门洞收口翻车，八成出在“门套没按场景定”

　　The collapse of the door opening is likely due to the fact that the door frame was not set according to the scene

　　工程采购电梯门套时，很多人先问“不锈钢还是大理石”，其实该先问：这栋楼是住宅、写字楼、医院还是酒店？人流多不多、会不会碰推车、墙面已经贴砖了没？

　　When purchasing elevator door frames for engineering projects, many people first ask "stainless steel or marble". In fact, the first question should be: is this building a residential, office, hospital, or hotel? Is there a high flow of people, will they touch the carts, and have the walls been tiled?

　　一、材质先看使用场景?

　　1、 Material first depends on the usage scenario

　　写字楼/酒店公区：304不锈钢拉丝或古铜、玫瑰金，防火、抗冲击、十年不褪色；

　　Office/hotel public area: 304 stainless steel brushed or antique copper, rose gold, fireproof, impact resistant, and will not fade for ten years;

　　住宅精装：不锈钢哑口套/包口做窄边更显轻奢，别用厚重大理石，后期空鼓开裂烦死物业；

　　Residential decoration: Stainless steel mute mouth cover/bag mouth with narrow edges for a more luxurious look, do not use heavy marble, as later hollowing and cracking will be annoying to the property management;

　　老旧小区改造：墙面已贴砖、门洞左右不对称，选卡扣式/简易造型不锈钢门套，不用木工板打底，不砸墙不返工；

　　Renovation of old residential areas: The walls have been tiled, and the door openings are asymmetrical on both sides. Choose snap on/simple shaped stainless steel door frames, without the need for wooden boards as a base, and do not smash the walls or rework;

　　潮湿地下车库/连廊：别用普通碳钢或木基材，不锈钢或铝合金才是正解。

　　Wet underground garage/corridor: Do not use ordinary carbon steel or wooden substrates, stainless steel or aluminum alloy are the correct solution.

　　二、安装比板材更决定颜值?

　　2、 Installation determines appearance more than sheet metal

　　已施工瓷砖的电梯口，老式做法用木龙骨+大芯板打底，受潮腐化、门套翘边。现在装配式做法：专用防火木塑纤维板做基层，不锈钢门套卡扣固定，垂直度和收口一次到位。折弯精度差0.5mm，阴角就漏光；量尺时门洞净宽、墙厚、瓷砖完成面不写进图纸，后面全是补焊和打胶遮丑。

　　The elevator entrance, which has been tiled, is made of wooden keel and large core board as a base in the old way, but it has become damp and corroded, and the door frame has curled edges. The current assembly method is to use specialized fire-resistant wood plastic fiberboard as the base layer, fix the stainless steel door frame with a buckle, and ensure that the verticality and closure are in place in one go. The bending accuracy difference is 0.5mm, and there is light leakage at the inner corner; When measuring with a ruler, the net width of the door opening, wall thickness, and the finished surface of the ceramic tiles are not included in the drawings. Instead, they are all repaired by welding and gluing to cover up any imperfections.

　　三、选型时别被“按套计价”带偏?

　　3、 Don't be misled by 'pricing by set' when selecting models

　　门套价格看四样：板材牌号（201/304差一大截）、厚度（0.8/1.0/1.2mm手感天差地别）、表面工艺（拉丝/镜面/镀色）、造型复杂度（开槽式、欧式线、窄边框工时不同）。采购单里不写“板材厚度+镀层标准+安装基层方案”，报价再低也别签。

　　The price of door frames depends on four factors: plate grade (201/304, with a big difference), thickness (0.8/1.0/1.2mm, with vastly different hand feel), surface technology (brushed/mirror/plated), and complexity of shape (slotted, European thread, narrow frame with different working hours). Do not include "board thickness+coating standard+installation base layer scheme" in the purchase order, and do not sign even if the quotation is low.

　　四、淄博/济南周边项目的小经验?

　　4、 Small Experience of Surrounding Projects in Zibo/Jinan

　　北方项目别只看样品亮不亮，要问盐雾试验小时数和焊口抛光工艺；工地批量供货，核心卡“批次色差”和“到货变形率”。门套这东西，装上前都像差不多，装上门厅档次立马分高低。

　　Don't just look at whether the sample is bright or not for the northern project, ask about the hours of salt spray testing and the polishing process of the weld joint; Batch supply at construction sites, with a focus on "batch color difference" and "arrival deformation rate". The door frame looks similar before installation, but when installed in the entrance hall, it immediately distinguishes between high and low levels.

　　电梯门套不是“包个边”，是公共空间的第一道脸面：材质选对、基层做对、量尺写清，后面物业投诉能少一大半。

　　The elevator door frame is not just about "wrapping the edges", it is the first face of public space: choosing the right material, doing the right base, and writing clearly on the measuring tape can reduce complaints from the property management by more than half.