选铁艺大门，很多人第一眼盯着样式——欧式还是中式，繁复还是简约。但决定这扇门能用十年的，是你看不见的焊接工艺和钢材等级。

When choosing an iron gate, many people first look at the style - European or Chinese, complex or simple. But what determines that this door can last for ten years is the welding process and steel grade that you cannot see.

钢材等级是铁艺大门的“底子”。 优质铁艺大门采用国标Q-235A级钢，这是国家标准的碳素结构钢，强度和韧性有保障。中档产品可能使用非标Q-220B级钢，坚固度和耐用性明显下降。选购时可以询问钢材等级，含糊其辞的商家通常用的是非标材料。

The grade of steel is the foundation of wrought iron gates. The high-quality wrought iron gate adopts the national standard Q-235-A steel, which is a carbon structural steel with guaranteed strength and toughness. Mid range products may use non-standard Q-220B grade steel, which significantly reduces their strength and durability. When making a purchase, you can inquire about the steel grade. Merchants who are vague usually use non-standard materials.

焊接工艺决定了门的“骨架”牢不牢。 优质的铁艺大门采用二氧化碳气体保护焊或氩弧焊，焊缝均匀、气密性强、牢固度佳。劣质产品则用普通电焊，焊点粗糙、有沙眼。检查时重点看弯折处和连接点的焊口，有没有断缝、漏焊。焊口处理干净的，防锈底漆才能刷得住。

The welding process determines whether the "skeleton" of the door is firm or not. High quality wrought iron gates are welded using carbon dioxide gas shielded welding or argon arc welding, with uniform welds, strong air tightness, and excellent firmness. Poor quality products are welded using ordinary welding, with rough solder joints and sand holes. During inspection, pay close attention to the welds at the bends and connection points to ensure there are no broken seams or missing welds. Only when the welding joint is cleaned can the anti rust primer be applied.

表面处理是防锈的第一道防线。 室外铁艺大门必须经过热镀锌处理，防锈周期可达20-50年。冷镀锌或直接刷漆的门，一两年就可能从焊口处开始生锈。检验方法很简单：在门底端用硬物轻划一下，看内部是否有红色防锈漆。

Surface treatment is the first line of defense against rust. Outdoor wrought iron doors must undergo hot-dip galvanizing treatment, with a rust prevention period of up to 20-50 years. Cold galvanized or directly painted doors may start rusting from the welds within one or two years. The inspection method is simple: lightly scratch the bottom of the door with a hard object to see if there is red anti rust paint inside.

安装细节暴露“用心程度”。 合格的铁艺大门，门框四角呈45度拼角，增加大门的牢度；劣质产品接口是垂直角，加工简单但结构强度差。拼角工艺费时费力，愿意在看不见的地方花功夫的厂家，产品质量通常更可靠。

The installation details reveal the level of attention to detail. A qualified wrought iron gate with a 45 degree angle between the four corners of the door frame to increase the durability of the gate; The interface of inferior products is a vertical angle, which is easy to process but has poor structural strength. The splicing process is time-consuming and labor-intensive, and manufacturers who are willing to spend effort in unseen places usually have more reliable product quality.

铁艺大门的价格从每平方米300元到2000元不等，差价的核心不在花样繁简，在钢材、焊接和防锈工艺。先看焊接，再谈样式，这个顺序不能反。

The price of wrought iron gates ranges from 300 yuan to 2000 yuan per square meter, and the core of the price difference lies not in the complexity of the design, but in the steel, welding, and rust prevention processes. First look at the welding, then talk about the style, this order cannot be reversed.

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