Three-claw Expansion Bolt with Yellow Zinc

Common Challenge: Under long-term vibration conditions, standard expansion anchors tend to experience micro-displacement of the claws, gradually loosening over time and potentially leading to equipment shifting or structural instability, creating safety risks.
Our Solution: Three-claw uniform expansion structure combined with precision cold heading process, with claw-to-cone tolerance controlled within ±0.1mm. The three claws expand simultaneously for balanced load distribution, ensuring lasting clamping force even under high-frequency vibration environments.

Common Challenge: Salt spray and high-humidity environments are the primary threats to anchor longevity. Conventional zinc-plated products often show signs of corrosion within three to five years under harsh conditions, and severe rusting can lead to complete failure, driving up long-term maintenance costs.
Our Solution: Yellow zinc passivation (Cr3+) with high-standard film thickness, achieving salt spray test stability of over 72 hours. For projects requiring higher corrosion resistance, we also offer hot-dip galvanizing or Dacromet coating to match different environmental requirements.

Common Challenge: On job sites, common issues such as claw jamming, failure to expand properly, or incomplete expansion often require removal and reinstallation, affecting project schedules and increasing labor costs.
Our Solution: Precision stamping and heat treatment for consistent claw elasticity; progressive taper design for smooth expansion during tightening. Each batch undergoes installation simulation testing to ensure a "one-tighten, one-set" experience in actual field applications.

Common Challenge: In multi-batch procurement, inconsistent performance across batches creates quality variability, increasing inspection burdens and acceptance risks, which can impact project timelines.
Our Solution: ISO 9001:2015 full-process quality management system with key process control points from raw material intake to finished product dispatch. Each batch undergoes mandatory testing for hardness, tensile strength, salt spray resistance, and dimensional accuracy, with complete quality traceability records maintained to ensure consistent quality across multiple batches.