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槽钢分普通槽钢和轻型槽钢。热轧普通槽钢的规格为5-40#。经供需双方协议供应的热轧变通槽钢规格为6.5-30#。槽钢主要用于建筑结构、幕墙工

程、机械设备和车辆制造等,还会经常和工字钢配合使用。槽钢按形状又可分为4种：冷弯等边槽钢、冷弯不等边槽钢、冷弯内卷边槽钢、冷弯外卷

边槽钢。依照钢结构的理论来说，应该是槽钢翼板受力，就是说槽钢应该立着，而不是趴着。在相同的高度下，轻型槽钢比普通槽钢的腿窄、腰

薄、重量轻。18 ―40 号为大型槽钢，5 ―16 号槽钢为中型槽钢。

Trough steel is divided into ordinary rough steel and light trough steel. The specification of hot-rolled ordinary tank steel is 5-40 #. The specification of hot

rolled flexible tank steel supplied by the supply and demand parties is 6.5-30 #. Trough steel is mainly used for building structure, curtain wall engineering,

mechanical equipment and vehicle manufacturing, and will often be used with I-steel. Trough steel can be divided into four types: cold curved equal side

groove steel, cold curved unequal side groove steel, cold curved inner rolling side groove steel, cold curved outer rolling side groove steel. According to the

theory of steel structure, it should be the trough steel wing force, that is, the channel steel should be standing, not lying down. At the same height, the light

trough steel is narrower than the legs, waist and weight of ordinary tank steel. No.18-40 is large tank steel, no. 5-16 channel steel is medium tank steel.