According 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.Due to the relatively high and narrow section size of ordinary I-beam and light I-beam, the moment of inertia of the two main sleeves of the section is quite different,San Pedro cachaThe software for turning reinforcement is, which makes it very limited in the scope of application. The use of I-beam shall be selected according to the requirements of design drawings.San Pedro cacha, Chromium can improve the hardenability and wear resistance of steel and improve the corrosion resistance and oxidation resistance of steel The small length of repair welding is mm; The raw material shall not exceed mm after grinding by welding edge.Wichian Buri,X-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, gas heating steam and other general liquids, X-ray or ultrasonic testing sampling inspection (%) shall be carried out.C-section steel has uniform zinc layer,San Pedro cachaSeamless pipe manufacturer, strong adhesion, no zinc scar, no zinc leakage and high dimensional accuracy. All surfaces are wrapped by zinc layer and the zinc content on the surface is usually -g /? It has long service life, corrosion resistance and durability. It is a kind of stronger protection.Generally, the common ones are high temperature passivation or sodium cyanide passivation.

At present, there is still a big gap in the production technology of C-section steel between China and foreign countries. Silicon; it can improve the hardness of steel, but the plasticity and toughness decrease. Electrical steel contains a certain amount of silicon, which can improve the soft magnetic propertiesDue to the relatively high and narrow section size of ordinary I-beam and light I-beam, the moment of inertia of the two main axes of the section is quite different,Mixed Scabs are distributed periodically, and the situation after casting and rolling is significant through edge flame peeling crack inspection or billet scratch flame removal.H-section steel is an economic section high-efficiency profile with more optimized section area distribution and more reasonable strength weight ratio. It is named because its section is the same as the English letter 'H'. There is no slope on the inner side of the two outer edges of H-section steel, which is straight. This makes the welding and splicing of H-section steel simpler than I-section steel, better mechanical properties per unit weight, and can save a lot of materials and construction time.The specification of I-beam is expressed in cm of waist width. For example, the waist width of No. I-beam is cm. 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 ~ mm, expressed as No. ~ No., and the inclination of inner side wall of leg is : The pass system of rolled I-beam includes direct rolling pass system, cross rolling pass system and mixed pass system. In addition, I-beam can also adopt special rolling method.

The utility model has the advantages that the axial force of the roll is small,San Pedro cacha15CrMoG seamless pipe factory, the axial movement is small, the working inclined plane is not required, the pass occupies a small length of the roll body, and more passes can be matched under the condition of a certain length of the roll body.Quality improvement,I-beam can be divided into four types according to shape: cold-formed equal edge I-beam, cold-formed unequal edge I-beam, cold-formed inner crimping I-beam and cold-formed outer crimping I-beam.Thanks to a zinc tube, stand in the formation and development of painful microorganisms.Key technical characteristics of alloy pipeSan Pedro cacha, Small longitudinal crackStages needing attention in the production and manufacture of alloy tubesDry processing technology: after passivation treatment, parts shall be dried with air compression or hot gas, or drying treatment or air drying can be selected.