Hot-rolled H-beam

Hot-rolled H-beams are economical and highly efficient sections with a cross-section shaped like the letter "H". They are produced by rolling steel billets at high temperatures.

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Hot-rolled H-beam

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Details Introduction

Hot-rolled H-beams are economical and highly efficient sections with a cross-section shaped like the letter "H". They are produced by rolling steel billets at high temperatures.

Classification According to the ratio of flange width to height, they can be classified into three types: wide flange H-beams (HW), medium flange H-beams (HM), and narrow flange H-beams (HN). HW type H-beams have approximately equal height and flange width, mainly used for steel core columns in reinforced concrete frame structures and columns in steel structures; HM type H-beams have a height to flange width ratio of approximately 1.33-1.75, commonly used as steel frame columns in steel structures, and can also be used as frame beams in frame structures subjected to dynamic loads; HN type H-beams have a height to flange width ratio greater than or equal to 2, mainly used for beams.

Features

High structural strength Compared with I-beams, they have a larger section modulus, saving 10%-15% of metal under the same load-bearing conditions.
Flexible design style With the same beam height, the span of steel structures can be 50% larger than that of concrete structures, making building layout more flexible.
Light structural weight Compared with concrete structures, they are lighter, reducing the requirements for building foundation treatment, simplifying construction, and lowering costs.
Good seismic performance Steel structures mainly using hot-rolled H-beams have good plasticity and ductility, high structural stability, and are suitable for building structures subjected to large vibrations and impact loads. They have strong resistance to natural disasters and perform well in building structures in areas with frequent earthquakes.
Increased usable area Compared with concrete structures, steel structures have smaller column cross-sectional areas, increasing the effective usable area of the building by 4%-6%.
Low production cost Compared with welded H-beams, they significantly save labor and materials, reduce the consumption of raw materials, energy, and labor, have low residual stress, and have good appearance and surface quality.
Convenient construction Easy for machining, structural connection, and installation, and easy to dismantle and reuse. The construction speed of steel structures using hot-rolled H-beams is about 2-3 times that of concrete structures, and the capital turnover rate is significantly improved.
Excellent environmental performance Compared with concrete, dry construction can be adopted, producing less noise and dust; less soil excavation is required for foundation construction, causing less damage to land resources; and when the service life of the building structure expires, the amount of solid waste generated from demolition is small, and the recycled value of scrap steel is high.

Materials and Specifications

Materials The main materials include Q235B, SM490, SS400, Q345, Q345B, etc.
Specifications Hot-rolled H-beams come in various specifications and models. Their external dimensions mainly include width, height, flange thickness, and web thickness. The requirements for these dimensions are clearly specified in national standards and can be selected and designed according to specific project needs.

Application Fields

Construction field Widely used in beam and column components of steel structures in industrial and civil buildings, such as frame structures of factories and high-rise buildings, and can also be used for stairs, roof trusses, and load-bearing walls.
Bridge field Can be used for cross beams, supports, etc., in bridge structures, and is a commonly used material for large-span steel bridge components.
Mechanical manufacturing field Often used in the support structures of mechanical equipment and the processing of metal components, such as the bases and supports of large equipment.
Mining engineering field Can be used for mine support in mining engineering, capable of withstanding complex stress environments underground.
Other fields It can also be used in the structural design of industrial equipment in the petrochemical and power industries, frame structures in shipbuilding, main beams and supports for trains and automobiles, port conveyor belts, and highway guardrail supports. Applications in the photovoltaic industry
Photovoltaic brackets This is the main application area of hot-rolled H-beams in the photovoltaic industry. Whether it is a large-scale ground-mounted centralized photovoltaic power station or a distributed photovoltaic power generation project, such as rooftop photovoltaics, fishery-photovoltaic integration, and agriculture-photovoltaic integration projects, the support system often uses hot-rolled H-beams. For example, in the Dongying Huiyang 400MW fishery-photovoltaic integration project, the columns use hot-rolled H-beams instead of the high-frequency welded H-beams commonly used in the industry to ensure that the tracking brackets can operate safely for 25 years.
Other structures of photovoltaic power stations In photovoltaic power stations, in addition to the brackets that directly support the photovoltaic components, some auxiliary structures, such as the building structures of substations and distribution rooms, and brackets used to fix cable trays and pipelines, may also use hot-rolled H-beams.