Thanks to a zinc tube， stand in the formation and development of painful microorganisms.
0 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，Products Show and the current cannot be adjusted in the middle of one formation). In the process，Saint Jerome 40Cr seamless alloy pipeFeatures and common specifications the stability and formation of arc should be controlled， It can swing properly， and the forming shall be well combined with the necessary swing.
eJonkielThe section of I-beam has good straight pressure and tensile resistance， but the section size cannot resist torsion because the wing plate is too narrow. On the contrary， H steel has its own advantages and disadvantages.
The fourth is the welding process method to ensure the strict implementation of the special operation method of galvanized pipe. The welding process includes pre welding groove inspection， control of welding process parameters and operation methods， post welding appearance quality inspection and post welding nondestructive testing if necessary. Control the welding level and the amount of welding materials at each crossing.
VTerry Ben Main machines and tools
LdClassification by end shape
Polished stainless steel pipes shall be subject to internal inspection and strict manual selection by the steel pipe quality inspector through metal detector (or hydrostatic test)， and qualified products shall be packaged and delivered.
Galvanized pipe has excellent corrosion resistance
wThe alloy tube can be hardened by induction heating， so it has excellent rolling fatigue characteristics and corrosion resistance. Therefore，Products Show this kind of steel has been widely used as the material of rolling mill flap ball screw in rolling mill manufacturers. In addition to the excellent properties of cronidur steel， the modified LNs steel of case hardening steel also has the surface compressive stress characteristics obtained by heat treatment， the inspection and acceptance of the lower layer of the pavement， and the preparation of construction equipment and engineering machinery.
BQuality documentsGalvanized pipes are used in construction， machinery manufacturing， steel construction and other projects， steel structure engineering solar power generation support， power engineering， agricultural and chemical machinery， glass curtain wall，Products Show automobile chassis， airport，Saint Jerome 40Cr seamless alloy pipeFeatures and common specifications highway railing， house construction， pressure vessel， oil storage tank， bridge， power plant equipment， Hoisting and transportation machinery and other welded structural parts with high load.
hTIn our daily life and work， we can often see a lot of steel products. At the same time，Reinforcement, galvanized pipe, seamless pipe, welded pipe, alloy pipe, I-beam-Shandong Kaiwen metal material Co., Ltd 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. Let&#;s discuss the application scope of this kind of pipe today.
The electric welding reinforcement mesh can reduce the damage and consumption to the reinforcement processing process. According to statistics， after deducting the steel consumption increased by unit lapping， it can also save about % of the steel. After it is transported to the site according to the construction degree of the project， it can be hoisted to the working face. There is no need to set a reinforcement processing site on the site， which saves the site and increases the management level of the site. At the same time， it can also solve the problems of noise pollution caused by straightening reinforcement.
Seamless pipe has a high position in steel pipe， and there are many large factors. The main usage has accounted for more than %， which is applicable to all walks of life. Seamless pipe factories in China are widely produced. At present， the number of factories in China is also increasing every year， which is determined by the nature and production conditions of seamless pipe. The common production processes and processes are more complex.
Executive standardrGalvanized pipe: the zinc layer of cold galvanized pipe is an electroplating layer， and the zinc layer is separated from the steel pipe substrate. The zinc layer is very thin. The zinc layer is simply attached to the steel pipe substrate and is easy to fall off. Therefore， its corrosion resistance is poor. In new homes， it is forbidden to use cold galvanized pipes as water supply pipes.
F Frame line crack
In the production process， the stainless glittering pipe is affected by the outside and product surface. Due to galvanizing， the corrosion protection is not corroded. This is the thickness of zinc， and the quality and strength of its coating depend on longevity.
lJonkiel Tungsten; can improve the red hardness and thermal strength of steel， and can improve the wear resistance of steel
aE Welded steel mesh， a new form of reinforcement， is especially suitable for large-area concrete engineering.
The use of welded steel mesh in China is still in its infancy. At present， the use of welded steel mesh in China accounts for less than one of the total amount of steel reinforcement. In the early s， steel welded mesh was listed as a key implementation project by the science and Technology Commission and the Ministry of construction， and specifications and procedures were formulated.