欧美黑吊大战白妞欧美大片-日批视频免费-超碰视屏-欧美一级特黄aaaaaa-日本午夜精品理论片a级app发布-人人干人人澡-午夜精品久久久久久久99黑人-男人与雌宠物交h-日韩成人免费在线-天天射夜夜爽-九一亚色-香蕉视频首页-一区二区三区视频免费在线观看-欧美日韩亚洲国产一区-久久这里有-我不卡av-婷婷综合在线视频-久久在线视频精品-国产蜜臀在线-午夜欧美成人

全國(guó)熱線服務(wù):

News 當(dāng)前位置:首頁 > News > News >

What is the difference between cylinder tube and rolled tube?

The material of the cylinder tube is mainly hot-rolled seamless steel pipe, which is made by boring and rolling combined cutting process. With the development of my country's industry, the old process of producing hydraulic cylinders has been difficult to meet the needs of production development. The cylinder tube is a new type of energy-saving product.
  Rolled tubeIt refers to steel pipes with strict inner and outer diameter dimensional accuracy (tolerance range), good inner and outer surface finish, roundness, and straightness, and uniform wall thickness. After slight honing, this product can be directly used as hydraulic and pneumatic cylinder block tubes, which is of great significance to saving energy and reducing investment in hydraulic cylinder and cylinder processing equipment. The rolling method is: broaching cylinder block - fine boring cylinder block - rolling cylinder block, the process is three parts. After rolling, the surface roughness of the hole is reduced from Ra3.2~6.3um before rolling to Ra0.4~0.8um, the surface hardness of the hole is increased by about 30%, and the fatigue strength of the inner surface of the quilted tube is increased by 25%.
Rolled tube

上一篇:Features of rolled tubes

下一篇:What problems often occur during quenching of cold drawn pipes