Yidao Metal New Products: 22mm Left Hand Rock Bolt | Grade 420 & Grade 520 High Tensile Rock BoltWe newly added high-quality 22mm Left Hand Thread Rock Bolts in Grade 420 and Grade 520, specially engineered for underground mining, tunnel stabilization and slope support projects.Different from st...
Yidao – Precision Engineering Through Rigorous Equipment CalibrationAt Yidao, precision is not optional—it is foundational. As a manufacturer of high-strength hot-rolled thread bars and complete anchoring systems, we recognize that product reliability begins with measurement integrity. That is why...
Underground Mining Roof BoltsWhat Are Mining Roof Bolts?Mining roof bolts are common anchoring components used to support roofs in underground mines. They are mainly installed in the roof rock of roadways, stopes, and other underground openings. Their role is not the same as a normal fastener. Inste...
22mm Left-Hand Helical Bar for Mining, Tunnelling & Ground SupportThe 22mm Left-Hand Helical Bar is a high-performance threaded steel bar designed for demanding ground support applications, including rock bolting, mining, tunnelling, soil nailing and slope stabilization.Manufactured with a conti...
Epoxy coating VS Hot-dip galvanizing, which one should you choose for your anchor project?When selecting anti-corrosion solutions for rock bolts, anchor bars and ground anchorage systems, most project engineers face a classic choice: Hot-dip galvanizing or Epoxy coating?Each surface treatment has it...
Yidao – Certified Excellence in Quality, Safety, and SustainabilityAt Yidao, we believe that world-class products are built on a foundation of responsible management. Beyond manufacturing high-strength thread bars and anchoring systems, we are deeply committed to quality excellence, workplace safet...
57mm Thread Bar for Ground Anchor ApplicationsHigh-Strength Thread Bar for Reliable Ground AnchoringThe 57mm Thread Bar is a high-strength steel bar designed for demanding ground anchor and geotechnical anchoring applications. With a continuous coarse thread along the bar, it provides reliable load...
Loop Anchor for formworkThe loop anchor is an additional element designed for single-sided formwork, such as foundation or wall formwork. The product is made of 15/17mm tie rod and can be bent, which increases its versatility in use. The shape of the loop extends the anchorage length and prevents it...
Why Screws Won't Stay Flush: The Hidden CausesA screw that won't sit flat against the surface is a common headache. Here's what our engineering analysis reveals.Bearing surface interference tops the list. Paint, burrs, weld spatter, or debris trapped under the screw head prevent full con...
How to stock Thread Bars/Rock Bolt at construction site.Many site teams underestimate steel storage. Even though thread bars are coated with anti‑rust oil, groundwater, dew and muddy moisture can still attack the steel surface quickly.Rust may first appear at thread roots, which is the most stresse...
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