亚洲最黄视频-亚洲最大在线-亚洲最大网址-亚洲最大色网-亚洲最大色视频-亚洲最大情网站在线观看

The condition of Tianjin seamless steel tube factory for storing precision bright pipe

Seamless tubes for seamless steel tubes do not have any requirements for storage conditions. If you buy ordinary precision light pipe, so for some, precision light pipe volume of the industry is relatively large, you need to establish a professional precision bright tube storage room. Because the ordinary precision bright tube, its own antioxidant properties, is still relatively poor. If such a pipe is placed directly outside the room, it will give the best conditions for precision bright pipes and rust. Because of the room temperature, oxygen environment, the precision bright pipe rust speed is very fast. If it rains a little bit from time to time, the pipe will rust soon. But there is no limit to this, because the pipe itself has very superior oxidation resistance. Even if the bright tube is placed in the open environment, the pipeline will not rust. It's easy to bring in, and it's a problem of use. In hardness, compression capacity, have a certain advantage. But just a few years ago, a lot of people will use to pipeline industry, no precision bright tube, as the main material, this is why? This is because the precision of the bright, although there are a lot of advantages, but also there is a very obvious disadvantage. That is the ordinary precision bright tube, for the use of the environment, there is a certain requirement. For example, in some boilers and combustion chambers, piping systems are needed to transport fuel into it. And in these places, the temperature will be very high because of the burning of the fuel. Even if the precision bright tube itself, the melting point is relatively high, it may not be able to adapt to such a high temperature. Once the temperature in the environment, almost reached the limit of the pipeline, the performance of the pipeline will be greatly reduced.
If you use a precision light pipe, there is no need to worry about this problem, because the precision bright pipe, to ensure the strength of the pipe torsion. The reason why the precision bright tube, has such ability, that is in the production of technology, and ordinary precision bright tube, opened a certain gap. Ordinary precision bright tubes, in the process of production, will only go through a rolling, or there is no such program. In this way, the precision of the polished tube will be weaker, as long as the pipeline, after some complex processing, then there will be some bad deformation. But the precision bright tube is different, this kind of pipe production, need to pass many times rolling.

RELEASE TIME:2016-11-18 09:24
欧美A级大胆视频 | 国产成人久久精品蜜臀 | 又白又嫩又紧又大又粗又多水视频 | 女人自慰久久三级片黄色片 | 国产无码免费视频 | 久久久99久久久无码国产输拍 | 无码熟妇人妻AV又大又粗又爽 | 2025国产精品主播在线 | 17C一区二区三区 | 一级a一级a爰片免费免会员四 | 17c官网视频一区二区 | 亲子乱亲BBBB | 人人爽人人爽人人爽人片 | 粉嫩无套白浆潮喷蜜桃AV | 91精品久久久久久久不卡 | 扒开极品粉嫩小仙女 | 日本高清码免费视频com | 西西特级444人体大胆图片 | 网禁拗女呦免费看看 | 自拍偷拍亚洲人妻另类小说 | www..com日韩av| 国产成人愉拍精品久久 | 精人妻无码一区二区三区 | 成人免费无码黄漫视频 | 三级黄色电影在线观看 | 一级A爱片久久成人毛片 | 孕妇被多人伦流澡到高潮 | 免费看一级无码成人片 | 99热综合久久亚洲国产 | 日本aaaa动漫 | 园产乱人乱偷精品视频 | 欧美精品久久久久久 | 17c在线精品无码秘 入口 | 激情文学综合另类久久 | 蜜桃臂91成人无码精品 | 无码人妻少妇色欲AV一区二区 | 一级做a爰片久久毛片免费看 | 91精品福利在线观看 | 精品人妻久久久久久888不卡 | 好吊视频蜜桃一区二区三区网站 | 国产又爽又黄又嫩又猛又粗 |