Small longitudinal crackThe high-temperature passivation treatment of alloy pipe is to obtain the passivation treatment film by heating in the heat treatment equipment. Before passivation treatment, the surface layer of parts must be removed to remove waste. At a higher temperature,Kisquia10# steel seamless pipe, the passivation treatment film can be obtained according to the transformation temperature and time. The hue of passivation treatment film can refer to the annealing color of alloy pipe, and the main parameters of ambient temperature and time of heat treatment process can be selected.Kisquia,Welded pipe refers to the steel pipe with joints on the surface, which is welded after the steel strip or steel plate is bent and deformed into circular, square and other shapes. The blank used for welded pipe is steel plate or steel strip. How can the steel strip or steel plate be welded together and what are the welding skills?Defects of alloy pipe and solutions:Volos,Function of I-beam: where is I-beam mainly used?Metallization: refers to the process of penetrating metal atoms into the surface layer of alloy steel pipe. It is to alloy the surface layer of steel so that the workpiece surface has the characteristics of some alloy steel. Aluminizing, chromizing, boronizing, siliconizing and so on are commonly used in production. Peak crack

Plan scheme : high carbon steel with carbon content exceeding .% and alloy pipe with chromium content not less than %During the heating and cooling process of structural welded pipe workpiece, due to the inconsistent cooling speed and time of surface layer and core layer, the temperature difference will be formed, resulting in uneven volume expansion and contraction, resulting in stress, namely thermal stress. Under the action of thermal stress, the starting temperature of the surface layer is lower than that of the core layer, and the shrinkage is greater than that of the core layer, making the core layer stretch. At the end of cooling, the surface layer is compressed and the core is stretched because the cooling volume contraction of the core cannot be carried out freely. That is, under the action of thermal stress, the surface of the workpiece is compressed and the core is pulled.The core of C-section steel is the structural system of braced frame. More than half of such senior managers in China are the former. Unfavorable to earthquake resistance. Hydraulic power, and the power is large,KisquiaAlloy tube 12Cr1MoV, generally about KW, which is similar to the plate shearing and bending machine. The general control process is complex, and PLC control is mostly used.Inspection items,The shape of I-beam is similar to that of H-beam. What is the difference between them?When selecting I-beam in structural design, chemical properties, weldability and structural size.Function of I-beam: where is I-beam mainly used?

I-beam is a kind of economical section steel with better section mechanical properties. Its characteristics are as follows:High quality brand,Generally, the process of pickling and passivation will be carried out for alloy pipes but the alloy pipes after pickling and passivation are very easy to rust. Therefore, the way to find a solution to wiredrawing corrosion is 'grinding and polishing'. Due to grinding and polishing, there is no harm to carry out hot galvanizing in the middle and later stage.How to judge the quality of seamless pipe?The crack mainly occurs at -mm from the edge of the alloy pipe. The shape is several parallel vertical cracks of different sizes. The regularity is that the thicker the specification and model of the alloy pipe is The wider the width, the more serious the disadvantages.Kisquia, or drying treatment or air drying can be selected.Requirements of alloy tubes for low and medium pressure boilersAccording to the theory of steel structure, the I-beam flange should be stressed, that is, the I-beam should be standing rather than lying down.