Steel platform, steel staircase and steel ramp are all standardized.

Safety Technical Conditions for Fixed Industrial Protection Bars GB 4053.3-93 The State Technical Supervision Bureau approved from December 1993 to December 27 1994-07-01 Implementation 1 Subject Content and Application Scope This Standard stipulates the main technical requirements for the design, manufacture and installation of Fixed Industrial Protection Bars.

This standard is applicable to platforms, pedestrian passages, elevators and other places where there is a risk of falling in industrial enterprises. This standard is not applicable to all kinds of traffic and other mobile devices. 2 Refer to standard GBJ 205 steel structure engineering construction and acceptance code 3.1 fixed industrial protective railings; protective facilities fixed along open edges of platforms, corridors and workplaces (see figure). 3.2 Columns: Vertical members of railings.

 3.3 Handrails: Protective members fixed horizontally at the upper end of the column. 3.4 transverse rod: connecting rod fixed in the middle of the column. 3.5 baffle; protective plate fixed to the lower part of the column. 4. Strength requires that the design of railings must ensure that the handrails can withstand loads not less than 500 N/m applied vertically in the horizontal direction.