Spiral seam high-frequency welded steel pipe (sy- for general low-pressure fluid transportation takes hot-rolled steel strip coil as pipe blank and is often spiral formed at warm temperature. High frequency lap welding method is selected for welding spiral seam high-frequency welded steel pipe for general low-pressure fluid transportation.
8Since the s， with the rapid development trend of high-quality hot strip mill production and the development of electric welding and testing technology， the welding quality has been continuously improved， the types， specifications and models of welded steel pipes are increasing， resistor welded pipe，Products Show (high frequency，يونكييرdn50 المجلفن الأنابيبتحدث عن الاتجاهات الجديدة low frequency) gas welded pipe， furnace welded pipe.
qRimusky The small length of repair welding is mm; The raw material shall not exceed mm after grinding by welding edge.
Spiral welded pipe: it is made by rolling low-carbon structural steel or low-alloy structural steel strip into pipe blank according to the viewpoint of certain spiral line (called forming angle)， and then welding the pipe seam. It can produce large-diameter steel pipe with narrow strip steel. Spiral welded pipe is mainly used for oil and natural gas transportation pipeline， and its standard is expressed by outer diameter * wall thickness. Spiral welded pipe has single-sided welding and double-sided welding. The welded pipe shall ensure that the hydrostatic test， tensile strength and cold bendingof the weld meet the requirements.
ZRocafortCutting machine， electric welding machine， polishing machine， electric hammer， etc
YkSpeed up the construction progress: weld the mesh with reinforcement to allow the rapid construction of the project. The required laying of welded steel bars is provided，Products Show so concrete can be poured， steel cutting， stitching， etc.， and the arrangement can be strengthened. ？ saving construction time? The construction progress is greatly accelerated and the construction period is shortened.
In our daily life and work we can often see a lot of steel products. At the same time， among many steel products， the figure of galvanized pipe is particularly prominent. This is because this kind of pipe will be applied to many engineering construction we often see in our life. There are also countless products processed with this kind of pipe. For example， in the field of mechanical equipment processing we often see， the application of galvanized pipe is more frequent. Lets discuss the application scope of this kind of pipe today.
Welded steel mesh is aesthetically pleasing.
hI-beam is widely used
XThe reinforced concrete surface reinforcement method has the advantages of simple construction technology and strong adaptability， which can greatly improve the bearing capacity，Products Show flexural stiffness and ductility of the brick wall. At the same time， its natural frequency can be changed to improve its performance in normal use. It is mainly applicable to the solid wall，يونكييرdn50 المجلفن الأنابيبتحدث عن الاتجاهات الجديدة porous hollow brick wall and mm thick empty bucket brick wall with no cracks and shear in the original wall.
TWelcome calls The zinc layer obtained by electroplating is relatively pure， which corrodes slowly in acid， alkali and other fog， and can effectively maintain the steel matrix;
gA According to the purpose， the welded pipe has general purpose and high temperature and high pressure. The pipe used in the latter is often special alloy steel. The problem of shrinkage cracks in the welding process and the mechanical properties of the pipe in the heat affected zone must be considered and solved， and the mechanical properties of the pipe in the heat affected zone will not be greatly changed due to the influence of welding operation.
They are not affected by surrounding factors and processes including corrosion.
The advantage of the reinforcement mesh system is ecological. It is filled with natural stone materials. There is a gap between the stone materials to allow plants to grow in it. It can also plant plants on it. It has the dual effects of engineering slope protection and plant slope protection. The Ecological Grid mat is a combination with a height of cm ~ cm， mostly a multi grid box separated by spacer mesh.
Quotation sheetnBlanking shall be carried out according to the design and site， and then the groove shall be made with a grinder with a groove angle of ° ~ °. Fix the processed pipe on the support，Reinforcement, galvanized pipe, seamless pipe, welded pipe, alloy pipe, I-beam-Shandong Kaiwen metal material Co., Ltd and the gap between the two pipes is mm ~ mm， and then weld.
AKey technical characteristics of alloy pipe
Steel pipes can be classified by their models:
nRimuskyGalvanized pipe has excellent corrosion resistance
pP In order to ensure the welding quality of pipes welders shall be trained， tested and qualified. In addition to the basic theory， the welder should consider the operation skills. The pipe welding process may include several postures of overhead welding， vertical welding and overhead welding (when the pipe cannot rotate). The size of current should be selected to take into account the formation of vertical welding and overhead welding (some pipes are not very large， and the current cannot be adjusted in the middle of one formation). In the process， the stability and formation of arc should be controlled， It can swing properly， weaken and eliminate the adverse effects of sulfur