Plastic PVC-U Water Well Pipes and Screens

As well as metal water well pipes, the V. Liarommatis Company also produces plastic pipes and water well screens. It is the largest plant in Greece, producing geo-drilling pipes as per DIN 4925.

Plastic pipes present the following advantages:

– Exceptional resistance to most acids, alkaline solutions, soil constituents and corrosive ground waters and gases.
– Long operating life and load bearing capacity
– No toxicity; therefore, they are suitable for potable water pumping.
– Zero wear over time.
– Easy installation procedure.
– They are ecological and environment-friendly.

 

The broaching of screw threads on plastic pipes and screens is effected by a special CNC threading machine tool.

The thread type is trapezoid as per DIN 4925, of 6mm – 12mm pitch according to pipe diameter.

This type of thread is the most appropriate for water wells since it displays considerable load bearing capacity.

Manufacturing of plastic screens is carried out by special machine tools, and the screens have a slot width of 1mm – 3mm, transverse to the pipe axis. Moreover, there is the option of using gravel coated screens so that even sand suspended in the water may be contained.

 

Trapezoidal thread DIN 4925 Pitch 6mm-12mm

Connection with socket                                     Connection flush butt jointed

 

  

GENERAL PHYSICAL & MECHANICAL SPECIFICATIONS

SPECIFICATION METHOD UNIT VALUE
Impact resistance, Charpy 20oC ISO R 179 kJ/m 3-4
Yield load DIN 53455 Mpa ≥ 55
Elongation at yield ISO R 527 % 10-65
Modulus of elasticity DIN 53457 Mpa 3.000
(Vicat) softening temperature EN 727 A oC min 82
Longitudinal tension EN 743 % ≤ 5
Linear heat expansion coefficient _ m/moC 8×10-5
Heat conductivity DIN 52612 Kcal/m hr K 0.14
Resistance to internal pressure EN 1452-2
20C/1 hr – 42 Mpa
20C/100 hr – 35 Mpa
60C/1000 hr – 12.5 Mpa
hr ≥ 1
≥ 100
≥ 1000
Electric resistivity DIN 53482 Ω cm > 1014
DIMENSIONS PIPES PVC-U
EXTERNAL DIAMETER CLASS INT. DIAMETER THICKNESS EXT. DIAMETER SOCKET THREAD PIPE LENGTH WEIGHT THREAD TENSILE STRENGHT
mm in mm mm mm m Kg/m ton
125 4 1/2″ PN12.5 113 6 132 Τραπεζοειδές/ Trapezoid 6mm 3-5 3.72 6
140 5″ PN12.5 126.6 6.7 149 Τραπεζοειδές/ Trapezoid 6mm 3-5 4.62 8
PN16 123.4 8.3 152 5.65
160 5 1/2″ PN12.5 144.6 7.7 170 Τραπεζοειδές/ Trapezoid 6mm 3-5 6.05 11
PN16 141 9.5 174 7.37
170 6″ PN12.5 154 8 181 Τραπεζοειδές/ Trapezoid 6mm 3-5 6.9 13
180 6 1/2″ PN10 166.2 6.9 189 Τραπεζοειδές/ Trapezoid 6mm 3-5 6.17 15
PN12.5 162.8 8.6 192 7.6
PN16 158.6 10.7 196 9.32
200 7″ PN10 184.6 7.7 211 Τραπεζοειδές/ Trapezoid 6mm 3-5 7.64 20
PN12.5 180.8 9.6 214 9.41
PN16 176.2 11.9 219 11.49
225 8″ PN12.5 203.4 10.8 240 Τραπεζοειδές/ Trapezoid 12mm 3-5 11.89 26
PN16 198.2 13.4 245 14.57
PN20 191.8 16.6 251 17.73
250 9″ PN12.5 226.2 11.9 266.8 Τραπεζοειδές/ Trapezoid 12mm 3-5 14.54 30
PN16 220.4 14.8 272.6 17.84
PN20 214 18 279 21.43
280 10″ PN12.5 253.2 13.4 300 Τραπεζοειδές/ Trapezoid 12mm 3-5 18.4 43
PN16 246.8 16.6 306 22.42
ΡΝ20 238.8 20.6 314.2 27.50
315 12″ PN12.5 285 15 338 Τραπεζοειδές/ Trapezoid 12mm 3-5 23.10 48
PN16 277.6 18.7 345 28.50
ΡΝ20 268.6 23.2 355 34.70
355 13″ PN12.5 321.2 16.9 382 Τραπεζοειδές/ Trapezoid 12mm 3-5 29.46 54
PN16 312.8 21.1 390 36.17
ΡΝ20 302.8 26.1 400 44.20
400 14″ PN12.5 361.8 19.1 432 Τραπεζοειδές/ Trapezoid 12mm 3-5 37.4 61
ΡΝ16 352.6 23.7 440 46
PN20 341.2 29.4 452 56.15

* Other dimensions available on request

FILTERS PIPES TABLE PVC-U
EXT. DIAMETER SLOT WIDTH
1mm 1.5mm 2mm 3mm
OPEN AREA WATER SUPPLY  OPEN AREA WATER SUPPLY OPEN AREA WATER SUPPLY OPEN AREA WATER SUPPLY
mm in % m3/h/m % m3/h/m % m3/h/m % m3/h/m
125 4 1/2″ 8.5 3 9.2 3.3 11 3.8 12 4.5
140 5″ 7.5 3 8 3.3 11 4.5 12 5
160 5 1/2″ 7.5 3.8 8 4.5 11 5.5 12 6.5
170 6″ 7.5 3.8 8 4.5 11 5.5 12 6.5
180 6 1/2″ 7.5 4 8 4.8 11 5.9 12 7
200 7″ 7.5 4.5 8 5 11 6.5 12 7.5
225 8″ 7.5 5 8 5.5 11 7.5 12 9
250 9″ 7 5 8 6 10 7.5 12 9
280 10″ 7 5.9 8 6.5 10 8.2 12 10.3
315 12″ 7 7 8 7.8 10 9.5 12 11.5
355 13″ 7 7 8 8.5 10 10.5 12 12.5
400 14″ 7 8 8 9.5 10 12 12 15
RIB WIDTH 6.8mm 9.5mm 9.5mm 11mm