The correct and reasonable use of galvanized pipe can play a better role. The product can be widely used in the market because of its obvious performance advantages. Both strength and toughness are worth our choice. Lets see what the specific uses are and what the acceptance standards are?
4 Carbon: the higher the carbon content， the higher the hardness of steel， but the worse its plasticity and toughness
vRichmond mountaina. In the forming process， the thick steel plate has uniform deformation， small internal stress and no scratch on the surface. The alloy pipe produced and processed has higher coordination ability in the scope of size， specification and model of diameter and wall thickness，Products Show especially in the production and manufacturing of steel structure design grade thick wall pipe especially medium diameter small thick wall pipe，Saskatoon2205 duplex steel welded pipeThe decline of social inventory has accelerated which has incomparable advantages of other processing technologies， and can meet a large number of customer regulations on the specification and model of alloy pipe.
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.
ZRamaAccording to the shape of the product， special flour， welding or ordinary thread connection shall be used.
Vo After chromate passivation， the zinc coating forms white， colorful and military green， which is beautiful and generous and has certain decoration;
Pickling stainless steel pipe. When removing grease， rust prevention， spot welding，Products Show oxide layer， free iron and other dirt， the surface shall be treated with silver to evenly slow down the pickling surface prevent metal corrosion and hydrogen embrittlement and inhibit fog production.
Straight seam welding is adopted for larger diameter welded pipe， and spiral welding is mostly adopted for large diameter welded pipe; According to the top appearance of seamless steel pipe， it is divided into annular welded pipe and special-shaped (square， pitch， it is divided into mining anti liquid transportation welded steel pipe， hot-dip galvanized welded steel pipe for bottom pressure liquid transportation， continuous conveyor idler electric welded steel pipe， etc. it is arranged from small to large according to diameter * wall thickness according to the specification，Products Show model and dimension table in the current standard.
eWith the development of steel structure buildings， only I-beam is not enough，Saskatoon2205 duplex steel welded pipeThe decline of social inventory has accelerated which is easy to lose stability for load-bearing columns.
DThere are many processes in the process of welded pipe processing， and every detail needs our attention. Welded pipes need to be treated by various processes before application. Heat treatment of welded steel pipe is an important link in the process of welding steel pipe. Hot working is a metal hot working process in which metal materials are heated， insulated and cooled in a certain medium， and the metal properties are controlled by changing the metallographic structure on the surface or inside of the material.
ZmanagementClassification by use
fBThe advantages of shiny galvanized pipe are:
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，Reinforcement, galvanized pipe, seamless pipe, welded pipe, alloy pipe, I-beam-Shandong Kaiwen metal material Co., Ltd the stability and formation of arc should be controlled， It can swing properly， and the forming shall be well combined with the necessary swing.
High percentage of metal strength.
Installation requirementsnBecause of this characteristic， seamless pipe is widely used in oil transportation natural gas， natural gas， water and some solid materials transportation. Smooth steel pipe has strong bending advantages compared with other steel pipes. And the smooth steel pipe is also light in weight. It is a very economical single-sided steel.
ZAfter determining the reasonable pickling agent and polishing solution， it is very easy to carry out hot galvanizing for relevant alloy pipes. Use "phosphating treatment" to degrease the pipes of electrolytic machine equipment， put them into the aqueous solution with zinc salt after pickling and passivation， connect the negative level of electrolytic machine equipment， put them into the cold-rolled steel plate in the direction corresponding to the pipes， and connect the switching power supply， a layer of zinc is deposited in the pipe.
The laying of reinforcement mesh can speed up the construction speed and shorten the construction period. In order to reduce the impact of construction on road traffic， the reinforcement and maintenance works of the two bridges are expected to be completed in the middle of next month.
eRichmond mountain It is the trend of the development of steel bar industry to take the road of steel bar welding mesh in steel bar construction.
gZ When the end span plate is connected with the concrete beam for structural reinforcement， the length of the surface mesh reinforcement extending into the beam shall not be less than d. When the beam width is small， the extended reinforcement shall be bent . When the perimeter of the floor is poured integrally with the concrete beam or wall， the length of the surface mesh reinforcement extending into the beam shall not be less than the anchorage length of the small reinforcement required by the standard (without transverse reinforcement)， when the beam width is small， the extended reinforcement shall be bent.
The 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， 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， 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.