Zinc Coating           Cement Lining

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 FLANGE PIPES

  • Flange  pipes  are  class K9,  centifugally  cast  with welded flanges  PN  10,  16  or 25  (PN 40  for  diameter   <  or  =  300).   The  gasket  for  flanges  are   normally   EPDM   Elastomer    rubber    as    per   ISO  4633.   The   normal  gasket  can   be  improved by steel reinforced rubber gasket.

flangepipe.jpg (13396 bytes)

FLANGED DUCTILE IRON PIPES(K9)

Nominal Diameter Barrel Masses
DN Iron thickness e (K9) mm OD mm Barrel per meter kg/m of two flanges
PN10 kg PN16 kg PN25 kg PN40 kg
80 6.0 98 14 6.4 6.4 6.4 6.4
100 6.1 118 17.4 7.4 7.4 8.4 8.4
150 6.3 170 26.2 12.1 12.1 13.7 17.6
200 6.4 222 35.2 19.5 17.0 20.5 30.0
250 6.8 274 45.9 27.0 24.5 31.0 -
300 7.2 326 57.6 34.5 36.0 48.5 -
350 7.7 378 76.4 41.0 49.0 65.0 -
400 8.1 429 90.6 50.0 61.0 85.0 -
500 9.0 532 123.1 69.0 98.0 126.0 -
600 9.9 635 159.7 98.0 151.0 179.0 -

These pipes can be supplied in all lengths between 0.5m and 5.9m.

PE SLEEVES

  • Polyethylene     sleeve    200   micron    thickness  in accordance    with    ISO  8180 and AWWA C - 105.

  • note: Sadip  can  offer different specification or coating as per customer requirement.

SADIP RELIABLE COATING

ZINC COATING

  • All   SADIP   pipes and   fittings are coated externally 200 g/m2  which represents  50%  increase over  ISO  standards,   then  zinc    coating  is its  capacity  for   restoring the continuity of  the   protective  layer  at  points where it  is  locally  damaged .   The   zn ++   ions  migrate  to  plug  the damaged   area  and  are  then  converted into  stable insoluble zinc products as shown below.

  • Zinc   coating  is  considered  the  built  in  Cathodic Protection due to the huge amount of zinc distributed uniformly  all  over  the  pipe. The table below shows amount of zinc in kgs over 1 km of the pipe.

PIPE SIZE

PER 1 KM Kg.
MM INCH
DN 100 4 63
DN 150 6 95
DN 200 8 126
DN 250 10 156
DN 300 12 190
DN 400 16 252
DN 500 20 315
DN 600 24 375

CEMENT LINING

  • SADIP   is   applying   cement  lining  internally  by a centrifugally   process,   in    which    the   mortar  is introduced  into  the  pipe and rotates at high speed, giving excellent compaction. The lining is then cured under controlled temperature and humidity giving it the optimum mechanical strength and also producing a very smooth surface, which reduce head losses and guarantees long-term hydraulic efficiency.

  • Cement Lining is an active coating, When the pipe is filled,  the  mortar  gradually  absorbs  water,  which becomes     enriched     in     Alkaline    substances. Consequently, it is non-corrosive when it reaches the proximity  of  the  metal  wall.  Also,  cement  lining demonstrated  the  ability  to  withstand  limited pipe deflection   and   good   performance under high top loads.