Water Well Pipes  Αντλητικά Συστήματα  Αγροτικά Μηχανήματα  Μηχανουργικές κατεργασίες  ΕΛΛΗΝΙΚΑ

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 8x10-5
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


PIPES' PVC-U DIMENSIONS*

mm in mm mm mm m Kg/m bar ton
90 3'' 80 5 96 Trapezoid 3-5 2 13 1.4
114 4'' 103.4 5.3 120 Trapezoid 3-5 2.9 7 1.9
125 41/2'' PN7.5 117.6 3.7 127 Trapezoid 6mm 3-5 2.3 1.9 2
PN10 115.4 4.8 129 2.9 4.3
PN12.5 113 6 131 3.6 8.7
140 5'' PN7.5 131.8 4.1 143 Trapezoid 6mm 3-5 2.9 1.9 3
PN10 129.2 5.4 146 3.7 4.4
PN12.5 126.6 6.7 149 4.5 8.6
160 51/2'' PN7.5 150.6 4.7 165 Trapezoid 6mm 3-5 3.7 1.9 3.5
PN10 147.6 6.2 168 4.8 4.5
PN12.5 144.6 7.7 170 5.9 8.5
170 6'' PN9 155.2 7.4 180 Trapezoid 6mm 3-5 5.6 4.5 4
PN12 152.4 8.8 184 6.9 8.5
180 61/2'' PN7.5 169,4 5.3 186 Trapezoid 6mm 3-5 4.7 1.9 4
PN10 166.2 6.9 189 6 4.5
PN12.5 162.8 8.6 192 7.4 8.6
200 7'' PN7.5 188.2 5.9 208 Trapezoid 6mm 3-5 5.8 1.9 4
PN10 184.6 7.7 211 7.5 4.4
PN12.5 180.8 9.6 214 9.2 8.8
219 PN9 203.4 7.8 230 Trapezoid 12mm 3-5 8.3 4.4 7
PN12 198.4 10.3 235 10.5 8.5
225 8'' PN7.5 211.8 6.6 232 Trapezoid 12mm 3-5 7.3 1.9 7
PN10 207.8 8.6 236 9.3 4.5
PN12.5 203.4 10.8 240 11.6 8.5
250 9'' PN7.5 235.4 7.3 259 Trapezoid 12mm 3-5 8.9 1.9 8
PN10 230.8 9.6 263 11.6 4.4
PN12.5 226.2 11.9 267 14.1 7
280 10'' PN12.5 253.2 13.4 301 Trapezoid 12mm 3-5 17.9 7 10
PN16 248 16 306 20.3 9.3
315 12'' PN10 290.8 12.1 333 Trapezoid 12mm 3-5 18.4 4.4 13
PN12.5 285 15 338 22.4 8.6
400 14'' PN10 369.4 15.3 424 Trapezoid 12mm 3-5 29.4 4.4 15
PN12.5 361.8 19.1 432 36.3 8.6

* Other dimensions available on request

SCREENS PVC-U*

EXTERNAL 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
90 3'' 8.5 2.2 9.2 2.5 11 2.8 12 3
114 4'' 8.5 2.7 9.2 3 11 3.5 12 4
125 41/2'' 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 51/2'' 7.5 3.8 8 4 11 5 12 6
170 6'' 7.5 3.8 8 4.5 11 5.5 12 6.5
180 61/2'' 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
219 7.5 5 8 5.5 11 7.5 12 9
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
400 14'' 7 8 8 9.5 10 12 12 15
RIB WIDTH 6.8mm 9.5mm 9.5mm 11mm

* Other dimensions available on request