steel bar protection card, commonly known as reinforced protective layer pad on the construction site.

according to the usage of structural members: vertical members (such as shear walls, frame columns, etc., including beams) are circular, and horizontal members (such as plates) are frustum-shaped.

according to the materials: plastic and cement, of course, most construction sites use marble as the protective cushion of floor reinforcement.

purpose: it is used to ensure the protective layer thickness of steel bars in concrete, prevent steel bars from rusting and ensure the durability of concrete structural members.

the reinforced plastic pad is shown below.