Core contents of the standard: First, classification and model, clarifying the classification method and model coding rules of elevator guide rails, which are divided into car guide rails and counterweight guide rails according to purpose, and into T-shaped guide rails, L-shaped guide rails and hollow guide rails according to cross-sectional shape; Second, comprehensive technical requirements, stipulating the technical requirements of elevator guide rails such as material, size, tolerance, straightness, twist, surface quality, and mechanical properties; Third, unified test methods, unifying the test methods and test equipment requirements for various technical requirements of elevator guide rails, and stipulating the test conditions and data processing methods; Fourth, standardized inspection rules, clarifying the items, methods and judgment rules of factory inspection, type inspection and sampling inspection of elevator guide rails; Fifth, installation and maintenance requirements, stipulating the installation, commissioning, acceptance requirements and daily maintenance requirements of elevator guide rails to ensure the installation accuracy and operating performance of guide rails.