The pipe has the feature of dense and homogenous microstructure,high accuracy, standard tooth form and low residue insidel. The internal surface area is increased *5%***0% and the heat transfer coefficient increased *0%***0% than the specification of the smooth copper pipe. This kind of copper pipe usually applys for air condition industry. Adapt the development tendency of air condition’s high energy efficient,pro-environment and healthy. Please contact with me directly for the details. Luoyang Dazhi Industry Co. Ltd. is an entity enterpise specializing in non-ferrous metal products selling, spare parts of mining and metallurgy machinery manufacturing.The registerd capital of Dazhi is *0,**0,**0RMB. The leading products including copper&copper alloys tube,bar,strip,sheet and precise copper tube;aluminium & aluminium alloys tube,strip and sheet; titanium sponge;mining & metallurgy machinery and parts etc.We provide one-stop supply service for the customer and satisfy our customer’s demand in various areas. Based on the local natural resources and our management team’s rich experience in domestic and international business, we are committed to provide our customers quality products and perfect services.