日本熟妇乱子伦高清视频_美国久久网_午夜三级片网页_a毛片毛片看免费无码,午夜人网站,亚洲香蕉中文日韩,激情五月97超碰图片,国产微拍精品一区二区,尤物在线,波多野结衣亚洲一区,亚洲欧美综合在线777





News List

Installation of the measurement: oxygen - acetylene flame cutting concept and content

Release time: 2017-06-12 11:09:11

Oxygen-acetylene flame maximum temperature of up to 3300 ° C, the metal surface heating faster. Using different specifications of the torch and cut mouth, you can cut different thickness of low carbon steel, medium carbon steel and low alloy steel. Oxygen-acetylene flame cutting is a traditional cutting method, the application of a wide range, usually cut the thickness of the range of 3 ~ 150mm. Oxygen-acetylene flame cutting is gradually replaced by oxygen-propane flame cutting due to poor safety, serious environmental pollution and high cost of acetylene gas production.



Copyright ? NINGBO AOLIAN WELDING&CUTTING MACHINERY INDUSTRY AND TRADE CO., LTD

Tel.: 0574-63077765         Fax: 0574-63077766
Add: No.98 Ma Tam Road,Hangzhou Bay New Area,CIXI, Ningbo, 315336, P.R.China