DIN 44874-3-1980 Electrical metal sheated tubular heating elements 6 5 mm and 8 5 mm diameter determination of ageing and overload characteristics《带金属护套的直径范围为 6 5 mm 和 8 5 mm 的管状电热.pdf

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DIN EN 818-7-2008 Short link chain for lifting purposes - Safety - Part 7 Fine tolerance hoist chain Grade T (Types T DAT and DT)(includes Amendment A1 2008) Ge.pdf

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