The second is the control of welding materials to ensure that the welding materials purchased are from formal channels， with quality assurance certificate and certificate， which meet the process requirements; The recovery of welding rod head shall be strictly controlled to ensure the flow direction and dosage; Welding materials shall be baked in strict accordance with the process， and the amount of one-time distribution shall not exceed half a day.
1 Tungsten; can improve the red hardness and thermal strength of steel， and can improve the wear resistance of steel
hportland The specification of pass design I-beam is expressed in cm of waist width. For example， the waist width of No. I-beam is. The types of I-beam include hot-rolled ordinary I-beam，Products Show light I-beam and wide parallel leg I-beam (H-beam). The waist width of hot-rolled ordinary I-beam in China is ~，New South Memphis12Cr1MoVG alloy pipe manufacturerFour elements of purchase attention expressed as No. ~ No.， and the inclination of inner wall of leg is : The pass system of rolled I-beam includes direct pass system， cross pass system and mixed pass system. In addition， I-beam can also adopt special rolling method.
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.
ZTimisoara Phosphorus: it can significantly reduce the plasticity and toughness of steel， sulfur and phosphorus should be strictly controlled. On the other hand，Products Show low carbon steel contains high sulfur and phosphorus， which can make it easy to cut， which is beneficial to improve the machinability of steel
ZfIdler pipe: it is used for electric welding steel pipe of idler of belt conveyor. It is generally made of Q， QA， B steel and steel， with a diameter of -mm. There are certain requirements for pipe tortuosity， water pressure and flattening tests are carried out.
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.
Spiral seam high-frequency welded steel pipe (sy- for pressure fluid transportation is a spiral seam high-frequency welded steel pipe used for pressure fluid transportation，Products Show which takes hot-rolled steel strip as pipe blank， often warm spiral forming and high-frequency lap welding method. The steel pipe has strong pressure bearing capacity and good plasticity，New South Memphis12Cr1MoVG alloy pipe manufacturerFour elements of purchase attention which is convenient for welding and processing; After various strict and scientific inspections and tests， the application is safe and reliable， the diameter of steel pipe is large， the transportation efficiency is high， and the investment in laying pipeline can be saved. It is mainly used for laying pipelines for transporting oil， natural gas， etc.
fDefects of alloy pipe and solutions:
L The tensile strength of seamless pipe is more than ~ times that of ordinary steel， the elastic coefficient is better than that of steel，Reinforcement, galvanized pipe, seamless pipe, welded pipe, alloy pipe, I-beam-Shandong Kaiwen metal material Co., Ltd and has good creep resistance， corrosion resistance and seismic resistance.
CQuality documentsThe production of plastic impregnated welded steel wire mesh is to immerse the formed welded steel wire mesh into a stone groove filled with PVC powder. The dry forming process is complex and the cost is much higher than that of spray welded mesh. Due to different application ranges and different uses， the choice is expensive or cheap， which needs to be determined according to its actual use.
nQClassification by use
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.
It has a thick and dense pure zinc layer covered on the steel surface， which can prevent the steel substrate from touching with any corrosion solution and maintain the steel substrate from corrosion. In general atmosphere， the surface of zinc layer forms a thin and dense zinc oxide layer， so it plays a certain maintenance effect on steel matrix. If zinc oxide and other components in the atmosphere form insoluble zinc salts， the anti-corrosion effect is more ideal.
managementg As long as the pipe material is high-strength alloy steel， including alloy steel pipes with temperature resistance， pressure resistance， wear resistance and low temperature resistance， the welding process shall be focused on preventing the tendency of martensite structure and cracks due to welding high-temperature operation. The general process requirements are that the welding rod shall be selected and baked as required and sent to the welder for use. The oil and water shall be removed before welding on both sides of the weld Rust and sundries shall be removed and cleaned. The welding line energy shall be as small as possible to minimize the swing during the welding process. The arrangement of the last weld shall have annealing effect on the heat affected zone as far as possible. Slow cooling after welding， cover with asbestos cloth， the special rolling method can be used to make full use of the skills of uneven deformation and pass design. For example， when the billet section is narrow and wide I-beam is required to be rolled， the wave rolling method can be used; for example， when the billet is wide and small I-beam is required to be rolled， the negative rolling method can be used Spread rolling， etc.
According to the pipe wall thickness， pipes made of relatively thin materials such as steel strip can be welded with high frequency， and some thin-walled pipes can be welded with shielding gas; Pipes with wall thickness more than mm can be welded by hand.
hportland East West derusting: if the galvanized pipe surface is rusty， the manufacturer will choose East West derusting and polish it with a steel wire brush
oRGalvanized pipes shall be stored in dustproofto keep clean and new . As a professional manufacturer of galvanized pipe， we have produced galvanized pipe products for many years. Welcome friends who need to buy.
The reinforcement mesh of the maintenance platform has the characteristics of extensive application beautiful style， convenient installation and durability， Skirting plate (edge guard plate)， checkered plate guard plate， installation of connectors and other accessories can be added around. The reinforcement mesh is suitable for the reinforcement mesh manufactured in the factory and welded with cold-rolled ribbed reinforcement or cold-rolled smooth round reinforcement. The welded reinforcement mesh for reinforced concrete is a good and efficient material for concrete distribution. Flat steel with different specifications can be used for edge wrapping， Or wrap edges with angle steel， channel steel， square tube， etc; Handles and hinges can also be installed on the reinforcement mesh that needs to be moved or opened frequently.