久久久精品久久久久特色影视_最近中文字幕mv在线视频_国产成人亚洲精v品无码_国产亚洲精品国产_永久免费观看的毛片久久网的网站_啊灬啊灬啊灬快日出水了的话_亚洲精品无码久久久影院男 _2018天天躁夜夜躁狠狠_国产成人精品久久56就是到这里 _国内精品视频成人一区二区

Auto parts, forged parts, stamping parts, etc. that are recycled by automobile manufacturers are all relatively medium-sized objects. The turnover boxes made of ordinary materials such as wood boards and plastics cannot withstand such large load requirements, so heavy-duty turnover iron boxes emerged as the times require. The need for safe and efficient turnover of auto parts. ?

The following issues are urgently needed to be solved in the preparation of standards for metal turnover boxes

In recent years, the country's strong advocacy of environmental protection concepts has made iron box packaging more and more popular. The raw material of iron box packaging is not "iron". It is actually a packaging box with a frame structure composed of steel components such as steel and galvanized sheets.

In order to meet the visualization needs and maintenance requirements during the transportation and turnover of turnover iron boxes, spraying treatment is required after the welding of turnover iron boxes to improve the corrosion and aging resistance of the turnover boxes and ensure their durability and longevity. Next, let’s take a look at what are the requirements for plastic spraying of iron boxes? ?