铁艺护栏的选购，怕只看“样子”不看“参数”。以下5个核心参数，决定了护栏的安全性和使用寿命。

The most important thing when choosing wrought iron guardrails is to only look at the appearance without considering the parameters. The following 5 core parameters determine the safety and service life of the guardrail.

参数一：材质——Q235碳素钢是底线

Parameter 1: Material - Q235 carbon steel is the bottom line

铁艺护栏所有构件多采用Q235碳素钢。Q235A级钢比非标Q220B级钢要好很多——更结实、更光亮、更耐日晒风吹。常用材料规格有38×25×1.5mm方通、30×30×1.5mm方通、20×20×1.5mm方通、14×14方钢、14×4mm扁铁等。

All components of the wrought iron guardrail are mostly made of Q235 carbon steel. Q235A grade steel is much better than non-standard Q220A grade steel - it is stronger, brighter, and more resistant to sunlight and wind. Common material specifications include 38 × 25 × 1.5mm square tube, 30 × 30 × 1.5mm square tube, 20 × 20 × 1.5mm square tube, 14 × 14 square steel, 14 × 4mm flat iron, etc.

参数二：高度——不同场景不同标准

Parameter 2: Height - Different standards for different scenarios

护栏高度有严格的国家规范。室内栏杆高度不宜小于900mm，室外栏杆高度不宜小于1100mm。多层住宅临空栏杆高度不低于1.05m，中高层住宅临空栏杆高度不低于1.1m。楼梯水平段栏杆长度大于0.50m时，高度不低于1.05m。家庭院落常规围栏净高≥1.2米，临街面建议1.5米以上防止翻越。

The height of guardrails has strict national regulations. The height of indoor railings should not be less than 900mm, and the height of outdoor railings should not be less than 1100mm. The height of the overhead railings in multi-storey residential buildings should not be less than 1.05m, and the height of the overhead railings in medium and high-rise residential buildings should not be less than 1.1m. When the length of the horizontal railing of the staircase is greater than 0.50m, the height should not be less than 1.05m. The net height of the regular fence in family courtyards should be ≥ 1.2 meters, and it is recommended to have a height of over 1.5 meters on the street.

参数三：间距——≤110mm是安全红线

Parameter 3: Spacing - ≤ 110mm is the safety red line

栏杆垂直杆件间净空不应大于110mm。这是防止儿童攀爬和头部卡夹的安全红线。栅栏竖管间距一般控制在110mm以内。若家中有幼童，需增设横向挡板阻断攀爬路径。

The clearance between the vertical members of the railing should not exceed 110mm. This is a safety red line to prevent children from climbing and getting stuck on their heads. The spacing between fence vertical pipes is generally controlled within 110mm. If there are young children at home, horizontal barriers should be added to block the climbing path.

参数四：立柱——间距与规格

Parameter 4: Column - spacing and specifications

立柱一般采用方钢或圆钢，间距控制在1.5米以内，确保整体稳定性。厂区围栏立柱多用60×60mm或80×80mm方管，横梁不低于40×40mm。立柱安装可选择法兰盘打膨胀螺丝安装在水泥地面上，也可将立柱做长30公分直接预埋在地面里面。

The columns are generally made of square or round steel, with a spacing controlled within 1.5 meters to ensure overall stability. The fence posts in the factory area are mostly made of 60 × 60mm or 80 × 80mm square tubes, and the crossbeam is not less than 40 × 40mm. The installation of the posts can choose to install them on the cement floor with flange plates and expansion screws, or the posts can be made 30 centimeters long and directly embedded in the ground.

参数五：防锈工艺——三重处理是标配

Parameter 5: Rust prevention process - triple treatment is standard

优质护栏必须经过 “酸洗除锈-热镀锌-高温烤漆/静电喷塑”三重处理。热镀锌层厚度需达到60μm以上。表面经防锈底漆与金属漆双层处理。也可采用先热镀锌、再纯聚酯彩色粉末喷涂、再喷漆处理。

High quality guardrails must undergo a triple treatment of acid pickling, rust removal, hot-dip galvanizing, high-temperature baking paint, and electrostatic spraying. The thickness of the hot-dip galvanized layer should be at least 60 μ m. The surface is treated with a double layer of anti rust primer and metallic paint. Alternatively, hot-dip galvanizing can be used first, followed by pure polyester colored powder coating, and then spray painting treatment.

铁艺装饰花件应采取熟铁铸造或Q235材质手工锻打。做工扎实的护栏，焊接处平整无毛刺，表面涂层均匀。

Iron decorative ornaments should be cast from wrought iron or hand forged from Q235 material. A well crafted guardrail with smooth and burr free welding joints and uniform surface coating.

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