... . 3. Delivery:7-30days 4.Availability:20,000tons/year Wanjie ball-joint handrails are well featured by attractive appearance, easy installation, sturdy ... is 1,200 mm.3.Column spacing:mainly four kinds as 1000,1200,1500,2000mm.4.Steel tube's size:subject to ... the design drawings confirmed by both parties. steel ball-joint handrail & stanchions with base ...