Two Ends Flanged 100mm Ductile Iron Pipe Internal Cement Lining
External Zinc
Flanged Ductile Iron Pipe overview:
Flanged joints shall be designed to facilitate attachment to
flanges whose dimensions and tolerances comply with ISO 7005-2 or
EN 1092-2. This ensures interconnection between all flanged
components (pipes, fittings, valves, etc.) of the same DN and PN
and adequate joint performance. Bolts and nuts shall comply, as a
minimum, with the requirements of ISO 4016 and ISO 4034, property
class 4.6. Where washers are required,they shall comply with ISO
7091.In order to demonstrate their strength and leaktightness in
service conditions, flanged joints shall be subjected to a type
test. When tested as specified in 7.4, they shall show no visible
leakage under the combined effects of a hydrostatic internal
pressure and a bending moment as given in Table 10, where the
pressure is (1,5PN + 5) bar, the relevant bending moment is
obtained by addition of the bending moments due to the weight of
the components and of the water in the test assembly and those due
to a possible external load calculated as a function of the length
of the unsupported span of the testing arrangement.A type test
shall be carried out on each type of flange joint available from
the manufacturer in accordance with requirement.
| 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.
Our advantages:
There are lots of qualified managers and technicians, and a
well-trained team of after-sales service, which provides all
services of manufacture, package, transportation and installation.
We are looking forward to cooperating with friends from abroad and
home creating a brighter future.
