The 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, 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.When selecting I-beam in structural design, reasonable I-beam shall be selected according to its mechanical properties, chemical properties,Granby6. How much is a ton of galvanized pipe, weldability and structural size.Granby,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.Xhy- series high hardness alloy I-beam; Undertake drawings and process wear-resistant pipes（ Φ ≥mm）； Undertake the processing and production of vulnerable parts of cement machinery; Welding technology consultation and service; The wear-resistant layer of alloy wear-resistant plate of high chromium heap welding flux cored wire series is mainly high chromium,GranbyAlloy pipe GH5188, as well as manganese, molybdenum, francium and other components. The alloy carbide formed has strong stability at high temperature.OlsztynApplication characteristics of I-beam:Generally, there are many passivation methods for alloy tubes, due to the relatively high and narrow section size, there is a large difference in the moment of inertia between the two main sleeves of the section. Therefore, it can only be directly used for members bent in the plane of their web or form lattice stress members. It is not suitable for axial compression members or members with bending perpendicular to the web plane, which makes it very limited in the scope of application.

→ compared with general section steel, it has the advantages of low cost high precision and small residual stress. It does not need expensive welding materials and weld detection, and saves about % of the manufacturing cost of steel structure.The pollution of the joint causes the welding cracking. The composite pipe welding is an accurate work. If it is not done well, it will not only waste resources, but also lead to work efficiency, rework and restart, and waste financial resources.I-beam has wide flange, thin web, many specifications and flexible use. It can save metal by % ~ % when used in various truss structures. Because the inner and outer sides of the flange are parallel and the edge end is at right angles, it is easy to assemble and combine into various components, which can save about % of the welding and riveting workload, greatly accelerate the construction speed of the project and shorten the construction period.Convenient and efficient, I-beam has no specific composition and performance series. Judged as failing.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, light I-beam and wide parallel leg I-beam (H-beam). The waist width of hot-rolled ordinary I-beam in China is ~, 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.

Plan scheme : Martensitic chromium alloy pipe and chromium alloy pipe with Cr composition exceeding %, without high carbon steel and high chromium alloy pipe. The aqueous solution contains % sodium cyanide % ~ % (volume ratio), the solution temperature is ~ ℃, and the solution time is min.management,Patented manufacturing process of I-beam: I-beam has become a new industrial standard for wear-resistant materials Because the zinc coating has excellent ductility, it can be formed by cold stamping, rolling, bending and so on without damaging the coating. Small longitudinal crackGranby,Alloy pipes can be used for heating (cooling) projects.b. The professional two-sided arc welding processing technology can complete the electric welding at a good position,GranbyHow much is 10 I-beam per meter, which is not easy to have the disadvantages of staggered joint, and it is very easy to manipulate the welding quality.→ compared with general section steel, it has the advantages of low cost high precision and small residual stress. It does not need expensive welding materials and weld detection, and saves about % of the manufacturing cost of steel structure.