Galvanized C-shaped steel, hot-dip galvanized cable tray C-shaped steel, glass slot C-shaped steel, glass curtain wall C-shaped steel, cable trough C-shaped steel, reinforced C-shaped steel, double hug C-shaped steel, single-sided C-shaped steel, manual forklift C-shaped steel, C-shaped steel with unequal sides, C-shaped steel with straight edge, C-shaped steel with beveled edge, C-shaped steel with inner curling edge, C-shaped steel with inner beveled edge, C-shaped steel of roof (wall) purlin, C-shaped steel of automobile profile, C-shaped steel of expressway column, solar support C-shaped steel (21-80 series), formwork support C-shaped steel, precision C-shaped steel for equipment, etc.

C-shaped steel, because its cross-sectional shape is like the English letter C, and it belongs to the steel series, it is referred to as C-shaped steel, and its full scientific name is inner curling channel steel (because the channel steel appeared early, and the main body of this structure still conforms to the channel steel. Therefore, this kind of channel steel that looks like channel steel is called ××× channel steel, such as a few-shaped steel, which is called outer curling channel steel).

C-shaped steel purlins are divided into five specifications: 80, 100, 120, 140, and 160 according to different heights. The length can be determined according to the engineering design, but considering the conditions of transportation and installation, the total length generally does not exceed 12 meters.

American standard C-shaped channel steel is used in various steel structure construction fields, marine engineering fields, and energy fields. Available for American standard angle steel, American standard channel steel, American standard H-beam. It is also used in the field of overall structure construction of offshore oil platforms, LNG, oil refinery and other modular steel structures.

2. American standard steel classification:

-W-shaped wide flange H-beam W4-W44×13-593 -Symmetrical on both sides, the inner surface of the flange is roughly parallel.

-HP section steel-wide flange section steel HP8-18×36-204 -- usually used as load-bearing pile, its flange and web have the same nominal thickness, and its height and width are basically the same.

——S-shaped I-beam S3-S24×7.5-121 ——Double-sided symmetrical beam section steel with inner surface slope of flange about 16 2/3%.

——M-type H-beam M3-12.5×2.9-12.4——The double-sided symmetrical section steel that cannot be classified as "W", "S" or "HP" section steel.

—C-shaped channel steel C3-15×3.5-50 —channel steel with a slope of about 16% on the inner surface of the flange.

—MC channel steel MC3-18×7.1-58 —channel steel that cannot be classified as “C” steel.

—L-shaped angle steel L3/4-8×3/4-8×1/8-1 1/8 —Equilateral and unequal-sided angle steel.

3. Specifications Executive Standard: ASTM A6 General Requirements for Rolled Structural Steel Bars, Plates, Sections, and Sheet Piles

4. Material execution standard:

4.1ASTM A36 American Society for Testing and Materials Standard Standard Specification for Carbon Structural Steel

Material: ASTM A36

4.2ASTM A572 American Society for Testing and Materials Standard High-strength low-alloy niobium-vanadium structural steel

Material: ASTM A572Gr42, ASTM A572Gr50, ASTM A572Gr55, ASTM A572Gr60, ASTM A572Gr65

4.3ASTM A709 Structural Steel for Bridges

Material: A709 (Gr50W)

4.4 ASTM A992 Standard Specification for Structural Steel Sections

Material: A992

In China, according to the size of the section steel, hot rolled steel has become one of the most widely used materials in various basic constructions, such as rebar, axle and plowshare steel. Machinery, chemical industry, shipbuilding, mining, petroleum and railway sectors all use various types of hot-rolled steel. In construction engineering, hot-rolled steel is mainly used for industrial and civil houses, load-bearing skeletons of bridges (beams, columns, trusses, etc.), tower mast structures, high-voltage transmission line supports, etc.

H-beam has two production methods: hot-rolled forming and welding combined forming.

When the specifications and materials are the same, the hot-rolled H-beam can completely replace the welded H-beam, and the quality of the former is better than that of the latter. Under normal circumstances, in the structural design, hot-rolled H-beam should be used for multi-high-rise buildings. For light steel workshops with portal rigid frame structures, welded variable-section H-beams are used, and the steel consumption index is better, but the project cost cannot be The reason for saving how much is that the processing volume of hot-rolled H-beam is small and the construction period is slightly shorter. If the comprehensive economic benefits (including the project after the project is put into use) are calculated, in the case where the construction period plays a decisive role, the hot-rolled H-beam can be selected. However, when the construction period requirements are not strict or some image projects, the welded H-beam can be selected based on the principle of saving resources.

Application of steel structure industry

Hot-rolled galvanizing is mainly used in light steel structure houses and workshops in the steel structure industry. The main building skeletons are made of galvanized cold-formed steel, mainly C-shaped steel, Z-shaped steel, floor bearing plates and steel gutter manufacturing. Thickness specifications Mainly 1.5-3.5mm. Steel structure buildings are environmentally friendly "green building materials" due to their light weight, high strength, beautiful appearance, fast construction, less pollution, and good wind and earthquake resistance. In developed countries, the use of steel structures in factories and residential buildings has become the trend of building development. In my country, steel structures are still in their infancy and have great potential for development. According to data from Taiwan, the ratio of color-coated panels and hot-dip galvanizing in construction is generally 5:1. Based on this calculation, the demand of my country's hot-dip galvanized sheet market is about 600,000 tons. Since there is currently no domestic production capacity of hot-rolled galvanized sheet, and imported products are far from meeting the market demand, the most widely used galvanized sheet in the market is the steel strip galvanized sheet produced by small galvanizing plants. Due to technical limitations, its products cannot meet market demands in terms of surface quality, galvanized quantity control, corrosion resistance and mechanical properties.

Application of steel silo industry

Compared with the original traditional storage container, the steel silo has the advantages of fast construction speed, good air tightness, high strength, less floor space, low cost, novel structure and beautiful appearance. More than 80% of the steel used in the manufacture of the granary is hot-rolled galvanized steel strip with a thickness of 1.0-1.4mm and a width of 495mm (2.5-4mm accounts for 75%), the material is Q215-235, and the amount of galvanizing is >275g/square meter. The sewage treatment tanks of urban and industrial sewage treatment systems mainly use 4.0mm galvanized sheets.