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The glass tube can be directly used for sucking various drinks.

Heat resistance, glass is a poor conductor and brittle materials division. But 3.3 borosilicate glass is different, because of the chemical composition of 12.7% of B2O3, its thermal stability is great. According to IS03587, for borosilicate glass products with diameter of 100mm, the thermal shock temperature shall not exceed 120 ° C; for borosilicate glass products with diameter of 100mm, the thermal shock temperature shall not exceed 11O ° C. When the glass equipment heating to more than 100 degrees C, to be protected to avoid cold water splashing on the glass equipment, so as to avoid cracking. Heat transfer performance at constant pressure (20 ° C-100 ° C) , average heat conduction: (20.100 ° C) λ = 1.2 WM-1K-1 average specific heat: CP = 0.98 jg-1k-1 glass tube heat exchanger k = 222.24 vt0.5038(shell side of water-water system) K = 505.36 VB0.2928(shell side of water-water system) K = 370.75 VB0.07131(shell side of steam-water system) glass-coil heat exchanger K: 334.1VC0.1175(shell side of water-water system) K: 264.9VB0.1365(shell side of water-water system) K = 366.76 VC0.1213(steam-water system)