... install, sturdy, durable, and maintenance-free, extensively suitable for mines, electric power, petrochemical industry, machinery, light industry, ... shipbuilding, railway, road, bridge, quay, school, water works, sewage treatment plant, garden path, platform, stairs and separating ... Specification Table below. VII. Materials: C = carbon steel; S=stainless steelVIII. Oter Ball-connected Handrail Railing ...