Dywidag threads: why should you know them?

Dywi – what? It might not be the most catchy name, but you’ve probably come across a Dywidag thread without even realizing it. Whether you're a construction expert or just someone who walks on concrete structures every day, there's a good chance that Dywidag threads have played a role in keeping those structures safe and strong. So, what exactly is a Dywidag thread? It’s a type of threaded rod used extensively in construction, especially in large-scale projects like bridges, stadiums, and commercial buildings. These threads are designed to provide secure anchoring and support, making them an essential part of reinforced concrete systems around the world. The story behind Dywidag starts in the 19th century with the company Dyckerhoff & Widmann AG, which later shortened its name to Dywidag. Originally a cement factory, the company expanded into bridge construction and eventually developed the unique threaded rods that now bear its name. Today, Dywidag is known globally for its high-quality, standardized threaded rods that are used in everything from tunnels to mining operations. What makes the Dywidag thread special is its design. Unlike standard threads, Dywidag threads feature rolled ribs that are not continuous but spaced out. This gives the thread greater strength and resistance to wear and contamination—important qualities when dealing with harsh environments like construction sites or underground mines. The Dywidag thread, also called the DW thread, has a 90° flank angle and comes in various sizes such as DW 15, DW 20, and DW 26.5. Each size has specific dimensions and pitches, so it's important to choose the right one for your project. The larger pitch also makes assembly and disassembly faster, which is a huge advantage on busy construction sites. While Dywidag threads are mostly used in large-scale construction, they can still be useful for smaller projects too. If you're a professional or hobbyist working on structural elements, you might find yourself using these specialized rods at some point. At BAER, we understand the importance of both big and small threads. Whether you need tools for a major construction project or something more modest, our online shop has everything you need. Don’t hesitate to reach out to our customer service if you have any questions—we’re always here to help.

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