ISO2531 /En545 Ductile Cast Iron Pipe

Product name: Ductile cast iron pipes
Material: ductile iron
Standard: EN545/ISO2531/BS4772
Usage: potable water
Production process:
1)Molten iron
2)Molten iron purification
3) Heating and sphereodization
4)Spheroidization
5)Centrifugal casting
6)Annealing
7)Zinc sparing
8)Rounding and grinding
9)Hydraulic testing
10) Cement lining
11) Cultivating
12) Bitumen coating
13)Packing

Grade:
K8/K9,K10/K11,K12, or C40/C30
Effective length: 6M for bulk shipment, 5.7M for 20' or 40' container shipment;
Inner surface cement lining conforms  to ISO4179,the cement mortar is firm,dense,smooth and strong adhesion.
  outer surface zinc+bitumen coating according to ISO8179;
Zinc coating: At least 130G/M2, bitumen coating at least 70um.
We also can do the pipes with epoxy coating inside or outside conforms to ISO2531.

Quality control:
#providing the metallographic examination;
#Graphite 6-7class, spheroidization rate  not below 80%
#Mechanical properties:

standard	tensile strength-Mpa	yield strengh-mpa	Bending strength-mpa	Elongation %	brinell hardness-hbs
ISO2531	min.420	min.300	min.590	min.10	min.230

# Carrying out the test on line strictly during production process.
#High strength, lighter than gray iron, good corrosion resistance, small flow resistance, easy fixing, long life time.

Specification for K9 grade:

Dn	OD-mm	wall thickness-mm	total weight =6m
80	98	6.0	76.8
100	118	6.1	95.4
150	170	6.3	145.4
200	222	6.4	194.6
250	274	6.8	255.8
300	326	7.2	326.3
350	378	7.7	405.8
400	429	8.1	485
500	532	9.0	676.8