guangdong supply galvanizing h-type steel steel beam beam galvanized anti-rust h-shaped steel machinable cutting punching i-shaped steel

The product specifications of H-beams are numerous, and there are several classification methods. (1) According to the flange width of the product, it can be divided into wide flange, medium flange, and narrow flange H-beams. The flange width B of wide flange and medium flange H-beams is greater than or equal to the web height H. The flange width B of narrow flange H-beams is approximately equal to half of the web height H. (2) According to the purpose of the product, it can be divided into H-beam girders, H-beam columns, H-beam piles, and extremely thick flange H-beam girders. Sometimes, parallel leg channel steel and parallel flange T-beams are also included in the scope of H-beams. Generally, narrow flange H-beams are used as beam materials, and wide flange H-beams are used as column materials. Accordingly, there are also names for beam type H-beams and column type H-beams. (3) According to the method, it can be divided into welded H-beams and rolled H-beams. (4) According to the size specification, it can be divided into large, medium, and small H-beams. Generally, products with web height H over 700mm are called large, those between 300mm and 700mm are called medium, and those less than 300mm are called small. By the end of 1990, the largest H-beam web height in the world was 1200mm, with a flange width of 530mm.