... 30days 4.Availability:20,000tons/year Ball Joint HandrailsBall-joint rail have advantages such as attractive appearance,convenient installation,robustness, ... in the bracket.2.Rail height:single rail manufactured according to design,double rail is 1,100mm,and triple rail is 1,200 ... sectional view and joint drawing. 3. In the case of stair treads, please specify its type, length, width, quantity and ...