What is the difference between high and low glass cup price
10, stamps: cup body of a record grain printing, while obvious are not allowed to have. 11, in a flat: refers to the cup body is uneven, while obvious are not allowed to have. 12, brush hair brush with bruises: refers to the glass and the glass of the diameter of the friction, MAO left in the cup body loses luster, flat to see clearly are not allowed to have. Scratch refers to collide with each other, between the glass in the cup body surface left scars, there is no light.
7, low cup height deviation (cup height low deflection) : a glass bowl the top and the lowest height difference is not greater than 1.0 ~ 1.0 mm. 8, the glass thickness difference: no more than 0.5 ~ 0.8 mm. 9, shear seal: refers to the stripe or the centipede cutting marks, length is not more than 20 ~ 25 mm, width is not more than 2.0 mm of not more than 1, more than the bottom, or hair hair bright, there is no more than 3 mm.
4, miscellaneous grains: refers to the opaque granular sundry, length is not greater than 0.5 mm, not more than 1. 5, close roundness refers to is not round at the top, the diameter difference between maximum and minimum diameter is not more than 0.7 ~ 1.0 mm. 6, stripes: visual obvious are not allowed to have a distance of 300 mm.
2, bubble: allows a certain width and lengths of bubbles exist a certain amount, and can use the steel needle prick bubbles are not allowed to exist. 3, transparent bumps: refers to the vitreous body of molten uneven, glass of capacity of less than 142 l, length is not greater than 1.0 mm is not more than one; The capacity of 142 ~ 284 ml glass, length is not greater than 1.5 mm is not more than one, the transparency of 1/3 cup body bumps are not allowed to exist.
Tell you how to choose the glass, you will understand the glass cup where is the difference between the high and low price. 1, whiteness: no significant color of bright glass requirement. 2, bubble: allows a certain width and lengths of bubbles exist a certain amount, and can use the steel needle prick bubbles are not allowed to exist.
