... steel tube ball joint stanchions novel, beautiful, convenient to install, sturdy, metal steel railing Ball-connection handrailRijin handrail adopts ball-connection and surface ... : C = carbon steel; S=stainless steelVIII. Oter Ball-connected Handrail Railing Specification Table SizeOut Diameter of BallOut diameter ... , C, W, S, SC, SO, MB (Multi ball).2. Types of Inclined Railing include PA, CA, WA, ...