yyrail

I-beam is a standard structural steel shape, which can be used as the key frame of various structures in the metal construction industry. For example, I-beams are used to build bridges, parking lots, skyscrapers, hospitals and so on. But what makes them such high-quality building materials?Stru…

Fishtail plates, also called rail joints, are used to join two rails together. The word "fish" comes from the French word "fiche", which means a nail, and "fiche" comes from the Old French word " fichier", which means to fasten. fichier", which means to fasten, so fish plate means to be accusto…