The 316 stainless steel tube is heated, pierced, sized, hot rolled and cut, and is widely used mainly in medical, food, and other industries. Because of its light weight, it is also used more in the manufacture of mechanical parts and various conventional weapons. For the 316 stainless steel tube on the purchase of many people can not begin, do not know how to make the purchase, now the opportunity of every thing in society have fake, for fear of buying fake, today I will teach you how to identify the 316 stainless steel tube manufacturers.
Dongguan City Suhang Metal Materials Co. Huizhou 304 stainless steel seamless pipeStarting batch: 1 kg
Price:$21
Jiangsu Lihua Hengye Metal Materials Co.
316 stainless steel pipe?304 stainless steel pipe spot
Starting batch: 1 ton
Price:$15,200
True and Fake Recognition:
International corrosion resistance of materials according to the annual corrosion rate is divided into three categories;
The first category of complete corrosion resistance, the corrosion rate is less than 0.1mm/year, high-quality stainless steel belongs to this type of material;
The second category of corrosion resistance, the corrosion rate of 0.1-1.0mm/year, belonging to the general stainless steel;
The third category is not corrosion resistant, and its corrosion rate is more than 1.0mm per year. The counterfeit stainless steel products found by the analysis, the corrosion rate of up to 9.67mm / year, is a serious corrosion resistance. When further analyzing the composition of the product, it was found that the chromium content of the product, which represents an important indicator of stainless steel, was only 10.03% and 7.1%, which is far lower than the minimum requirement of 10.5% for chromium in stainless steel.
In general, the chromium content of more than 10.5% of the iron-based alloys known as stainless steel, and these two products whose chromium content is far below this lower limit, the product is not stainless steel at all. The reason why the market will appear on the product, mainly producers of lucrative, the use of the people of stainless steel awareness of the lack of loopholes for counterfeiting. People generally believe that stainless steel is not magnetic, counterfeiters through a large number of manganese instead of nickel, change the composition of the product, to get a kind of non-magnetic, the cost is extremely low material, so as to achieve the purpose of seeking high profits.
The appearance of the product in the market circulation and the usual stainless steel is difficult to distinguish, at the same time, due to the lack of magnetism, coupled with unscrupulous dealers to take the trick of adulteration and mixing, to the consumer to identify the authenticity of a great deal of difficulty, the use of which will cause unforeseen consequences. In addition, this material uses a small amount of nickel, but can not play the role of nickel should be, is a waste of precious metals behavior, resulting in a certain waste of resources.
What is 316 pipe?
316 stainless steel tubing has a maximum carbon content of 0.03, and can be used in applications where welding cannot be annealed and where maximum corrosion resistance is required.
316 and 317 stainless steel (317 stainless steel properties see later) are molybdenum-containing stainless steel species.
The overall properties of this steel grade are superior to those of 310 and 304 stainless steels, and 316 stainless steel has a wide range of uses at high temperatures, when the concentration of sulfuric acid is less than 15% and more than 85%.
316 stainless steel plate aka 00Cr17Ni14Mo2 corrosion resistance: corrosion resistance is better than 304 stainless steel, in the production process of pulp and paper has good corrosion resistance.
316 stainless steel has better resistance to carbide precipitation than 316 stainless steel, available in the above temperature range.
316 stainless steel pipe characteristics
Properties and uses of stainless steel: serial number? Category Grade Characteristics and Uses.
1, austenitic shape ?1Cr17Mn6Ni5N ?section nickel steel species, instead of grade 1Cr17Ni7, cold working with magnetic. For railroad cars.
2, 1Cr18Mn8Ni5N?Nickel-saving steel, instead of grade 1Cr18Ni9.
3, 1Cr17Ni7?Cold-worked with high strength. Railroad cars, conveyor belts, bolts and nuts
4, 1Cr18Ni9?Cold-worked with high strength, but elongation is slightly worse than 1Cr17Ni7. Decorative parts for construction.
5, Y1Cr18Ni9?Improve cutting, ablation resistance. Most suitable for automatic lathe. Bolts and nuts
6, Y1Cr18Ni9Se?Improve cutting, ablation resistance. Most suitable for automatic lathe. Rivets, screws
7, 0Cr19Ni9 as stainless heat-resistant steel is most widely used, food equipment, general chemical equipment, atomic energy industry.
8, 00Cr19Ni11? Lower carbon content than 0Cr19Ni9 steel, superior resistance to intergranular corrosion, for the welded parts class without heat treatment.
9, 0Cr19Ni9N?In the grade 0Cr19Ni9 on the addition of N, increased strength, plasticity does not decrease. Make the thickness of the material is reduced. As a structure with strength parts.
10, 0Cr19Ni10NbN?In the grade 0Cr19Ni9 on the addition of N and Nb, with 0Cr19Ni9N and the same characteristics and uses.
11, 00Cr18Ni10N?In the grade 00Cr19Ni11 on the addition of N, with the same characteristics of the above grades, the use of the same as 0Cr19Ni9N, but better resistance to intergranular corrosion 12?1Cr18Ni.
12, and 0Cr19Ni9 compared to the hardening of the work. Spinning processing, special drawing, cold heading with 13?0Cr23Ni13?Corrosion resistance, heat resistance are better than 0Cr19Ni9 14?0Cr25Ni20?Engage in oxidation than 0Cr23Ni.
13, in fact, more as a heat-resistant steel used 15?0Cr17Ni12Mo2?In seawater and a variety of other media, corrosion resistance is better than 0Cr19Ni9 good. Mainly for pitting corrosion-resistant materials.
The above is about 316 stainless steel pipe manufacturers recommended and identify the true and false methods introduced, I hope it will help you. When we weld the stainless steel pipe should pay attention to the indoor, when also do a good job of air exchange measures, welding parts if there is rust, oil and other substances, should be dealt with cleanly, to prevent the emergence of air holes in the welding, there is also a very important point is that in the welding, DC voltage should be used in the positive polarity, the wire should be connected to the negative pole.
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