... ,petrifaction enterprise.2.Specification: NO. Post dia ball dia handrail dia rai dia tread plate HL1- ... platform fence post (2)higher H=1100(ball middle),used in middle and high contruction platform ... fence post (3)three H=1200(ball middle),used in higher contruction platform fence post4 ... end--pipe base--tread stair plate5.Advantage: this ball fence post is hot dipped galvanized,anti-rust ...