Seamless pipe is made of steel block or solid pipe blank， and then made by hot rolling， cold rolling or cold dial. Seamless pipe plays an important role in Chinas steel pipe industry. Seamless pipe production processes are relatively rich， generally according to the corresponding steps of processing and production.
0Galvanized pipe: the hot-dip galvanized pipe base plate and molten electroplating solution are combined physically and chemically to form a dense corrosion-resistant structure of zinc iron alloy layer. The alloy layer is integrated with the pure zinc layer and the steel pipe substrate. Therefore， it has strong corrosion resistance.
aAbbotsfordPlan option : Martensitic chromium alloy pipe，
In our daily life and work，Products Show we can often see a lot of steel products. At the same time，Windsor45 tubes en acier sans soudure de petit diamètreQuel est le rôle de la description 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.
JChewing gumClassification by production method
XvWhat are the advantages of seamless pipe?
Seismic and cracking performance the longitudinal and transverse bars of the welded reinforcement mesh form a network structure， so it has good bonding and anchorage with the concrete， and the load can be evenly distributed， which obviously shows the seismic cracking performance of the reinforced concrete structure. According to the actual test the welded reinforcement mesh laid on the road can reduce the occurrence of cracks than the manual binding mesh. It greatly reduces the unnecessary cost generated manually in the construction and shortens the construction period. The use of reinforcement mesh is simple and convenient， and the reinforcement mesh is convenient for transportation.
In addition to these， the advantages of galvanized pipe are also reflected in some other aspects. For example，Products Show it has become a part of galvanized steel pipe on the steel surface. In this way， the durability of its coating is more reliable. And when the zinc coating forms a special metallurgical structure， this structure can withstand mechanical damage during transportation and use. When in use， even in depressions sharp corners and hidden places can be protected in many ways. It is very convenient during construction. It really saves time and effort. It is because of so many advantages that the utilization rate of this product is very high. And it can avoid the time required for painting on the site after installation. If you want to purchase on your occasion， remember to go to the manufacturer， so that the price will be more favorable.
dMixed Scabs are distributed periodically， and the situation after casting and rolling is significant through edge flame peeling crack inspection or billet scratch flame removal.
WGalvanized pipe is a layer of galvanized ordinary steel. This is a layer and is a great anti-corrosion protection.
YQuality recommendationThe storage of galvanized pipes should pay attention to several points. The first is the storage location. It cannot be placed in the open air， because in the open air， not only the safety of various products such as theft， but also corrosion problems will occur. Open air sites are vulnerable to various extreme weather conditions. Large amounts of rain or snow will erode the zinc coating on the surface to the greatest extent which may lead to rust of the product. The second is the details of storage. It is not directly exposed to the sun. It shall be cooled and dried and shall not be stored with corrosive articles.
jVThe production methods of seamless pipe are roughly divided into cross rolling method and extrusion method. The cross rolling method is to drill the tube with a cross roll，Products Show and then extend it to the rolling mill. This method has fast production speed， but has high requirements for the workability of the blank. It is mainly suitable for the production of carbon steel and low alloy steel pipes. The extrusion law is to pierce the blank or ingot with a punch，Windsor45 tubes en acier sans soudure de petit diamètreQuel est le rôle de la description and then squeeze it with a steel pipe with an extruder. The efficiency of this method is lower than that of cross rolling method. It is suitable for producing high-strength alloy steel pipe. The billet or ingot must be heated before cross rolling method and extrusion method. The produced steel pipe is called thermal correlation. Steel pipes produced by hot working can sometimes be cold worked as needed. There are two methods of cold working. One is cold drawing. In other words， pull the pipe to the pipe and tilt it to make the steel pipe gradually thinner and longer. Another method is cold rolling. The method of applying the hot smoke invented by brother to cold processing. The cold working of seamless pipe can improve the dimensional accuracy and finishing of steel pipe， and improve the mechanical properties of materials.
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.
Generally， what are the customers requirements and standards during acceptance? When the galvanized pipe is accepted， you can judge whether it is qualified from the appearance， or whether there are problems such as missing plating or bubbles on the outer wall of the whole square pipe. Only by solving these problems in time can it be judged as qualified and better used.
PromotionfLongitudinal welded pipe has the advantages of simple production and processing technology， high production efficiency， low cost and rapid development trend. The compressive strength of spiral welded pipe is generally higher than that of straight welded pipe. Narrow blank can be used to produce welded pipe with large pipe diameter，Reinforcement, galvanized pipe, seamless pipe, welded pipe, alloy pipe, I-beam-Shandong Kaiwen metal material Co., Ltd and blank with the same total width can also be used to produce welded pipe with different pipe diameter. However， compared with the straight seam pipe with the same length， the welding length is increased by ~ ， and the production rate is low.
RX-ray or ultrasonic testing shall be carried out for repair welding of alloy pipe， dead end welding of strip steel and circumferential seam. For the spiral welding of steel for the transportation of flammable general liquids， yibai%sx ray or ultrasonic testing shall be carried out. For the spiral welding of alloy pipes for the transportation of water， wastewater， heating steam and other general liquids， X-ray or ultrasonic testing sampling inspection (%) shall be carried out.
Pickling: if the material cannot be removed after cleaning， pickling will be selected. Pickling of galvanized pipe is divided into chemical and electrolytic. How to prevent white rust of galvanized seamless steel pipe? It has a certain anti-corrosion effect on the pipeline.
rAbbotsfordSeamless pipe is a long steel with hollow section and no joints around it. There are more than production plants under more than companies in more than countries producing seamless pipes， including more than plants under more than companies in countries.
kUInstalling the pipe structure means the complexity of some elements.
If the surface of the welded pipe is rusty， we can polish the appearance of the welded pipe with a wire brush to prevent rust.