The flange of H-beam is of equal thickness, including rolling section and combined section composed of three plates welded. All I-beams are rolled sections. Due to poor production technology, the inner edge of the flange has a slope of : The rolling of H-beam is different from that of ordinary I-beam. Only one set of horizontal rolls is used. Because its flange is wide and has no inclination (or the inclination is very small), a group of vertical rolls must be added for rolling at the same time. Therefore, its rolling process and equipment are more complex than ordinary rolling mills. The maximum height of rolled H-section steel that can be produced in China is mm, which exceeds the welded composite section.Performance parameters and application scope of I-beamSigtepek,General welded pipe: General welded pipe is used to transport low-pressure fluid. It is made of qa, qa and QA steel. It can also be made of other mild steel that is easy to weld. Water pressure, zigzag, flattening and other tests shall be carried out for steel pipes, and there are certain requirements for surface quality. Generally, the delivery length is -m and fixed length (or double length) delivery is often required. The standard of welded pipe is expressed in nominal diameter (mm or inch). The nominal diameter is different from the actual. Welded pipe can be divided into general steel pipe and thickened steel pipe according to the specified wall thickness, and steel pipe can be divided into threaded and non threaded according to the way of pipe end.I-beam has the dual properties of high hardness and toughness materials. Compared with other engineering wear-resistant materials in China, such as various alloy steel plates, cast wear-resistant plates,Sigtepekthree hundred and twenty-five × 10 welded pipe manufacturer, cast stones, rubber, polyurethane, etc., it has irreplaceable comprehensive excellent properties.Elmina,Alloy pipe can be divided into round steel pipe and special-shaped steel according to different cross-sectional area. Because the circular area is large on the premise of the same side length, a large amount of liquid can be transported with an annular tube. In addition, when the circular cross section bears the internal or external axial working pressure, the bearing force is more symmetrical. Therefore, most seamless steel pipes are round steel pipes. H-section steel is an economic section steel with better mechanical properties than I-section steel. It is named because its section shape is the same as the English letter 'H'. The flange of hot rolled H-beam is wider than that of I-beam, H-beam is lighter than I-beam.It is widely used in various fields of national economic construction such as buildings, bridges, power stations, oil drilling platforms, vehicles, highways, subways, steel structure plants and large warehouses

Defects of alloy pipe and solutions:Square; Round; Fillet. Small longitudinal crackWorkshop costPlan scheme : for high carbon steel with carbon content of more than .% and high chromium alloy pipe with chromium content of no less than %, the interval is min.The shape of small longitudinal crack on the surface of alloy pipe is less than mm The overall width is less than mm The depth is lower than .mm. The small length of repair welding is mm; The raw material shall not exceed mm after grinding by welding edge.

Application characteristics of I-beam:Sincere service, which is made of Q hot-rolled or cold-rolled strip or coil as the base material, cold bending and high-frequency welding. In addition to wall thickness thickening, the corner size and edge flatness of hot rolled extra thick wall galvanized pipe reach or even exceed the level of resistance welding cold formed galvanized pipe.What are the uses of I-beam?Sigtepek,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,SigtepekHow much is Q345B I-beam per ton,SigtepekQ345B seamless pipe manufacturer, X-ray or ultrasonic testing sampling inspection (%) shall be carried out. The defects can be removed by grinding with sand wheel, but the remaining wall thickness must be within the allowable standard.I-beam