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采购内容Buy Latte Glass For Cafe Use **** Hidden Message *****We require a reliable long-term supplier of 9 fl oz and 15 fl oz latte style glasses, suitable for use in a very busy commercial cafe environment.Must be able to withstand 130 degree liquid (milk or water), extensive dishwasher cycling (at least 500 cycles) and be toughened to withstand general wear and tear of cafe usage.The glasses have a moulded company logo on the external surface.Some more detailed specifications:Glass condition : Annealed or toughened Chemical composition of raw material used at presentSiO2 72.5 % Sable Na2O 13,5 % Soda CaO 11 % Calcium carbonate Al2O3 1,5 % Alumina MgO 1,5 % Dolomite PHYSICO-CHEMICAL PROPERTIES Transformation temperature 550 Softening temperature 600 Density 2.5 Micro-hardness (Vickers) 490 Refractive index 1.52 Heat conductivity20? 1.05 Wm-1 K-1 0.90 Kcal m-1 h-1 ?C-1 130? 1.15 Wm-1 K-1 0.99 Kcal m-1 h-1 ?C-1 specific heat 0.24 cal/?/g CHEMICAL RESISTANCE:Resistance to diswashing Over 500 washing cycles Hydrolitic resistance Classe 3 - test DIN 12111 Alkaline resistance Classe 1 - test DIN 12122 Resistance to acid Class 1 - test DIN 12116 Thermal resistance . annealed Delta T = 60? +/- 20? . toughened Delta T = 135? +/- 10? . Specific thermal treatment Delta T = 100 -0?/+ 40? (hublot) Country:United Kingdom系联系方式Co:Drew DewsallAdd:91 Brunswick Crescent, New Southgate, London, New Southgate, United KingdomTel:44-208-362 0461Fax:44-208-3687584Email:norman@mdx.ac.uk LinkMan:Mr. Drew Dewsall
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