small drywall screws

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  • In the corner area, the zinc layer is often thicker than other places, and has good toughness and abrasion resistance. And other coatings in this corner, often Z thin Z is not easy to construction, Z is easy to hurt, so often need to be maintained. Even if there’s a lot of mechanical damage or something. Causing a small layer of zinc to peel off, leaving the iron base exposed, the surrounding zinc layer will act as a sacrificial anode to protect the steel from erosion.

  • 3, barbed rope protection net in the bridge, channel, should be toward the bridge head cone slope (or end wall) direction surrounded, should not leave for people, livestock can drill into the gap.

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