A grating covering a drain can be a collection of iron bars ( the identical, elongated elements) held together ( to ensure the bars are parallel and regularly spaced) by a lighter iron frame.....
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Grating can also come in 4 feet ( 121.9 cm) or 2 feet ( 61 cm) x 8 feet ( 243.8 cm) panels which are often used for decks on bridges, footbridges and catwalks. Other panel sizes may also be available....
A grating is any regularly spaced collection of essentially identical, parallel, elongated elements. Gratings usually consist of a single set of elongated elements, but can consist of two sets, in....
Lead is used in building construction, lead-acid batteries, bullets and shot, weights, as part of solders, pewters, fusible alloys, and as a radiation shield. " CV. AGRO INDUSTRI SURABAYA " Telp.....
Lead is a chemical element in the carbon group with symbol Pb ( from Latin: plumbum) and atomic number 82. Lead is a soft, malleable and heavy post-transition metal. Metallic lead has a bluish-white....