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

Flame cutting nozzle - concept

Release time: 2017-06-12 11:00:45

A metallurgical apparatus for cutting a nozzle for cutting a flame, characterized in that the preheated oxygen passage is an inverted cone and the gas passages inside the cutting nozzle are not in communication with each other, The annular cavity at the nozzle outlet. The utility model has the advantages of simple structure, safe operation and convenient operation, avoiding the flame cutting of the hot continuous casting billet, splashing the slagging and cutting the nozzle outlet gas (or preheating the oxygen) channel, preheating the oxygen back to the gas pipeline and tempering; To overcome the phenomenon of metal slab cutting, reducing the consumption of metal blanks.



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