When purchasing embedded parts, an objective evaluation based on technical principles is essential; avoid decisions based solely on price or appearance. Here is a professional selection guide to help you identify qualified products:
Check Material and Corrosion Protection: Prioritize metal materials (such as carbon steel) and ensure the hot-dip galvanized anti-corrosion layer thickness is uniform (this can be checked visually or with a thickness gauge). Inferior products may use spray coating instead, resulting in poor corrosion protection. In actual testing, samples can be taken for salt spray testing to observe rust formation.
Verify Mechanical Properties: Obtain product test reports to confirm tensile strength data (e.g., ≥XXXMPa). The report should be from an independent laboratory and comply with GB or ISO standards. Avoid products without specific values; insufficient strength may lead to premature failure.
Assess Accuracy and Compatibility: Pay attention to construction error indicators (e.g., ≤2mm), which can be verified through sample measurement. Choose products with high design compatibility, such as reducers that can adapt to different rebar diameters, reducing on-site adjustments. Also consider whether the product supports both positive and negative thread structures to simplify installation.
Certification and Brand Reputation Review: Ensure products are certified to GB/ISO standards and certificates are verifiable. Choose brands with stable production locations, such as those in industrial zones like Wuhan, Hubei, which often have mature supply chains. Refer to user case studies or engineering application records to evaluate long-term performance.
Overall Cost and Safety: Balance price and quality, avoiding low-price traps. While high-quality embedded parts have higher initial costs, they reduce maintenance risks and lifecycle costs. It is recommended to conduct small-batch trials before procurement to test performance in real-world environments.