News
The new national standard for building curtain wall fasteners has been officially implemented. The new standard adds 12 mandatory testing indicators, raising the product salt spray corrosion test duration to 2,000 hours and the fatigue life test from 500,000 cycles to 1.2 million cycles, imposing stricter performance requirements on curtain wall embedded plates, dry hangers, back bolts, mechanical anchors and connecting bolts.
The new standard explicitly stipulates that high-performance anchoring fasteners should be prioritized for super high-rise buildings, transportation hubs and government-invested public construction projects. In coastal high-corrosion environments, the usage rate of 304 and 316 stainless steel curtain wall accessories further increases.
For manufacturing enterprises, raw material control, heat treatment processes and surface anti-corrosion treatment have become key points of quality control. Many fastener factories have updated testing equipment and improved factory inspection reports to meet the documentation submission requirements of project owners. Industry insiders remind that engineering procurement should not only focus on price; mechanical properties and salt spray test reports must be verified to avoid potential curtain wall safety hazards in later stages.
