How to choose a glass
1, whiteness: The requirements of the glass material is not significant color.
2, Bubble: Allow a certain width, a certain length of the bubble there is a certain number, and can be pierced by steel needle bubble is not allowed to exist.
3, transparent pimple: Refers to the melting of uneven vitreous, to the capacity of less than 142L of glass, not more than 1.0mm in length not more than one; for the capacity of 142~284ml glass, the length is not more than 1.5mm, the cup body 1/3 of the transparency of the knot is not allowed to exist.
4, Miscellaneous grains: Refers to the opaque granular debris, the length is not more than 0.5mm, not more than 1.
5, cup-mouth roundness: refers to the cup mouth is not round, its maximum diameter and the minimum diameter difference is not greater than the 0.7~1.0mm.6, stripes: Distance from 300mm visual obviously not allowed.
7, cup height low deviation (cup height low deflection): A cup body top and the lowest height difference is not more than 1.0~1.5mm.
8, the cup mouth thickness difference: not greater than 0.5~0.8mm.
9, Shear printing: Refers to stripes or centipede-like shear marks, not more than the length of 20~25mm, not more than 2.0mm width of not more than 1, more than the bottom of the cup, or white shiny, more than 3mm is not allowed.
10, Die Printing: cup body is a record of the imprint of the seal, the head-up apparent not allowed.
11, cup body suction flat: Refers to the cup body uneven, head-up apparent not allowed.
12, rub hair and scratches: rub hair refers to the glass and glass cup diameter friction, the cup left a loss of luster traces, flat see obviously not allowed. Scratches refer to collisions between glasses, scars left on the surface of the cup, not allowed to shine.
Previous: Glass Maintenance
Next: No Information