Requirements of alloy tubes for low and medium pressure boilers→ 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.Arcai,Seamless pipe Frame line crackIztacalco,According to the national standard of hot rolled H-section steel in China (GB / t-, H-section steel is divided into narrow flange, wide flange and steel pile, HK and Hu respectively. Narrow flange H-section steel is suitable for beams or compression bending members, while wide flange H-section steel and H-section steel piles are suitable for axial compression members or compression bending members. Compared with H-section steel, W, IX and iy are not as good as H-section steel under the premise of equal weight.I-beam is a kind of economical section steel with better section mechanical properties. Its characteristics are as follows: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, 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. Spiral welded steel pipe (sy- for pile is made of hot-rolled steel strip coil as pipe blank, often warm spiral forming, double-sided submerged arc welding or high-frequency welding. It is used for foundation pile of civil building structure, wharf, bridge, etc.I-beam is a long strip steel with groove section, which belongs to carbon structural steel for construction and machinery. It is a section steel with complex section, and its section shape is groove shape. China&#;s imports of I-beams are greater than its exports. The main producing areas are Tangshan Iron and steel, Baotou Iron and steel, Shangang,ArcaiWhat percentage of galvanized pipe is 25, huangte Maanshan Iron and steel, Xuanhua Iron and steel, Japan iron and steel, etc.Credit guarantee,Methods of exerting efficiency in application of C-section steel The small length of repair welding is mm; The raw material shall not exceed mm after grinding by welding edge. Direct rolling pass system. The direct rolling pass system refers to the pass system in which the two open legs of the I-beam pass are on the same side of the roll axis at the same time, and the waist is parallel to the roll axis.

→ wide flange and large lateral stiffness. Strong bending resistance.safety requirements , Peak crackThird,ArcaiDirect sales of welded pipe manufacturers, between the flange on the inner side of the sidewalk beam and the old bridge deck, the widening part of the bridge deck is poured with concrete, the bridge deck expansion joint is set at the center of the cantilever beam top, and the carriageway pavement is extended and erected on the cantilever beam.Its heat sealing effect is remarkable. It can be directly buried immediately, which can not only save resources, but also reduce consumption, not occupy the natural environment, but also purify the environment. The transportation of gas can meet the requirements of long-distance transportation, prevent actual operation and maintenance meet the requirements of thermal insulation and cold protection,ArcaiHow much is 300x150 I-beam, 1 ton, reduce heating equipment, unique and convenient installation, and reduce the construction cycle time of the project. On the whole, it is more convenient to use. It can also be used for the transportation of floor heating and hot springs.Arcai, physical and chemical properties, in addition to the reasonable selection of materials and forming process, heat treatment process is often necessary. In addition, the mechanical, physical and chemical properties of aluminum, copper, magnesium, titanium and their alloys can be changed by heat treatment to obtain different service properties.After isothermal quenching treatment, the I-steel structure can increase the service area by %, reduce the self weight of the structure by % - %, and reduce the structural design internal force.