铁艺护栏不只是装饰，它是防护构件。尺寸差几厘米，安全就差一个等级。

Iron railings are not just decorations, they are protective components. If the size difference is a few centimeters, the safety level is one level lower.

高度和间距有规范

There are regulations for height and spacing

根据团体标准，道路隔离金属护栏的立柱壁厚有明确要求：不锈钢管立柱不小于2.0mm，镀锌钢管立柱不小于3.0mm。这不是建议，是强制指标。钢管太薄，外力冲击容易弯曲变形，失去防护作用。

According to the group standard, there are clear requirements for the wall thickness of the columns of road isolation metal guardrails: stainless steel pipe columns should not be less than 2.0mm, and galvanized steel pipe columns should not be less than 3.0mm. This is not a recommendation, but a mandatory indicator. The steel pipe is too thin, and it is easy to bend and deform under external impact, losing its protective function.

护栏的杆件间距同样需要控制。竖杆间距过大，小孩头部可能穿过；间距过小，视觉压抑还增加成本。公共区域护栏的竖杆净间距通常控制在11cm以内，具体根据使用场景确定。

The spacing between the members of the guardrail also needs to be controlled. The distance between vertical poles is too large, and children's heads may pass through; The spacing is too small, causing visual suppression and increasing costs. The clear distance between vertical poles of guardrails in public areas is usually controlled within 11cm, depending on the specific usage scenario.

防锈等级看环境

Rust prevention level depends on the environment

护栏用在哪里，防锈要求完全不同。普通室外环境，镀锌加喷塑基本够用。但潮湿环境或沿海地区，标准要求更严格：湿度大于70%或沿海区域的室外护栏，应采用两道表面处理层或更高的防腐技术。海风中的氯离子腐蚀性极强，普通涂层一两年就失效。

Where to use guardrails, the rust prevention requirements are completely different. In ordinary outdoor environments, galvanizing and spraying are basically sufficient. But in humid environments or coastal areas, the standard requirements are stricter: outdoor guardrails with humidity greater than 70% or coastal areas should use two surface treatment layers or higher anti-corrosion technology. The chloride ions in sea breeze are highly corrosive, and ordinary coatings fail within one or two years.

热浸镀锌是目前公认最有效的防锈方式，防锈期可达20到50年。锌层厚度是关键指标，行业标准对防腐铁艺护栏要求镀锌层达到规定厚度，才能保证长期户外使用。

Hot dip galvanizing is currently recognized as the most effective rust prevention method, with a rust prevention period of up to 20 to 50 years. The thickness of the zinc layer is a key indicator, and industry standards require that the galvanized layer of anti-corrosion wrought iron guardrails reach the specified thickness in order to ensure long-term outdoor use.

不同材质各有所长

Different materials have their own strengths

铁艺护栏以钢材为主，强度高、可塑性强，能做出复杂花型。锌钢护栏成本适中，表面处理稳定，适合大批量工程。铝艺护栏重量轻、天然不生锈，但强度不如钢材，适合对承重要求不高的场所。2024年实施的团体标准已将护栏按材质明确分为铁艺、锌钢、铝艺三类，各自适用场景不同。

Iron railings are mainly made of steel, with high strength and strong plasticity, and can be made into complex patterns. Zinc steel guardrails have a moderate cost and stable surface treatment, making them suitable for large-scale engineering projects. Aluminum guardrails are lightweight and naturally rust free, but their strength is not as strong as steel, making them suitable for places with low load-bearing requirements. The group standard implemented in 2024 has clearly classified guardrails into three categories based on their materials: wrought iron, zinc steel, and aluminum, each with different applicable scenarios.

安装基础别省钱

Don't save money on installation basics

护栏立柱需要牢固固定。预埋式安装，立柱埋入深度根据高度和受力要求确定；膨胀螺栓固定式，需要确认墙体材质和承重能力。地脚螺栓位置不准确、现场随意打孔，都是常见的安装隐患。

The guardrail pillars need to be firmly fixed. Pre embedded installation, the depth of column embedding is determined according to the height and stress requirements; Expansion bolt fixed type requires confirmation of wall material and load-bearing capacity. Inaccurate positioning of anchor bolts and random drilling on site are common installation hazards.

表面处理决定颜值寿命

Surface treatment determines appearance and lifespan

护栏表面处理工艺比大多数人想的复杂。正规流程包括：去锈、除油、酸洗、热浸镀锌、抛光、喷漆、烤漆、罩透明漆。每一步不到位，后期就可能起泡、开裂、剥落。选购时要求提供工艺说明和检测报告，比听销售口头承诺可靠。

The surface treatment process of guardrails is more complex than most people think. The formal process includes: rust removal, oil removal, acid washing, hot-dip galvanizing, polishing, painting, baking paint, and transparent coating. If each step is not taken properly, there may be bubbles, cracks, and peeling in the later stage. When making a purchase, it is required to provide process instructions and testing reports, which is more reliable than listening to verbal promises from sales.

铁艺护栏的选购逻辑很简单：先看用在哪儿，再定防锈等级，最后核对壁厚和间距。安全指标达标，美观才有意义。

The selection logic for wrought iron guardrails is simple: first look at where they are used, then determine the rust prevention level, and finally check the wall thickness and spacing. Only when the safety indicators meet the standards and the appearance is meaningful.