|Color:||Black||Surface Treatment:||Customers' Request|
|Yield (≥ Mpa):||Min.300||Hardness:||Max.230HB|
iso 2531 ductile iron pipe,
puddle flange pipe
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|
|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
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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