ISO2531 Ductile Iron Pipes
Ductile iron pipe Detailed Description
Specifications:
1) The standard of pipe: ISO 2531 - 1998, EN545-2002 ， K9
2) Effective length: 6M when using bulk shipment way, or about 5.5M or 5.7M when in 20' container shipment way
3) Inner cement line: Portland cement line as per ISO4179
4) Zinc coating: at least 130gsm as per ISO 8179
5) Bitumen painting: at least 70um as per ISO 8179
6) Gaskets are NBR rubber, natural rubber, SBR rubber or EPDM rubber tightness ring as per ISO4633
7) DN 80 - 1,600 mm
8) High strength, lighter than gray iron, good corrosion resistance, no furring, small flow resistance, easy fixing, long life time
9) Checked by automatic inspection equipment
10) Composition:
a) C: 3.4 - 3.7%
b) Si: 2.0 - 2.4%
c) P: <0.08%
d) S: <0.015
11) Pull strength: >420MPa
12) Yield: >10%
13) Hardness: <230HB
14) K type mechanical joint with flange and bolts available
15) 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: in bulk or 20' container
