铁艺大门安装，90%的业主把注意力全放在门扇材质、花纹、表面涂层上，觉得只要大门本身没问题就万事大吉。结果用不了多久——合页变形、门扇下垂、锁具生锈、门框松动——问题一个接一个。厂家却说：是辅料和五金件出了问题，不在质保范围内。

90% of homeowners pay full attention to the material, pattern, and surface coating of the iron gate installation, believing that as long as the gate itself is fine, everything will be fine. The result won't be long - the hinges will deform, the door leaf will sag, the locks will rust, and the door frame will loosen - one problem after another. The manufacturer said that there was a problem with the accessories and hardware, which is not covered by the warranty.

隐形坑一：合页以次充好，薄铁皮冒充重型合页

Invisible pit one: hinges pass off inferior as good, thin iron sheets pass off as heavy-duty hinges

铁艺大门一扇重达几十上百公斤，全靠合页支撑。劣质厂家用薄铁皮冲压的合页伪装成加厚重型合页，实际壁厚只有1mm，承重能力极差。装完半年不到，合页变形、门扇下垂、开关卡顿——甚至合页断裂、门扇脱落，这都是真实发生过的安全事故。

The iron gate weighs tens or even hundreds of kilograms and is supported entirely by hinges. Poor quality manufacturers use thin iron sheet stamped hinges to disguise them as thick heavy-duty hinges, but the actual wall thickness is only 1mm, and the load-bearing capacity is extremely poor. Less than half a year after installation, the hinges have deformed, the door leaf has drooped, the switch is stuck - and even the hinges have broken and the door leaf has fallen off. These are all real safety accidents that have occurred.

避坑指南：

Avoiding pitfalls guide:

材质必须选304不锈钢或加厚冷轧钢，表面做镀锌防锈处理，不能用普通铁皮合页

The material must be selected as 304 stainless steel or thickened cold-rolled steel, with a galvanized and rust proof surface treatment, and ordinary iron sheet hinges cannot be used

壁厚必须≥3mm，单扇门重超过100公斤，必须用承重800公斤以上的重型合页

The wall thickness must be ≥ 3mm, and if the weight of a single door exceeds 100 kilograms, a heavy-duty hinge with a load-bearing capacity of over 800 kilograms must be used

单扇高度超过2米的大门，至少要装3个合页；超过2.5米，要装4个合页，分散门扇重量

A single door with a height exceeding 2 meters must be equipped with at least 3 hinges; Over 2.5 meters, 4 hinges should be installed to distribute the weight of the door leaf

合页必须带轴承设计，开关顺畅无卡顿，内部带密封防尘防水设计——冬季不会因雨雪渗入结冰导致冻住异响

The hinge must have a bearing design, with smooth and seamless opening and closing, and an internal sealed, dust-proof, and waterproof design - it will not cause freezing and abnormal noise due to rain and snow infiltration and freezing in winter

合同里明确合页的品牌、规格、质保年限，避免厂家以次充好

Clearly specify the brand, specifications, and warranty period of the hinges in the contract to avoid manufacturers passing off inferior products as good

隐形坑二：锁具用室内锁冒充户外锁，冬季冻住打不开

Invisible Pit 2: Using indoor locks to impersonate outdoor locks, which cannot be opened in winter due to freezing

锁具是大门的安全核心，但很多厂家配的是普通室内防盗锁，没有防水防尘密封设计，更没有防冻处理。北京冬季零下十几度，雨雪水渗入锁芯直接结冰，锁芯冻住打不开，甚至锁体短路报废。防盗等级也不达标，劣质仿牌锁具很容易被暴力撬动。

Locks are the safety core of doors, but many manufacturers provide ordinary indoor anti-theft locks without waterproof and dustproof sealing design, and without anti freezing treatment. In winter in Beijing, the temperature drops to minus ten degrees Celsius, and rain, snow, and water can seep into the lock core and freeze it directly. The lock core freezes and cannot be opened, and even the lock body is short circuited and scrapped. The anti-theft level is also not up to standard, and low-quality counterfeit locks are easily pried by violence.

避坑指南：

Avoiding pitfalls guide:

锁具防护等级必须达到IP65以上，带全密封防水防尘设计，锁芯有防水保护盖

The protection level of the lock must reach IP65 or above, with a fully sealed waterproof and dustproof design, and the lock core has a waterproof protective cover

锁体内部必须加注防冻润滑脂，零下十几度也能正常开关

The lock body must be filled with antifreeze grease inside, and it can be opened and closed normally even at temperatures below minus ten degrees Celsius

防盗等级必须达到C级（目前民用最高等级），防技术开启、防暴力撬动

The anti-theft level must reach level C (currently the highest level for civilian use), with anti technology activation and anti violent prying

预算充足可选户外专用智能锁，带锁芯防冻加热功能，确认是户外专用款，不能用室内智能锁替代

If the budget is sufficient, you can choose an outdoor dedicated smart lock with a lock core anti freezing heating function. It is confirmed to be an outdoor dedicated model and cannot be replaced by an indoor smart lock

隐形坑三：膨胀螺栓偷工减料，门框固定形同虚设

Invisible Pit 3: Expansion bolts cut corners, door frame fixation is virtually non-existent

一些厂家用普通塑料膨胀钉甚至小号铁膨胀螺栓固定门框，根本吃不住几十上百公斤的门扇重量。正确的做法是：每个立柱预埋8mm厚镀锌预埋钢板，门框用膨胀螺栓固定在钢板上，禁止仅用塑料膨胀钉固定墙体。验收要点：晃动门框无松动，手掰不摇晃。

Some manufacturers use ordinary plastic expansion nails or even small iron expansion bolts to fix door frames, which cannot withstand the weight of tens or even hundreds of kilograms of door leaves. The correct approach is to embed 8mm thick galvanized embedded steel plates in each column, and fix the door frame to the steel plate with expansion bolts. It is forbidden to only use plastic expansion nails to fix the wall. Acceptance criteria: Shake the door frame without looseness, and do not shake by hand.

一句话总结： 铁艺大门安装，门扇只占七分，合页、锁具、预埋件这三分看不见的“关节”才是决定大门能用几年的关键。合同写明五金品牌规格，比听销售说一百句“质量好”都管用。

In summary, the installation of wrought iron doors requires only seven parts of the door leaf, and the three invisible "joints" of hinges, locks, and embedded parts are the key to determining how many years the door can last. The contract specifies the hardware brand specifications, which is more effective than hearing a hundred words from the salesperson saying 'good quality'.

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