国产精视频-国产精品最新资源网-国产精品最新-国产精品综合在线-天天白天天谢天天啦-天天爱综合网

您當前的位置:新聞中心 >> 行業動態
How do I identify a refurbished valve?
發布時間:2020/5/8

Nowadays, the valve market is mixed with each other. Illegal vendors make profits by counterfeiting and refurbishing valves, which brings great safety risks to installation works.Therefore, it is necessary to show you how to identify refurbished valves.At present, there are several main methods of valve counterfeiting among dealers in the valve market:

1. Make valves with iron and carbon steel and repair scrap valves for secondary filling.

2. Put the registered trademark of big brand manufacturer on the valve products of local small factories to falsify.

3. Counterfeit users, dealers and agents of famous large factories to sell dog meat with lamb heads.

4. Make steel prints and type ordinary valves into D valves for profit.

Valve renovation is a great hazard, which not only disturbs the market order, but also causes great potential hazards to construction quality and great social hazards.We just don't know how it is counterfeited. We must also identify retrofitted valves. Let me show you how to identify retrofitted valves.

1. Look at the color, the color of the refurbished valve is very different from that of the genuine product. Most of these low-price materials are white in appearance, which is quite different from the greenish color of valve steel.

2. Look at the steel stamp, the genuine valve steel stamp has been embossed before the valve has been heat treated, using professional steel stamping technology, so the font is clear.Refurbished valves have an uneven and confused font.
3. Look at the oil marks. In order to achieve the purpose of rust prevention, the fake and refurbished valves will be coated with thick oil stains on the valve surface, which will reduce the gloss of the valve body itself.

4. Look at the gate, refurbished valve gates generally have ground marks and rust.

5. Remove the upper nut of the valve stem and the identification plate. Look at the material of the lock nut inside. The genuine material is brass, otherwise it is counterfeit.

Hope to provide some help to friends engaged in engineering installation and purchasing, to resist the refurbishment of counterfeit valves and to ensure the construction quality is safe and effective.


+86-21-69755272
qrCode
主站蜘蛛池模板: 一区二区三区四区国产| 老牛影视看片专区在线观看| 97精品国产91久久久久久| 北条麻妃初尝试黑人在线观看| 男人操女人b视频| 成人久久免费视频| 风间由美全部作品bd在线| 在线无限看免费粉色视频| 美女与男人对肌免费网站| 日本亚洲一区二区| 乱淫的女高中和老头| 女bbbbxxxx毛片视频| 日韩 亚洲 翔田千里 在线| 久久99国产亚洲高清观看韩国| 在线观看a级片| 青春草在线视频| 日本xxxxxxxxx18| 一二三四视频在线社区7| 日本一区二区三区免费高清在线| 久久久久一级片| 日本大学生第一次三级| 一级毛片一级毛片| 毛片网此| 欧美性白人极品1819hd高清| 九九热在线精品| 女人的眼泪韩剧在线观看中文版| 亚洲曰本大成网站mmm| 在线播放视频| 波多野结衣系列在线看第1集| 91啦国产| 爱色网站| 久久精品国产2020| 欧美一线视频| 96精品国产高清在线看入口| 伦理在线免费观看| 夜夜夜夜夜夜夜工噜噜噜| 日本人吃奶玩奶虐乳| 99久久精品免费看国产漫画| 美女被爽| 久久久久久秋霞理论网片伊人| 岛国精品成人|