Commercial Hardware

상업용 차고문 경첩은 왜 처지고 레일에 걸리는 걸까요?

작성자:

Why Do Commercial Garage Door Hinges Sag and Jam Tracks? Reference Standard: ANSI/DASMA 102 (Specifications for Sectional Doors) and ASTM E8/E8M (Standard Test Methods for Tension Testing of Metallic Materials). Short Answer Standard-gauge commercial door hinges fail because the immense downward gravity of heavy sectional doors causes radial yielding in the hinge barrels, gradually stretching … 더 보기