a.Stair Railings / Handrails. b.Stainless steel composite pipe. c.This appliance is good for stair handrails,balcony railings. Stair Railings / Handrails.This appliance is good for bridge railings, deck railings, porch handrails, stair railings, balcony guardrail, bounding wall guardrail, highroad guardrail and etc.a. Outside Diameter φ10mm~φ219mm, Tolerance ±0.1~0.35mm.b. Wall-Thickness 1.0~10. ...