acid-resisting fittings

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Dur|i|ron — «DUR Y uhrn, DYUR », noun. Trademark. an acid resisting alloy of steel containing about 14 per cent silicon. It is cast into pipes, valves, fittings, etc., for use in industries handling acids … Useful english dictionary
Cross-linked polyethylene — PEX redirects here. For other uses, see Pex (disambiguation). Cross linked polyethylene, commonly abbreviated PEX or XLPE, is a form of polyethylene with cross links. It is formed into tubing, and is used predominantly in hydronic radiant heating … Wikipedia
metalwork — metalworker, n. /met l werrk /, n. objects made of metal. [1840 50; METAL + WORK] * * * Useful and decorative objects fashioned of various metals. The oldest technique is hammering. After с 2500 BC, casting was also used, molten metal being… … Universalium

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