. The special
formulation ensures that the threads do not break / chip even after
loosening and tightening several times during the life time.
DUAL FUNCTION OF AJAY DROP / RISER PIPE
AJAY Drop / Riser pipes have a dual function to perform. On one hand it has
to withstand the pump delivery hydro static pressure, which is maximum in
the first pipe connected to the pump and may be as high as 35 Kg / cm2 and
on the other hand, the top most pipe bears the load of the entire column
filled with water & pump which may range up to 2 Metric tons. This dual
type of loading application makes this product unique and requires special
manufacturing techniques which are available only with us.
AJAY uPVC riser/drop/column pipes are perfect
replacement to conventional Galvanized Iron pipes used in bore wells and
hold several critical advantages over conventional Mild steel or Galvanized
steel pipes, which are
|Property Requirement for
||AJAY uPVC COLUMN Pipes
||Mild Steel or Galvanized Steel Pipes
|Strong threaded joints
||Specially designed square Threads, which DO NOT
corrode, rust or deteriorate.
||Threads are prone to rust and corrosion easily.
|Leak proof joints
||Rubber seals are provided with the thread at
every joint ensuring 100% leak proof.
||Not pressure tight, No rubber seal & hence
NOT Leak proof.
|Smooth Internal Surface
||Internal surface is smooth, Therefore low head
loss due to friction & results in higher discharge of water.
||Rough internal surface and head loss is high
resulting in less discharge of water.
||Pipes are Light in weight and are easy to
handle, install and remove.
||Pipes are heavy and a great effort is required
for installation or maintenance. Prone to accidents.
||AJAY uPVC Column pipes do not react with acidic
or alkaline water and have a long life in the bore wells.
||Steel pipes are prone to rust, corrosion &
ultimately get damaged and need to be replaced quickly.
Available Sizes & Technical Specifications
uPVC Column Pipe Load Carrying capacity
in normal conditions, (in Kgs.) &
Safe allowable hydrostatic pressure (in kgf/cm²) in normal
Ajay certified high quality Adopters (both top &
bottom) Made of Cast Iron (CI) / Mild Steel (MS) / Stainless Steel (SS) used
with Ajay Column Pipes give true & corrosion proof system.
Pump Guard can be used between bottom pipe &
bottom adaptor (connector). Pump guard is recommended for the areas where
excessive pump viberations are observed.