Ball-joint handrail: 1.Factory for the post 2.Customized, with or no base 3.ISO9001:2000 4.Durable,aesthetic outlook,ISO Galvanized Ball-joint handrail:1.Usage: used in water factory,dirty water treatment factory,electric power plant, chemical plant,petrifaction enterprise.2.Specification: NO. Post dia ball dia handrail dia rai dia tread plate HL1-001 1 1/4" Φ65 1" 3/4" with HL1-002 without HL2- ...