ball joint handrail *full range in type&dimension *largest production capability ... deck, platform, walkway and roof and edge 1) Ball-joint rail have advantages such as attractive appearance, convenient installation, robustness ... manufactured according to design, double rail is 1,100mm, and triple rail is 1,200 mm. 4) Column spacing: mainly ... .5(38.1)26.8(32.0) steel ball joint handrail with base plate