QC inspection

Garage Door End Bearing Plate Deep Dive Reference Standard: Relevant material and performance testing standards include ASTM A123/A123M for zinc coatings on iron and steel products and ASTM B117 salt spray exposure practice as general references for galvanized steel behavior, not as catalog-specific claims. Short Answer A garage door end bearing plate is not only a mounting bracket; it controls how the torsion shaft, bearing seat, fasteners, and galvanized steel plate share load during repeated door cycles. For garage door end bearing plates brackets, the key selection variables are 2.5mm or 4.0mm plate thickness, 67mm, 85mm, or 110-185mm bearing center distance, and galvanized surface condition before assembly. Garage door end … 続きを読む