Factory [153*7341*4170] Tianjin Railway Line Guardrail Quotation (Fast Shipping) High-Speed Rail Concrete Guardrail Prefabrication Manufacturer

High-Speed Railway Bridge Underpass Protection Fence Application Range: This product is suitable for railway closures on dry bridges with pier heights of 3 meters or more under high-speed railway bridges.

Barbed wire roll cages, metal mesh protection fences, reinforced security fences, and protection fences under railway bridges collectively form the main materials for the protection along the high-speed railway.

High-Speed Railway Bridge Undercrossing Protection Fence; Technical Standards:

General Reference Drawing for Railway Construction Engineering (Underpass Protection Fence, Main Line (2012) 8002).

2; Technical requirements for protective railing under high-speed railway bridges:

3; Reinforced concrete pillar metal mesh fence consists of pillars, mesh panels, and connecting parts, with a protective height of 1.8 meters.

4; Columns are prefabricated with C30 reinforced concrete, featuring a cross-sectional size of 120mm*120mm and a height of 2.5m. Four 12mm diameter holes are pre-drilled during the prefabrication process, which are then secured to the side connection plates during installation with bolts.

5; Metal mesh panels use Q235 rectangular tube frames, size 30mm x 50mm, tube thickness 2.0mm; the internal wire mesh is made of HPB300 φ4.0mm high-strength cold-drawn steel wire, size 75mm x 150mm.

6; Connector plates and bolts. The column connection plates and mesh connection plates are made of 90° bent Q235 steel plates with a thickness of 4.0mm, available in two types, A and B, depending on the installation position. Both the connector plates and bolts are made of Q235 steel and are galvanized, with a zinc coating of 270g/m².

Precision requirements for the connector plate: Length tolerance ≤ 1.0mm, width tolerance ≤ 0.5mm, thickness tolerance ≤ 0.5mm, hole position deviation ≤ 1.0mm.

Barbed wire roll cages, metal mesh protective fences, reinforced security fences, and protective barriers under railway bridges collectively form the main materials for the protection along high-speed railway lines.

The railway guardrails are made of high-quality low-carbon steel wire焊接, mainly divided into two types: galvanized guardrails and coated guardrails. They are constructed by connecting posts with mesh panels.