Inquiry (采购产品): dia ductile iron pipes We are in need of about 5000m of 400mm dia ductile iron pipes and necessary fittings. Please find the detailed list of the pipes and fittings required for our project attached herewith. Please fill in the rates for the items manufactured or supplied by you.The specification of the pipes are as follows:Standard & Codes: Ductile cast iron pipe work shall conform to ISO 2531/DIN 28614, with flanges to ISO 2531/DIN 2532, PN 10 unless otherwise specified.Composition and Class: The metallurgical Composition of the ductile cast iron shall conform to the following requirements (ISO):1. 1.7% to 5% Carbon2. 1.5% to 3% Silicon3. Minimum tensile strength: 420MPa for pipes & 400 MPa for fittings4. Minimum elastic limits: 300 MPa for pipes and fittings5. Minimum elangation at failure: 10% for pipes and 5% for fittings6. Maximum hardness: 230 HB for pipes and 250 HB for fittingsDuctile cast iron socket and spigot pipes and accessories shall be centrifugally casted in accordance with ISO 2531 (1991) Class K9, including the latest relevant revisions, if any, or other internationally accepted standards which ensure equal or higher quality performance. All spun iron pipes and cast iron specials shall be ductile iron unless otherwise described. Watertightness shall be endsured by the push-on joint for the pipes.The pipes of class K9 shall be subject to a hydrostatic pressure test in the factory as follows:- DN 80 to DN 300 : 60 bar- DN 350 to DN 600 : 50 bar- DN 700 to DN 1000 : 40 barInternal lining: The pipes shall be internally lined with a sulphate resisting blast furnace cement mortar. The thickness and the lining shall be in accordance with ISO 4179 (1985). Cement composition shall conform to BS 4027. The Cl/olebrook roughness coefficient of the lining shall be 0.03mm.External Coating: The pipes and fittings shall be externally coated in the factory with a metallic Zinc coat as primer and a black bituminous or black tar based anticorrosive varnish in accordance with ISO 8179 (1985) or synthetic resin or equivalent approved external surfaces to be applied with coatings shall be thoroughly cleaned and prepared immediately prior to the application of the primer paint. After the prime caot application, tests shall be carried out for misses or pinholes on the painted surface. The Zinc for the coat shall be an electrolytic pure zinc of more than 99.9%. The Zinc coat shall be applied by arc gun and the bituminous/tar based coat by an airless gun in at least 2 layers.These are extracts of our specification. Please feel free to ask for any further clarifications that you may require.PLEASE SEE ATTACHED FILE!ductile iron pipes.xls **** Hidden Message ***** Co:Nepal Adarsha Nirman Co Add:Kuleshwor, Kathmandu, Nepal Tel:977-1-4278625 Fax:977-1-4281007 Email:info@nepaladarsha.,com.np,gyanendraraj@gmail.com Contact Person:Gyanendra Raj Pandey Country:Nepal **** Hidden Message ***** info@nepaladarsha.
