1,Stair handrail,A protective railing,Stainless steel Guardrail. 2,Diameter: From 10.0-159.0mm. ... 1.0-5.0mm. 1, Name: Stair handrail,A protective railing,Stainless steel Guardrail.2, Material: Stainless steel composite pipes, [Inner ... Applications, Hospital Equipment, Bathroom Accessories, Lighting Pole, Highway handrail, Stair Fence...etc.