Dalian caseberg equipment manufacturing co. LTD
两个人免费完整版在线观看HD,午夜福利视频Marketing center: dalian Shahekou District changxing street 137-139 fuhung international tower B 2301
两个人免费完整版在线观看HD,午夜福利视频Mail box: email@example.com
两个人免费完整版在线观看HD,午夜福利视频Negotiation hotline: +86-0411-62278511
两个人免费完整版在线观看HD,午夜福利视频Contact number: +86-18018919688
Company website: WWW panamadaze.com
两个人免费完整版在线观看HD,午夜福利视频Kesberg fluid technology (qingdao) co.LTD
两个人免费完整版在线观看HD,午夜福利视频Marketing center:137 Yanqing Road, Huanxiu office, Jimo District, Qingdao
Aluminum alloy lining plastic (PPR pert pb), the physical prestressing technology of the two materials with different elongation (aluminum alloy tube and thermoplastic plastic pipe) by prestressed composite technology effectively combined, don't change the physical properties of the two kinds of material at the same time, effectively solve the plastic pipe and aluminium alloy tube of different materials in a composite application compatibility, sealing;
两个人免费完整版在线观看HD,午夜福利视频Fast installation of aluminum alloy pipe after prestressed composite form of composite pipe material, in the combination of the two kinds of material surface, through the reasonable parameters design, the bonding strength between the layers, make whole composite pipe in cold, thermal uniformity, the linear expansion coefficient of aluminium alloy lining plastic pipe is only about 1/5 of pure plastic tubing. In terms of stiffness and strength, the performance of aluminum alloy lined plastic composite pipe is better than that of single material (aluminum alloy pipe or plastic pipe).
两个人免费完整版在线观看HD,午夜福利视频Pipe pieces (mainly refers to the pipe, pipe fittings, valves, flange, compensator, etc.) and pipe construction must have the factory quality certificate of qualified products of a kind pieces before using should be appearance inspection, its surface should meet the following requirements, not eligible shall not be used without crack, shrinkage, slag inclusion, folding and double skin defects. The depth of corrosion, sag and other mechanical damage is less than the negative deviation of wall thickness allowed by the corresponding product standard.
The machining accuracy and roughness of the groove on the sealing surface of the thread should meet the design requirements or the manufacturing standards with product identification. All alloy pipes, pipe fittings to analyze material light Pu 100% inspection.
两个人免费完整版在线观看HD,午夜福利视频Dalian quick installation of aluminum alloy pipe pipe diameter small or long pipe can increase friction. When building a piping system, the pipe diameter requirement should be slightly larger than the actual requirement. The cost of using 25mm pipe is about 50% higher than that of 12.5mm pipe. However, under the same pressure, the conveying capacity of compressed air can be increased to 4 times.