不銹鋼方管是一種中空的長條鋼材，因為截面是正方形所以叫做方管。大量用作輸送流體的管道，如石油、天燃氣、水、煤氣、蒸氣等，另外，在搞彎、抗扭強度相同時，重量較輕，所以也廣泛用于制造機械零件和工程結構。

　　Stainless steel square tube is a hollow long strip of steel, called square tube because of its square cross-section. Pipelines widely used for transporting fluids, such as oil, natural gas, water, coal gas, steam, etc. In addition, they are lighter in weight when bent and have the same torsional strength, so they are also widely used in the manufacture of mechanical parts and engineering structures.

　　什么是不銹鋼方管

　　What is stainless steel square tube

　　不銹鋼方管是一種中空的長條鋼材，因為截面是正方形所以叫做方管。大量用作輸送流體的管道，如石油、天燃氣、水、煤氣、蒸氣等，另外，在搞彎、抗扭強度相同時，重量較輕，所以也廣泛用于制造機械零件和工程結構。

　　Stainless steel square tube is a hollow long strip of steel, called square tube because of its square cross-section. Pipelines widely used for transporting fluids, such as oil, natural gas, water, coal gas, steam, etc. In addition, they are lighter in weight when bent and have the same torsional strength, so they are also widely used in the manufacture of mechanical parts and engineering structures.

　　不銹鋼方管性能

　　Performance of stainless steel square tube

　　金屬在大氣中都可與氧氣反應在表面形成氧化膜，普通碳鋼上形成的氧化鐵會繼續進行氧化，使銹蝕不斷擴大，最終形成孔洞。

　　Metals can react with oxygen in the atmosphere to form oxide films on their surfaces. The iron oxide formed on ordinary carbon steel will continue to oxidize, causing corrosion to expand and ultimately forming pores.

　　這可以利用油漆或耐氧化的金屬進行 電鍍來保護碳鋼表面，但這種保護層只是一種薄膜，如果保護層被破壞，下面的鋼便又開始銹蝕。

　　This can be achieved by electroplating with paint or oxidation resistant metals to protect the surface of carbon steel, but this protective layer is only a thin film. If the protective layer is damaged, the underlying steel will start to rust again.

　　不銹鋼管是否被銹蝕與鋼中的鉻含量有關，鋼中的鉻含量達到12%時。

　　Whether stainless steel pipes are corroded is related to the chromium content in the steel, which reaches 12%.

　　適用條件

　　Applicable conditions

　　在大氣中，不銹鋼管表面生成了一層鈍化的、致密的富鉻氧化物而保護表面，可防止進一步再氧化。

　　In the atmosphere, a passive and dense chromium rich oxide layer is formed on the surface of stainless steel pipes to protect the surface and prevent further oxidation.

　　這種氧化層極薄，透過它可以看到鋼表面的自然光澤，使不銹鋼具有獨特的表面。

　　This type of oxide layer is extremely thin, through which the natural luster of the steel surface can be seen, giving stainless steel a unique surface.

　　如果鉻膜一旦破壞，鋼中的鉻與大氣中的氧重新生成鈍化膜，繼續起保護作用。

　　If the chromium film is damaged, the chromium in the steel will react with the oxygen in the atmosphere to form a passivation film, which will continue to provide protection.

　　在一些特殊環境下，不銹鋼也會出現某些局部腐蝕而失效，但不銹鋼與碳鋼不同，不會出現均勻腐蝕而失效，因此腐蝕余量對不銹鋼管來說沒有意義。

　　In some special environments, stainless steel may also experience localized corrosion and failure, but unlike carbon steel, stainless steel does not experience uniform corrosion and failure, so corrosion allowance is meaningless for stainless steel pipes.

　　不銹鋼方管用途

　　Application of stainless steel square tube

　　在工業上不銹方管主要用來做一些輸送管道，當然在建筑行業中它的運用就更為廣泛了，比如用作樓梯扶手，護窗，欄桿，馬路隔斷等等，目前，許多的產品都用到了不銹鋼管，例如自行車，醫療器械，汽車等等。

　　Stainless steel square pipes are mainly used in industry to make some conveying pipelines. Of course, their application is even more extensive in the construction industry, such as being used as stair handrails, window guards, railings, road partitions, etc. Currently, many products use stainless steel pipes, such as bicycles, medical equipment, cars, and so on.

　　不銹鋼方管優點

　　Advantages of stainless steel square tube

　　不銹方管被廣泛的使用，當然也是有一定的原因的，其中最主要的就是其使用壽命很長，具有很好的抗腐蝕性，并且本身自重較輕，但強度很大，為產品減少了負重，增加了其承受能力，讓消費者用得更加的放心。

　　Stainless steel square tubes are widely used, of course, for certain reasons, the most important of which is their long service life, good corrosion resistance, and light weight, but with high strength, reducing the load on the product and increasing its load-bearing capacity, making consumers feel more at ease when using them.

　　不銹方管規格介紹

　　Introduction to Stainless Square Tube Specifications

　　不銹鋼管的規格一般只看其內徑以及壁厚，其長度都是可以根據消費者的需求決定的，市面上常見的不銹鋼管的規格大致有：內徑6.0mm以上，壁厚13mm以下；內徑大于30mm，壁厚大于1.2mm;內徑大于30mm，壁厚小于1.2mm等。

　　The specifications of stainless steel pipes are generally only based on their inner diameter and wall thickness, and their length can be determined according to the needs of consumers. The common specifications of stainless steel pipes on the market are: inner diameter of 6.0mm or more, wall thickness of 13mm or less; Inner diameter greater than 30mm, wall thickness greater than 1.2mm; Inner diameter greater than 30mm, wall thickness less than 1.2mm, etc.

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