鋼材市場中鋼材的種類很多，如果要說哪一種鋼材是比較常用的話，那肯定就是鍍鋅方管了。

There are many kinds of steel in the steel market. If you want to say which kind of steel is more commonly used, it must be galvanized square tube.

鍍鋅方管是一種具以熱軋或冷軋鍍鋅帶鋼或鍍鋅卷板為坯料經冷彎曲加工成型后再經高頻焊接制成的方形截面形狀尺寸的空心方形的截面型鋼鋼管；或將事先做好的冷彎空心型鋼管再經熱浸鍍鋅加工而成的鍍鋅方矩管。濟南鍍鋅方管下面說說熱鍍鋅方管與冷鍍鋅方管區分方式。

Galvanized square pipe is a kind of hollow square cross-section steel pipe with square cross-section shape and size made by cold bending and high-frequency welding with hot-rolled or cold-rolled galvanized steel strip or galvanized coil plate as blank, or galvanized square pipe made in advance by hot-dip galvanizing. Jinan galvanized square tube below talk about the hot galvanized square tube and cold galvanized square tube distinguish way.

濟南鍍鋅方管

Jinan galvanized square pipe

熱鍍鋅方管有濕法、干法、鉛鋅法、氧化還原法等。

Hot dip galvanized square tube has wet method, dry method, lead-zinc method, oxidation-reduction method and so on.

不同熱鍍鋅方法的主要區別在鋼管酸浸清洗后，用什么方法活化管體表面提高鍍鋅質量。現生產中主要采用干法和氧化還原法，其特點見表。

The main difference of different hot dip galvanizing methods is how to activate the surface of pipe body to improve the quality of galvanizing after pickling. Dry process and redox method are mainly used in production, and their characteristics are shown in the table.

電鍍鋅的鋅層表面十分光滑致密、組織均勻;具有良好的力學性能和抗腐蝕能力；鋅耗比熱鍍鋅低60%～75%。

The results show that the surface of zinc coating is very smooth and compact, the structure is uniform, the mechanical properties and corrosion resistance are good, and the zinc consumption is 60% ~ 75% lower than that of hot dip galvanizing.

電鍍鋅在技術上有一定的復雜性，但對單面鍍層，內外表面鍍層厚度不同的雙面鍍層，以及薄壁管鍍鋅等皆須采用此法。

The technology of electro galvanizing is complex, but it is necessary to use this method for single side coating, double-sided coating with different thickness of inner and outer surface, and thin-walled tube galvanizing.