Internal Cement Lining Flanged Ductile Iron Pipe external Zinc And
Bitument
Flanged Ductile Iron Pipe:
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.The lengths of flanged pipes
shall be as given in Table 5. Other lengths are available by
agreement between the manufacturer and the purchaser.
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.
Standardized lengths of flanged pipe
| Type of pipe | DN | Standardized lengths, La |
| With cast-on flanges | 40 to 2600 | 0,5 or 1 or 2 or 3 or 4 |
| | 40 to 500 | 2 or 3 or 4 or 5 |
| With screwed-on or welded-on flanges | 600 to 1000 | 2 or 3 or 4 or 5 or 6 |
| | 1100 to 2600 | 4 or 5 or 6 or 7 |
| 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
Production Process:
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.
