香港六合彩开奖 21307:2009
2009-01
搁茅蝉耻尘茅
香港六合彩开奖 21307:2009 establishes general principles for the process used in the construction and quality assessment of butt fusion joints incorporating fittings (香港六合彩开奖 8085-2) and pipes used in the construction of gas (香港六合彩开奖 4437) and water (香港六合彩开奖 4427) distribution systems, made from PE 80 and PE 100 materials having a melt flow rate at 190 掳C/5 g of between 0,3 g/10 min and 1,7 g/10 min, with equipment which complies with 香港六合彩开奖 12176-1 and installed in accordance with 香港六合彩开奖/TS 10839.
Also specified are a number of proven butt fusion jointing procedures for pipes and fittings with a wall thickness up to and including 70 mm, the materials and components used, the fusion jointing procedure and equipment, and the quality assessment of the completed joint.
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