Frame guardrail network, highway and railway isolation fence, double-sided wire impregnated plastic protective net

Description :

  Frame fence is a structured protective facility that is welded with high-quality low-carbon steel wire and undergoes surface anti-corrosion treatment. It mainly solves the problems of closed isolation and safety protection in areas such as highways, railways, bridges, airports, ports, etc., effectively preventing human and animal intrusion or illegal crossing, and ensuring the safe operation of transportation arteries and important facilities. Typical working conditions include isolation on both sides of highways, closure along railways, separation of municipal road green belts, and boundary protection of industrial parks. This category is known for its stable structure, wide field of view, and convenient installation. It is an indispensable basic security material in modern infrastructure construction and is suitable for long-term outdoor use in various complex terrain conditions.

  The core specifications of frame guardrail mesh usually involve mesh size, wire diameter thickness, frame profile specifications, and overall external dimensions. The common mesh sizes are 50mm × 100mm, 50mm × 200mm, or 75mm × 150mm, with wire diameters ranging from 3.5mm to 5.0mm, depending on the protection level requirements. The frame is mostly made of 20mm × 30mm, 30mm × 30mm, or 40mm × 40mm square or rectangular pipes welded together, with a thickness generally ranging from 1.0mm to 2.0mm. The surface treatment process mainly includes hot-dip galvanizing, galvanizing, spraying or dipping, with the dipping layer thickness usually ranging from 0.5mm to 1.0mm, and the color is mostly grass green, dark green or white, in accordance with national standards such as GB/T 5237, with good weather resistance, UV resistance and corrosion resistance, ensuring a long service life even in harsh environments.

  When selecting, the strength grade and anti-corrosion requirements of the guardrail should be determined based on the actual application scenario. It is recommended to use heavy-duty frame guardrails with thicker wire diameter and thicker frames for highways and railway main lines, and to adopt a dual anti-corrosion process of hot-dip galvanizing and dipping plastic to adapt to long-term wind and sun exposure and possible impact loads. Municipal gardens or community isolation can choose lightweight specifications, focusing on aesthetics and transparency. If the environmental humidity is high or close to coastal areas, priority should be given to high zinc hot-dip galvanizing or high-quality plastic powder dipping products to avoid rapid corrosion of ordinary electroplated galvanized products. Compared with double-sided wire fence, frame fence has stronger overall rigidity and is less prone to deformation due to its frame support, but the cost is slightly higher; Compared with steel mesh, it has better ventilation and transparency, lower wind resistance, and is more suitable for use in open areas.

  When installing the frame fence, it is usually fixed with embedded parts or connected with flange bolts. Pre embedded type requires pouring concrete foundation in advance, burying the columns underground and reinforcing them, which has the best stability but a longer construction period; The flange type is directly fixed to the hardened ground through expansion bolts, which is quick to install and easy to maintain or relocate later. In daily maintenance, it is necessary to regularly check whether the connecting bolts are loose, whether the welding points are cracked, and whether the surface coating is peeling or corroded. Local damage should be repaired in a timely manner to prevent corrosion from spreading and affecting the overall structural strength. In winter snow covered areas, attention should be paid to removing heavy snow from the mesh surface to avoid deformation caused by overloading. Proper installation and regular maintenance can significantly extend the service life of frame guardrails, ensuring their continuous protective function.

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