Ductile pipe - - Rigid interface

by:XEX     2021-02-14
Ductile pipe - - Rigid interface lining: using cement mortar lining, coating adhesion, after water penetration rate is small, good chemical stability, construction is convenient. Cement lining in accordance with GB/T 17457-1998 standard and GB/T 17219-1998 standard request, the cement mortar lining material inspection by national legal units, all radioactive substances content accord with the requirement of national standard GB6566-2001, to ensure that the buyer water quality meet the requirements of relevant national standards. Outside the anti-corrosion: outside the pipe anticorrosion USES besmear brushs zinc-rich coating, accord with the requirement of ISO8179-2. Choose asphalt coating finishing coating, in line with the requirements of GB/T17459. Flexible interface fitting socket and the socket embalmed: in the flexible interface fitting socket and the socket on the working plane, clean before coating, after thorough cleaning, besmear brushs zinc-rich paint besmear again after epoxy resin paint material: the material of pipeline for ferritic matrix of nodular cast iron, in the organization have a certain number of nodular graphite, compact structure, easy cutting, drilling, in line with the requirements of GB/T13295-2008. Chemical composition: the P content of ductile iron pipe 0 or less. Content of 05%, S 0 or less. 015%. Mechanical properties, tensile strength of 420 mpa, or higher yield strength 300 mpa, or elongation of 5% or more, or less hardness 250 HBS. Hydrostatic test pressure sealing: ductile iron pipe fittings before they leave the factory 2. 5 mpa, sweating and ensure no leakage or other damage. Surface quality: internal and external surface is smooth, smooth level off, the outline is clear, no cracks, at the cold, mismatch, get in the way of using obvious flaws, who make the wall thickness thinning allow partial defects exist, but shall not exceed the depth ( 2 + 0. 05年t) Mm T for pipe wall thickness. Before coating, pipe surface is bright and clean, no rust, iron and sundry, after coating, the coating surface is smooth, uniform, adhesion strong, is not an exception occurs due to temperature changes.
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