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槽钢主要是由唐钢、包钢、莱钢、黄特、马钢、宝得、宣钢、济钢、日钢等几家钢厂生产。 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。进口槽钢标明实际规格尺寸及相关标准。槽钢的交货长度分定尺、倍尺二种，并在相应的

标准中规定允差值。国产槽钢的长度选择范围根据规格号不同分为5―12m、5―19m、6―19m三种。进口槽钢的长度选择范围一般为6―15m。

The trough steel is mainly produced by Tang steel, Baotou steel, steel, Huang, Maanshan, Baode, Xuande, Jigang, Japanese steel and other steel mills.

At the same height, light trough steel is narrower, waist and lighter than the legs of ordinary slot steel.No.18-40 are large groove steel, and grooves 5-16 are

medium groove steel.Import tank steel indicates the actual specifications and dimensions and relevant standards.The delivery length of slot steel is divided into

fixed rules and double feet, and the allowable value is specified in the corresponding standard.The length selection range of domestic tank steel is divided

into 5-12m, 5-19m and 6-19m according to the specification number.The length selection range of the inlet groove steel is generally 6-15m.