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槽鋼分普通槽鋼和輕型槽鋼。熱軋普通槽鋼的規(guī)格為5-40#。經(jīng)供需雙方協(xié)議供應(yīng)的熱軋變通槽鋼規(guī)格為6.5-30#。槽鋼按形狀又可分為4種：

冷彎等邊槽鋼、冷彎不等邊槽鋼、冷彎內(nèi)卷邊槽鋼、冷彎外卷邊槽鋼。槽鋼的材質(zhì)為Q235A碳素鋼。槽鋼的表面質(zhì)量及幾何形狀的允許偏差在標(biāo)準(zhǔn)中

有具體規(guī)定。一般要求表面不 得存在使用上有害的缺陷，不得有顯著的扭轉(zhuǎn)，規(guī)定槽鋼波浪彎（鐮刀彎）的允許值及各規(guī)格槽鋼截面形狀的有關(guān)參數(shù)

（h，b，d，t等）的數(shù)值、允差值。槽鋼幾何形狀不正確的主要表現(xiàn)是：塌角、腿擴(kuò)及腿并等。

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

hot rolled flexible tank steel supplied by supply and demand is 6.5-30 #.Slot steel can be divided into four kinds according to the shape: cold bent equal edge

groove steel, cold bending unequal edge groove steel, cold bend inner coil edge groove steel, cold bend outer coil edge groove steel.The trough steel is made of

Q235A carbon steel.The allowable deviation of the surface quality and geometry of the slot steel are specified in the standard.Generally, the surface is not

required with harmful defects in use, no significant torsion, specify the allowable value of trough steel wave bend (sickle bend) and the relevant parameters of

trough steel section shape (h, b, d, t, etc., etc.) of each specification.The main performance of incorrect groove steel geometry is: collapse Angle, leg expansion

and leg parallel, etc.