1, Column Specifications: 114 × 3mm 2, carrying tube specifications:. 25mm round; 3, using the inner button at the top of the column plastic caps, avoid Drizzle rain; 4, rotating parts should adopt national standards and should adopt effective bearing Waterproof and dustproof measures; fasteners made of stainless steel, rust-proof locking with anti-theft features, removable side need special tools; 5, the surface treatment process: degreasing - pickling - phosphate - electrostatic spraying \ skimmed - throw Pill - electrostatic spraying. 6, finishing layer on the equipment used in all outdoor durable powder.