BSEN545 ISO2531 Flanged Ductile Iron Pipe Internal / External FBE
Coatings
Flanged Ductile Iron Pipe overview:
Flanged ductile iron pipe with a range of DN80 to DN 2600.belongs
to Ductile iron pipeline systems, including pipes, fittings,
accessories and joints, consist of various materials.When used for
conveying water intended for human consumption, the materials in
contact with the water shall meet the relevant requirements of the
national standards or regulations in the country of use with
respect to effect on water quality.
Internal Lining.
All flanged joints for ductile iron pipes and components shall be
designed in compliance with the requirements, If the design has
been tested and documented by the manufacturer and successfully
used for a minimum of 10 years, the performance of a type test as
specified is only required for significant changes in design which
could adversely affect the performance of the joint. When flanges
are involved, there shall be a type test for at least one DN for
each of the groupings given. The PN to be tested is the highest PN
existing for each flange design. One PN is representative of a
grouping when the performances are based on the same design
parameters throughout the size range. If a grouping covers products
of different designs and/or manufactured by different processes,
the grouping shall be sub-divided. f, for a manufacturer, a
grouping contains only one DN or PN, this DN or PN may be
considered as part of the adjacent grouping provided that it is of
identical design and manufactured by the same process.
Allowable pressures of components with flanged joints |
| Pressure class | Maximum allowable | Allowable site test | Allowable site test |
| PN | operating pressure | pressure | pressure |
| | PMA | PEA | PEA |
| bar | bar | bar | bar |
| 10 | 12 | 17 | 17 |
| 16 | 20 | 25 | 25 |
| 25 | 30 | 35 | 35 |
| 40 | 48 | 53 | 53 |
| Table 3 — Allowable pressures for socketed fittings | |
| Nominal size | Allowable operating | Maximum allowable | Allowable site test |
| | pressure | operating pressure | pressure |
| DN | PFA | PMA | PEA |
| | bar | bar | bar |
| 40 to 200 | 64 | 77 | 82 |
| 250 to 350 | 50 | 60 | 65 |
| 400 to 600 | 40 | 48 | 53 |
| 700 to 1400 | 30 | 36 | 41 |
| 1500 to 2600 | 25 | 30 | 35 |
Packing: in wooden box or pallet, or in bulk
Shipment: in bulk or container
Usage:
Ductile iron pipeline systems, including pipes, fittings,
accessories and joints, consist of various materials.When used for
conveying water intended for human consumption, the materials in
contact with the water shall meet the relevant requirements of the
national standards or regulations in the country of use with
respect to effect on water quality. When used under the conditions
for which they are designed, in permanent or in temporary contact
with water intended for human consumption, ductile iron pipes,
fittings and their joints shall not have detrimental effects on the
properties of that water for its intended use.
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