Touch: Rub your hand over the brick surface. If it feels heavy and solid, it indicates high density and hardness, which are signs of quality. A light or soft feel may suggest lower quality and less durability.

Scratch Test: Use a hard object to gently scrape the glaze. If scratches appear easily, the glaze is weak and not durable. This can lead to staining after polishing, making cleaning more difficult over time.

Tap Test: Gently tap the surface of the antique brick with your hand. A clear, ringing sound means the brick is well-fired and of good quality. A dull or strange sound could indicate poor firing, internal cracks, or structural weakness.

Visual Inspection: Examine the cross-section of the brick — it should be dense and uniform. Check the surface for natural reflections and consistent color. The more varied and harmonious the colors, the better they will blend in large areas, creating a visually pleasing and cohesive look that complements your home's overall style.

Water Absorption Test: Place a few drops of water on the back of the tile. If the water beads up and doesn’t spread, the tile has low water absorption and is of high quality. Jinyitao antique bricks have a water absorption rate of less than 0.5%, meaning they are compact and highly durable.

Stain Resistance Test: Use a colored pencil to draw on the front of the tile. After a few minutes, wipe it off with a damp cloth. If no marks remain and the surface looks as clean as new, it shows excellent stain resistance and easy maintenance.

Butt Welding Tees

ZHITONG PIPE VALVE TECHNOLOGY CO.,LTD , https://www.ztongvalve.com