hex head wood screw sizes

Tek screws, named after their inventor Tek Screw Corporation, are designed with a unique thread pattern that allows them to tap their own hole in metal, wood, or composite materials. Their primary advantage lies in their ability to provide a secure hold without pre-drilling, saving time and effort on job sites. The 20-inch variant is particularly valuable due to its length, which enables it to penetrate deeper and handle heavier loads compared to shorter screws.

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  • What is titanium dioxide?

  • Titanium Dioxide (TiO2), specifically in its anatase form, is widely recognized for its high refractive index and excellent pigment properties. When used in paints, it not only provides brightness and opacity but also ensures excellent durability and resistance to discoloration. These attributes are paramount in creating paints that maintain their vibrancy over time, even under harsh environmental conditions.
  • Another critical aspect is logistics; given the vast geographical expanse of China, suppliers with efficient distribution networks can ensure timely delivery, reducing potential delays in construction scheduleschina interior wall coating lithopone suppliers. Customer service is also key - responsive suppliers who offer technical support and guidance contribute significantly to a smooth procurement process.
  • In addition to hiding power, titanium dioxide also plays a vital role in enhancing the durability of paints. It acts as a barrier, protecting the walls from external elements such as UV radiation, moisture and pollutants. Titanium dioxide's high refractive index allows it to reflect harmful UV rays, preventing them from fading paint and retaining its vibrant colors for a long time. This UV resistance is especially important for facades that are exposed to sunlight throughout the day.

  • Suppliers of Barium Sulphate


  • Titanium dioxide suppliers play a pivotal role in the supply chain, ensuring a consistent and reliable source of this essential material. They source TiO2 from mines rich in titanium-bearing minerals, primarily ilmenite and rutile, and then process it through various refining techniques, including the sulfate and chloride processes. The end product is a high-purity white pigment that finds applications across numerous sectors.
  • In the sulfate process, the titanium-rich ore is reacted with sulfuric acid, giving TiOSO4. Pure TiO2 is obtained from TiOSO4 in several steps, going via TiO(OH)2. Depending on the chemistry and route chosen, either rutile or anatase titanium dioxide is made.