Ductile Iron Pipes
Specifications:
Size : DN 80 - 1,200 mm
Standard : ISO 2531 -1998, EN545-2006 ,EN598-2007 K8/k9
Effective length: 6M , 5.7 or 5.6 m
Process : centrifugal casting .
Coating : Cement lining inside ( Portland cement line as per ISO4179 ) , Zinc ( at least 130gsm as per ISO 8179) and bitumen coating (at least 70um as per ISO 8179 )outside .
Accessories : Gaskets are NBR ,SBR,or EPDM rubber , tightness ring as per ISO4633
Chemical composition
Chemical composition Ductile Cast Iron Pipe(%) Grey iron pipe(%) Steel pipe(%)
C 3.5-4.0 3.2-3.8 0.1-0.2
Si 1.9-2.6 1.4-2.2 0.15-0.4
Mn 0.15-0.45 0.4-0.6 0.3-0.6
P less than 0.06 less than 0.3 0.02-0.03
S less than 0.02 less than 0.1 0.02-0.03
Mg 0.03-0.06
Process and testing:
a) Blast furnace (Analysis of raw materials test )
b) Mg treatment (Micro & chemical composition test)
c) Pipe spinning (Temperature test)
d) Heat treatment (Micro structure; Flattening test)
e) Zinc coating (Thickness testing)
f) Dimensional checks (Thickness & Dia. testing)
g) Hydraulic test (Pressure test)
h) Internal lining (Thickness testing)
i) External coating (Thickness test)
Mechanical joint pipe and fittings are also available.
Packing: 20 , 40 or bulk shipment .