SMS Centrifugally Cast Ductile Iron Pipes

Material: Ductile Iron



SMS Centrifugally Cast Ductile Iron Pipes are in complience with the following

standards

STANDARDSSMS Centrifugally Cast Ductile Iron Pipes are in complience with the following

standards: - Ductile Iron PipesISO 2531: 1998 Ductile iron pipes, fittings, accessories and their joints

EN 545: 2002 Ductile iron pipes, fittings, accessories and their joints for water pipelines

EN 598: 1994 Ductile iron pipes, fittings, accessories and their joints for sewerage application



- Coatings and LiningsISO 8179- 1: 1995 Ductile iron pipes - External zinc coating - Part 1: Metallic zinc with finishing layer

ISO 4179: 1985 Ductile iron pipes for pressure and non- pressure pipelines - Centrifugal cement mortar lining

ISO 8180: 1985 Ductile iron pipes - Polyethylene sleeving







MATERIAL CHARACTERISTICSMinimum tensile strength (MPa) 420 MPa

Minimum elongation percent after fracture 10 for DN 80 to 1000

7 for DN 1100 to 1600

Maximum hardness 230 HB



WALL THICKNESSThe nominal iron wall thickness e of the pipes is given by,

e= K (0, 5 + 0, 001DN) Where DN is the nominal diameter, and

K is a coefficient represents the thickness class of the pipe.

Standard SMS centrifugally cast ductile iron pipes are of thickness class K= 9. For other class of thickness please consult us.



TOLERANCES ON DIMENSIONSThe tolerances on nominal wall thickness of centrifugally cast pipes are as follows: For Tolerance There is no limit for upper limit (+ tolerance) in order to be in the safe side considering internal pressure resistance.

e= 6- 1, 3

e>6- (1, 3+0, 001DN)









Tolerances on lengths are as follows:



Push- on type pipes ?30 mm

Flanged pipes ?10 mm





Pipe straightness shall have a maximum deviation of 0, 125 of the length of the pipe.

COATING AND LINING All pipes are coated by metallic zinc with a bituminous finishing layer. Besides metallic zinc coating with a bituminous layer provides all the protective needs for most of the type of soils;

for severely corrosive soils polyethylene sleeving can be supplied.



All pipes are internally lined with centrifugally applied cement mortar lining.