济南型钢是一种有一定截面形状和尺寸的条型钢材,是钢材四大品种(板、管、型、丝)之一。根据断面形状，型钢分简单断面型钢和复杂断面型钢（异型钢）。前者指方钢、圆钢、扁钢、角钢、六角钢等；后者指工字钢、槽钢、钢轨、窗框钢、弯曲型钢等。

Jinan section steel is a kind of strip steel with a certain section shape and size, which is one of the four major varieties of steel (plate, pipe, shape, wire). According to the section shape, the section steel can be divided into simple section section steel and complex section section steel (special section steel). The former refers to square steel, round steel, flat steel, angle steel, hexagonal steel, etc; The latter refers to I-beam, channel steel, steel rail, window frame steel, bending steel, etc.

按照钢的冶炼质量不同，型钢分为普通型钢和优良型钢。

According to different smelting quality of steel, section steel can be divided into ordinary section steel and excellent section steel.

普通型钢按现行金属产品目录又分为大型型钢、中型型钢、小型型钢。普通型钢按其断面形状又可分为工字钢、槽钢、角钢、圆钢等。

According to the current metal product catalog, ordinary section steel can be divided into large section steel, medium section steel and small section steel. Ordinary section steel can be divided into I-beam, channel steel, angle steel, round steel, etc. according to its section shape.

大型型钢：

Large section steel:

大型型钢中工字钢、槽钢、角钢、扁钢都是热轧的，圆钢、方钢、六角钢除热轧外，还有锻制、冷拉等。

In large section steel, I beam, channel steel, angle steel and flat steel are all hot rolled. In addition to hot rolling, round steel, square steel and hexagonal steel are also forged and cold drawn.

工字钢、槽钢、角钢广泛应用于工业建筑和金属结构，如厂房、桥梁、船舶、农机车辆制造、输电铁塔，运输机械，往往配合使用。扁钢在建筑工地中用作桥梁、房架、栅栏、输电船舶、车辆等。圆钢、方钢用作各种机械零件、农机配件、工具等。

I-beam, channel steel and angle steel are widely used in industrial buildings and metal structures, such as factory buildings, bridges, ships, agricultural machinery and vehicle manufacturing, power transmission towers, and transportation machinery, often used together. Flat steel is used for bridges, frames, fences, power transmission ships, vehicles, etc. in construction sites. Round steel and square steel are used as various mechanical parts, agricultural machinery accessories, tools, etc.

中型型钢：

Medium section steel:

中型型钢中工、槽、角、圆、扁钢用途与大型型钢相似。

The medium, groove, angle, round and flat steel of medium section steel are similar to those of large section steel.

小型型钢：

Small section steel:

小型型钢中角、圆、方、扁钢加工和用途与大型型钢相似，小直径圆钢常用作建筑钢筋。

The processing and use of angle, round, square and flat steel in small section steel are similar to those of large section steel. Small diameter round steel is often used as building reinforcement.

型钢应用特点：

Features of profile steel application:

根据不同用途合理分配截面尺寸的高宽比，具有优良的力学性能和优越的使用性能。

The ratio of height to width of the section size is reasonably distributed according to different uses, which has excellent mechanical properties and superior service performance.

设计风格灵活、丰富。在梁高相同的情况下，钢结构的开间可比混凝土结构的开间大50%，从而使建筑布置更加灵活。

The design style is flexible and rich. With the same beam height, the bay of steel structure can be 50% larger than that of concrete structure, which makes the building layout more flexible.

结构自重轻。与混凝土结构自重相比更轻，结构自重的降低，减少了结构设计内力，可使建筑结构基础处理要求低，施工简便，造价降低。

The self weight of the structure is light. Compared with the dead weight of concrete structure, it is lighter. The reduction of the dead weight of the structure reduces the internal force of the structure design, which can make the foundation treatment requirements of the building structure low, the construction simple, and the cost reduced.

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