鋼材批發公司的槽鋼分普通槽鋼和輕型槽鋼。熱軋普通槽鋼的規格為5-40#。經供需雙方協議供應的熱軋變通槽鋼規格為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、冷彎內卷邊槽鋼、冷彎外卷邊槽鋼。槽鋼的材質為Q235A碳素鋼。槽鋼主要用于建筑結構、幕墻工程、機械設備、車輛制造、固定盤柜和其它工業結構，槽鋼還經常和工字鋼配合使用。在使用中要求其具有較好的焊接、鉚接性能及綜合機械性能。

The channel steel of steel wholesale companies is divided into ordinary channel steel and light channel steel. The specifications of hot-rolled ordinary channel steel are 5-40 #. The specifications of hot-rolled flexible channel steel supplied through agreement between the supply and demand parties are 6.5-30 #. Channel steel can be divided into four types according to its shape: cold-formed equal edge channel steel, cold-formed unequal edge channel steel, cold-formed inner rolled edge channel steel, and cold-formed outer rolled edge channel steel. The material of the channel steel is Q235A carbon steel. Channel steel is mainly used in building structures, curtain wall engineering, mechanical equipment, vehicle manufacturing, fixed cabinets, and other industrial structures. Channel steel is often used in conjunction with I-beams. In use, it is required to have good welding, riveting performance, and comprehensive mechanical properties.

熱鍍鋅槽鋼，按鍍鋅工藝的不同可以分為熱浸鋅槽鋼和熱吹鍍鋅槽鋼，是將除銹后的鋼件浸入440~460℃左右融化的鋅液中，使鋼構件表面附著鋅層，從而起到防腐的目的。

Hot dip galvanized channel steel can be divided into hot-dip galvanized channel steel and hot-blown galvanized channel steel according to different galvanizing processes. It involves immersing the derusted steel parts in molten zinc at around 440~460 ℃ to attach a zinc layer to the surface of the steel components, thereby achieving the purpose of corrosion prevention.

鍍鋅槽鋼工藝流程：原料檢驗→酸洗→清洗→助鋅→烘干→鍍鋅→冷卻→鈍化→清洗→成品檢驗→檢驗打包等。

The process flow of galvanized channel steel: raw material inspection → acid washing → cleaning → zinc assistance → drying → galvanizing → cooling → passivation → cleaning → finished product inspection → inspection and packaging, etc.

按照習慣往往根據鍍前處理方法的不同把熱鍍鋅工藝分為線外退火和線內退火兩大類。

According to customs, hot-dip galvanizing processes are often divided into two categories based on different pre-treatment methods: offline annealing and online annealing.

線外退火就是熱軋或冷軋鋼進入熱鍍鋅作業線之前，先在抽底式退火爐或罩式退火爐中進行再結晶退火，這樣，鍍鋅線就不存在退火工序了。鋼材在熱鍍鋅之前須保持一個無氧化物和其他臟物存在的潔凈的純鐵活性表面。這種方法是先由酸洗的方法把經退火的表面氧化鐵皮清除，然后涂上一層由氯化鋅或由氯化銨和氯化鋅混合組成的溶劑進行保護，從而防止鋼材再被氧化。線內退火就是由冷軋或熱軋車間直接提供帶卷作為熱鍍鋅的原板，在熱鍍鋅作業線內進行氣體保護再結晶退火

Off line annealing refers to the recrystallization annealing of hot-rolled or cold-rolled steel in a bottomed annealing furnace or bell type annealing furnace before entering the hot-dip galvanizing line. In this way, there is no annealing process in the galvanizing line. Before hot-dip galvanizing, steel must maintain a clean, pure iron active surface free of oxides and other dirt. This method involves first removing the annealed surface iron oxide scale by acid washing, and then applying a layer of zinc chloride or a solvent composed of ammonium chloride and zinc chloride for protection to prevent the steel from being oxidized again. In line annealing refers to the gas protected recrystallization annealing of hot-dip galvanized raw plates directly provided by the cold rolling or hot rolling workshop as coils