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Column Pipe

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. SPECIFICATIONS
  • Maximum Installation Depth: 370 meters
  • Installation: Vertical, Horizontal or inclined
  • Maximum ambient temperature: 70°C
APPLICATIONS
  • 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

INSTALLATION
  • Ajay uPVC Column Pipes are lighter, they are easy to handle, transport and install, as compared to other pipes

DESIGN
  • Specifications followed: ASTM - D-1785, IS:12818 & IS:5382
  • Internal & external threading ensure easy & reliable jointing
  • Extremely smooth surface finish results in reduced friction & water loose

ADVANTAGES OF AJAY uPVC RISER / DROP / COLUMN PIPE









  • 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

TYPES
  • Medium Class :- For wells with depth upto70m (blue colour)
  • Standard Class :- For wells with depths upto 180m (red colour)
  • 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 /COLUMN PIPES

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.

BI-AXIAL ORIENTATION

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 Development.

THICK ENDS

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 Drop/Riser/Column Pipes 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.
Light weight 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.
Long life 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.


Ajay® uPVC Column Pipe Load Carrying capacity in normal conditions, (in Kgs.) &
Safe allowable hydrostatic pressure (in kgf/cm²) in normal conditions
Size »
Type  »
25mm
(1")
32mm
(1-1/4")
40mm
(1-1/2")
50mm
(2")
65mm
(2-1/2")
80mm
(3")
100mm
(4")
125mm (5")
Medium Duty 770
(16 kgf/cm²)
1250
(15 kgf/cm²)
1340
(15 kgf/cm²)
1600
(13 kgf/cm²)
2050
(10 kgf/cm²)
2800
(11 kgf/cm²)
4150
(10 kgf/cm²)
_
Standard Duty 1325
(30 kgf/cm²)
1540
(25 kgf/cm²)
1720
(26 kgf/cm²)
2260
(20 kgf/cm²)
2750
(16 kgf/cm²)
4100
(17 kgf/cm²)
5760
(15 kgf/cm²)
9100
Heavy Duty 1520
(35 kgf/cm²)
1960
(35 kgf/cm²)
2050
(35 kgf/cm²)
2900
(27 kgf/cm²)
4300
(26 kgf/cm²)
5800
(26 kgf/cm²)
9600
(25 kgf/cm²)
14000

ADOPTERS (CONNECTORS)

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

Pump Guard can be used between bottom pipe & bottom adaptor (connector). Pump guard is recommended for the areas where excessive pump viberations are observed.