55世纪　　不锈钢方管是一种中空的长条钢材，因为截面是正方形所以叫做方管。大量用作输送流体的管道，如石油、天燃气、水、煤气、蒸气等，另外，在搞弯、抗扭强度相同时，重量较轻，所以也广泛用于制造机械零件和工程结构。

　　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.

　　什么是不锈钢方管

55世纪　　What is stainless steel square tube

　　不锈钢方管是一种中空的长条钢材，因为截面是正方形所以叫做方管。大量用作输送流体的管道，如石油、天燃气、水、煤气、蒸气等，另外，在搞弯、抗扭强度相同时，重量较轻，所以也广泛用于制造机械零件和工程结构。

　　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.

　　不锈钢方管性能

　　Performance of stainless steel square tube

　　金属在大气中都可与氧气反应在表面形成氧化膜，普通碳钢上形成的氧化铁会继续进行氧化，使锈蚀不断扩大，最终形成孔洞。

55世纪　　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.

　　这可以利用油漆或耐氧化的金属进行 电镀来保护碳钢表面，但这种保护层只是一种薄膜，如果保护层被破坏，下面的钢便又开始锈蚀。

55世纪　　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.

　　不锈钢管是否被锈蚀与钢中的铬含量有关，钢中的铬含量达到12%时。

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

　　适用条件

55世纪　　Applicable conditions

　　在大气中，不锈钢管表面生成了一层钝化的、致密的富铬氧化物而保护表面，可防止进一步再氧化。

　　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.

55世纪　　这种氧化层极薄，透过它可以看到钢表面的自然光泽，使不锈钢具有独特的表面。

55世纪　　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.

　　如果铬膜一旦破坏，钢中的铬与大气中的氧重新生成钝化膜，继续起保护作用。

55世纪　　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.

　　在一些特殊环境下，不锈钢也会出现某些局部腐蚀而失效，但不锈钢与碳钢不同，不会出现均匀腐蚀而失效，因此腐蚀余量对不锈钢管来说没有意义。

　　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.

　　不锈钢方管用途

　　Application of stainless steel square tube

　　在工业上不锈方管主要用来做一些输送管道，当然在建筑行业中它的运用就更为广泛了，比如用作楼梯扶手，护窗，栏杆，马路隔断等等，目前，许多的产品都用到了不锈钢管，例如自行车，医疗器械，汽车等等。

　　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.

　　不锈钢方管优点

55世纪　　Advantages of stainless steel square tube

55世纪　　不锈方管被广泛的使用，当然也是有一定的原因的，其中最主要的就是其使用寿命很长，具有很好的抗腐蚀性，并且本身自重较轻，但强度很大，为产品减少了负重，增加了其承受能力，让消费者用得更加的放心。

55世纪　　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.

　　不锈方管规格介绍

55世纪　　Introduction to Stainless Square Tube Specifications

　　不锈钢管的规格一般只看其内径以及壁厚，其长度都是可以根据消费者的需求决定的，市面上常见的不锈钢管的规格大致有：内径6.0mm以上，壁厚13mm以下；内径大于30mm，壁厚大于1.2mm;内径大于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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