{"id":6248,"date":"2025-07-09T14:42:51","date_gmt":"2025-07-09T06:42:51","guid":{"rendered":"https:\/\/alllandpipes.com\/?post_type=etheme_portfolio&p=6248"},"modified":"2025-12-17T19:09:07","modified_gmt":"2025-12-17T11:09:07","slug":"as-nzs-1579","status":"publish","type":"etheme_portfolio","link":"https:\/\/alllandpipes.com\/fr\/standards\/as-nzs-1579.html","title":{"rendered":"AS\/NZS 1579"},"content":{"rendered":"
\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Technical Overview: AS\/NZS 1579 – Arc-Welded Steel Pipes and Fittings for Water and Wastewater<\/b><\/strong><\/span><\/h2>

1. Definition and Scope<\/b><\/strong><\/span><\/h3>

Standard<\/b><\/strong>: AS\/NZS 1579 (latest edition:\u00a0AS 1579:2001<\/b><\/strong>) specifies requirements for\u00a0arc-welded steel pipes and fittings<\/b><\/strong>\u00a0with butt welds, used in water supply, wastewater systems, and piling applications.<\/p>

Applications<\/b><\/strong>:<\/p>

Pressurized water\/wastewater transport (up to\u00a06.8 MPa<\/b><\/strong>).<\/p>

Structural piling (e.g., foundation support).<\/p>

Product Range<\/b><\/strong>: Pipes with nominal diameters \u2265\u00a0DN 100 mm<\/b><\/strong>\u00a0(4 inches).<\/p>

2. Key Requirements<\/b><\/strong><\/span><\/h3>

Dimensions and Tolerances<\/b><\/strong><\/p>

Diam\u00e8tre<\/b><\/strong>: DN 100 mm and above. Exact size ranges are tabulated in the standard (e.g., DN 100\u2013DN 3000+).<\/p>

\u00c9paisseur de la paroi<\/b><\/strong>: Varies by pressure class; minimum thickness defined to withstand operational stresses.<\/p>

Tolerances<\/b><\/strong>\u00a0(typical examples, based on industry norms):<\/p>

Param\u00e8tres<\/b><\/strong><\/td>Tolerance<\/b><\/strong><\/td><\/tr>
Diam\u00e8tre ext\u00e9rieur (OD)<\/td>\u00b11.0% of nominal OD (min. \u00b10.5 mm)3<\/td><\/tr>
\u00c9paisseur de la paroi<\/td>\u00b110% of nominal thickness3<\/td><\/tr>
Rectitude<\/td>\u22640.2% of pipe length<\/td><\/tr>
Longueur<\/td>+0\/+150 mm for cut lengths1<\/td><\/tr><\/tbody><\/table><\/figure>

3. Material and Performance Grades<\/span><\/h3>

Steel Grades<\/b><\/strong>: Not explicitly detailed in search results, but typical grades include\u00a0AS\/NZS 3678 (e.g., Grade 250, 350)<\/b><\/strong>\u00a0for weldability and corrosion resistance.<\/p>

Propri\u00e9t\u00e9s m\u00e9caniques<\/b><\/strong>\u00a0(representative values):<\/p>

Propri\u00e9t\u00e9<\/b><\/strong><\/td>Minimum Requirement<\/b><\/strong><\/td><\/tr>
Limite d'\u00e9lasticit\u00e9<\/td>250\u2013350 MPa (varies by grade)<\/td><\/tr>
R\u00e9sistance \u00e0 la traction<\/td>410\u2013480 MPa<\/td><\/tr>
\u00c9longation<\/td>\u226520% (ensures ductility under pressure)<\/td><\/tr><\/tbody><\/table><\/figure>

Composition chimique<\/b><\/strong>:<\/p>

Limits for\u00a0Carbone (C)<\/b><\/strong>,\u00a0Mangan\u00e8se (Mn)<\/b><\/strong>,\u00a0Soufre (S)<\/b><\/strong>,\u00a0Phosphore (P)<\/b><\/strong>\u00a0to ensure weld integrity and corrosion resistance (e.g., S \u2264 0.03%, P \u2264 0.03%).<\/p>

Testing and Inspection<\/p>

Compulsory inspection for quality and safety:<\/p>

Hydrostatic Test:<\/p>

Each pipe was tested at \u22651.5x design pressure (minimum). 10.2 and 6.8 MPa systems).<\/p>

Duration: \u22655 seconds without leakage.<\/p>

Essais non destructifs (END) :<\/p>

Radiographic\/ultrasonic testing in case of welds for crack\/imperfections1.<\/p>

Dimensional Checks:<\/p>

OD, wall thickness, straightness, and length confirmed to within tolerances.<\/p>

Inspection visuelle :<\/p>

Possible surface imperfections (e.g. Cracks, undercuts) shall meet the acceptance standards.<\/p>

4. Ancillary Requirements<\/span><\/h3>

Linings\/Coatings<\/b><\/strong>: Optional cement mortar lining per\u00a0AS 1281<\/b><\/strong>\u00a0for corrosion protection.<\/p>

Fittings<\/b><\/strong>: Must match pipe material and pressure ratings (e.g., elbows, reducers).<\/p>

Marking<\/b><\/strong>: Each pipe marked with:<\/p>

Standard number (AS 1579:2001).<\/p>

Manufacturer ID.<\/p>

Size (DN), pressure rating, and heat number.<\/p>

5. Evolution and Current Status<\/span><\/h3>

Versions:<\/p>

1973: Covered water\/gas pipelines.<\/p>

1993: Expanded to wastewater and piling.<\/p>

2001 (Revision): Unified specimen and test procedures and reference standards such as AS 1199 (sampling) and AS 1646 (seals).<\/p>

Superseding Status: AS 1579:2001 is active and replaces all older versions.<\/p>

Importance in Infrastructure<\/p>

Guarantees a durable performance under high pressure (for example, municipal water systems).<\/p>

Leads to standardized connection between pipes\/fittings at different projects.<\/p>

Essential for hazardous locations (i.e., wastewater with H2S gas)<\/p>

6. Conclusion<\/span><\/h3>

AS\/NZS 1579:2001<\/b><\/strong>\u00a0is the standard that defines their acceptance for arc-welded steel pipes in Australian and New Zealand water\/wastewater industry. It requires strict material, dimension and testing stipulations to guarantee that the product is suitable for use in high pressure systems. The standard provides the metal tolerances, core tolerances are included (ID \u00b11 mm, OD \u00b11%, wall thickness \u00b110-12%, but overall toleramces are precise on mechanical\/chemical aspect only including skin pass rolling, but filled party may vary (supported by referenced material standards such as AS\/NZS 3678). Engineers need to comply with its compliance & safety.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t

Produits apparent\u00e9s<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t
\n \n \n <\/i> <\/span>\n \n\t\t\tVoir tous les produits<\/span>\n\n \n \n <\/span><\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t
\n
\n
\n
\n
\n \n
\"Tube<\/a>