Stainless Steel Through-Wall Bolt

Stainless Steel Through-Wall Bolt is a special fastener used to fix the formwork and prevent mold expansion during concrete pouring,the core material is stainless steel,with both structural support and corrosion resistance,widely used in basements,pools,tunnels and other damp or anti-corrosion needs projects,is the key component to ensure the forming quality and long-term waterproof performance of concrete structures.Its material is mostly 304 or 316 stainless steel:304 stainless steel is resistant to general humid environments,moderate cost,suitable for ordinary underground projects;316 stainless steel contains molybdenum elements,which has stronger resistance to salt spray and chemical corrosion,and is suitable for harsh scenarios such as coastal and chemical pools.Compared with ordinary carbon steel wall screws,stainless steel completely solves the structural hazards caused by rust,and the service life can reach more than 20 years,reducing later maintenance costs.Structurally,stainless steel Through-Wall Bolts are usually composed of screw body,waterstop,mountain card,and nut.The annular waterstop welded in the middle is the core waterproof design,which can block the penetration of groundwater along the screw gap,and with the mountain card and nuts on both sides of the formwork,the spacing of the formwork can be accurately adjusted to ensure that the thickness of the concrete pouring is uniform.Some products will also be surface polished to further improve stain and corrosion resistance.During installation,it should be noted that the length of the screw should be cut according to the thickness of the concrete in advance to ensure that the waterstop is centered;When installing the formwork,tighten the nut symmetrically to avoid deformation caused by uneven force;After concrete curing,you can choose to keep the screw(anti-corrosion scene)or cut the exposed part and seal it according to your needs.Its core advantages are:no need for later rust removal and maintenance,reducing the total cost of the project;waterproof and water-proof design meets the needs of humid environment;Stainless steel has high strength(tensile strength≥500MPa)and can withstand the pressure of the concrete side without deformation.As a special connector in special scenarios,stainless steel wall penetrating screws provide a reliable guarantee for the structural safety and durability of high-demand concrete projects.