ISO2531/ EN545 ductile iron pipe k9/c25/c30/c40
Specification
1) The standard of pipe: ISO 2531, EN545 , EN598. | 2) Pipe class: K9, C40, C30, C25, etc. |
3) Pipe joint: push-on joint(Tyton joint), K type joint, self-restrained joint | 4) Effective length: in general, the pipe length is 6m for bulk shipment and 5.7m for container shipment. |
5) Internal lining: cement mortar lining as per ISO4179 | 6) Zinc coating: at least 130g/m2 as per ISO 8179 |
7) Bitumen painting: at least 70um as per ISO 8179 | 8) Gaskets are NBR rubber, natural rubber, SBR rubber or EPDM rubber ring as per ISO4633 |
9) DN 80 - 2,600 mm | 10) High strength, lighter than gray iron, good corrosion resistance, no furring, small flow resistance, easy fixing, long life time |
11) Checked by automatic inspection equipment | 12)Chemical composition: (%) |
13)Mechanical properties | C: 3.5 - 4.0 |
Tensile strength: ≥420MPa | Si: 1.9 - 2.6 |
Yield strength: ≥300Mpa | P: <0.06 |
Hardness: ≤230HB | Mn:0.15 - 0.45 |
Elongation%: DN80 - 1000 ≥10 DN1200 - 2200 ≥7 | S: <0.02 |
14) Process and testing: | a) Induction furnace and treated metallic (Chemical analysis of raw material, spheroidizing & Nodularity) |
b) Casting (Visual check and weight check) | c) Heat treatment (Micro structure) |
d) Hydrostatic test (Pressure test) | e) Dimensional checks (Checking pipe length and joint, OD, wall thickness, appearance) |
f) Zinc spraying (Thickness testing) | g) Lining and coating (100% visual check, thickness testing randomly) |
i) Marking and packing (100% visual check) | 15) The pipe coating can be customized, such as, zinc-aluminum alloy, PU, etc. |
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