成人免费的性色视频-成人免费大片a毛片-成人免费草草视频-成人免费播放视频777777-成人免费xx-成人免费www在线高清观看

Home > Products and Services > Ring forgings
Ring forgings

Ring forgings are products of the forging industry, a type of forgings. They are ring-shaped objects which are processed by exerting external force on metal blank (without sheet) to make it become a suitable compression force through plastic deformation and shaping requirements. The forging process builds an exquisite grain structure and improves the physical properties of the metal. Ring forgings can be seen everywhere in daily life and are an industrial product.


1. Carbon steel ring forgings: mainly used in machine tool manufacturing, pressure vessel, petrochemical industry, steam turbine manufacturing, tire mold manufacturing and other fields; the main materials include 20#, 35#, 45#, etc.


2.Alloy steel ring forgings: mainly used in machine tool manufacturing, pressure vessels, petrochemical industry, steam turbine manufacturing, nuclear power, marine engineering and other fields; the main materials include 40Cr, 15CrMo, 35CrMo, 42CrMo and so on.


3.Low alloy steel ring forgings: mainly used in machine tool manufacturing, pressure vessels, petrochemical industry, tire mold manufacturing and other fields; the main materials include 16Mn, Q235, Q345 and so on. Representative products include: ring gears for machine tools, pattern rings for tire molds, middle mold sleeves, and ring-shaped forgings for wind power generation;



 

主站蜘蛛池模板: 一级毛片一级毛片一级毛片aaav | 国产处女视频 | 日本a视频| 三级网站免费 | 国产成人一区二区三区影院免费 | 久久国产精品视频一区 | 国产精品一区久久 | 精品999久久久久久中文字幕 | 亚洲综合区图片小说区 | 视频一区二区三区在线观看 | 欧美国产综合视频在线观看 | 亚洲毛片一级巨乳 | 欧美一区二区三区视频 | 天天色图片 | a视频免费在线 | 午夜伦理视频 | 亚洲成人在线视频观看 | 欧美一区二区三区在线视频 | 久久精品大全 | 91好色| 美女一级视频 | 国产成人综合久久 | 日韩毛片在线免费观看 | 国产免费福利片 | 久久99er热精品免费播2018 | 精品一区二区在线欧美日韩 | 美女黄网站人色视频免费国产 | 一区在线看 | 欧美日日日 | 黄网免费在线观看 | 午夜精品视频在线观看 | 国产精品va一级二级三级 | 欧美在线视频你懂的 | 国产精品户外野外 | 最近2019在线中文字幕版 | 亚洲天堂视频一区 | aa爱爱| 亚洲国产综合专区在线播一一 | 女人洗澡一级特黄毛片 | 一二三四视频6+1在线观看免费 | 成年女人在线观看片免费视频 |