Ductile Iron Pipes. Ductile Iron pipes, fittings and accessories shall be fitted with spigot and socket rubber ring joints and shall comply with the relevant requirements of BS, EN 545: 2010 and ISO 2531- 2009. The following documents form a part of this Specification to the extent specified herein. In any case of conflict, the requirements of this Specification shall prevail. The latest issues shall apply.
Ductile Iron Pipes. Ductile Iron Pipes conforming to IS : 8329 (with latest amendment, prevalent at the time of execution) for water with Socket & Spigot ends and push-on-joints in standard working lengths of 5.5m/6.0m of requisite pressure Class (K-9 & K-7), suitable for Push-on-joints (Rubber Gasket Jointing) with cement mortar lining inside the pipes (with Portland cement conforming to IS:8112) and Zinc coating with a finishing layer of Epoxy Resin (Blue Epoxy) on external surfaces manufactured by only Approved Original Manufacturer of the Country having proven track record of atleast 10 (Ten) years manufacturing experience of DI Pipes & 8 (Eight) years of satisfactory performance in Indian Water Supply Projects. All Ductile Iron Specials viz., Bend, Tee, Reducer, Enlarger, Flanged Spigot/Spigot, Collar, End, End Cap etc., should also be supplied by the manufacturer of the Pipes. An Authorization Letter from the Original Pipe Manufacturer must be enclosed with the Tender. Authorization Letter should be valid for the entire period of execution of the order failing which Bid shall not be considered for evaluation and offers shall be rejected straightway. Each pipe shall have as cast or stamped or legibly and indelible painted. The marking shall show the following: (i). The manufacturer’s Name or Trademark; (ii). The nominal diameter of Pipes; (iii). Year of Manufacture; (iv). Batch number; (v). Class of Pipes; (vi). ISI certification mark on pipe; (vii). Any important information that the Manufacturer deems fit to be inscribed on pipe & (viii) Name of Owner (PHED, Meghalaya). Contractor has to arrange for submission of the Manufacturer’s test certificate of all pipes and fittings to be used in the proposed Scheme and obtain approval of the Department prior to procurement and use in the Project. IS: 8329 – 2000 Centrifugally cast (spun) Ductile Iron pressure pipes for water, gas and sewage - Specification IS: 5382 - 1985 Specification for Rubber sealing rings for gas mains, water mains and sewers. IS: 3400 Methods of test for vulcanized rubbers (Part 1- 23 - latest revisions) IS: 13655 – 1993 Guidelines for Heat Treatment of Cast Iron. IS: 1500 – 2005 Methods for brinell hardness test for metallic materials. IS: 9523 – 2000 Ductile Iron fittings for pressure pipes for Water, Gas & Sewage – Specification. IS: 12288 – 1987 Code of practice for use and laying of Ductile Iron Pipes. IS: 2062 – 1999 Steel for General Structural purposes – Specification.
Ductile Iron Pipes. Ductile iron pipes and fittings shall comply with ISO 2531. The nominal diameters of ductile iron are 80 to 2000mm. The pressure rating of ductile iron is K9 range, with the nominal pressure of 3200 kPa. A safety factor of 4 times the working pressure shall be used for ductile iron pipes. An integral rubber ring socket and spigot is used for the jointing. Ductile iron pipes shall have a inner lining of alumina cement mortar.
Ductile Iron Pipes. IS: 8329 - 2000 Centrifugally cast (spun) Ductile Iron pressure pipes for water, gas and sewage – Specification IS: 5382 - 1985 Specification for Rubber sealing rings for gas mains, water mains and sewers.
