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304 stainless steel is a common stainless steel material, the density of 7.93 g/cm³; It is also known in the industry as 18/8 stainless steel, which means it contains 18% or more chromium and 8% or more nickel; High temperature resistance of 800℃, with good processing performance, high toughness, widely used in industry and furniture decoration industry and food and medical industry. But it should be noted that food grade 304 stainless steel compared with ordinary 304 stainless steel, its content index is more strict. For example: basically the international definition of 304 stainless steel is mainly containing chromium 18%-20% nickel 8%-10%, but food grade 304 stainless steel is containing chromium 18% and nickel 8%, allow a certain range of fluctuations, and limit the content of various heavy metals. In other words, 304 stainless steel is not necessarily food grade 304 stainless steel.

304 is a universal stainless steel, which is widely used in the manufacture of equipment and parts requiring good comprehensive properties (corrosion resistance and formability). To maintain the corrosion resistance inherent in stainless steel, the steel must contain at least 18% chromium and at least 8% nickel. 304 stainless steel is a brand of stainless steel produced in accordance with ASTM standards in the United States.

304 stainless steel is one of the most widely used chromium - nickel stainless steel, as a widely used steel, has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; Stamping, bending and other thermal processing, no heat treatment hardening phenomenon (use temperature -196℃ ~ 800℃). Corrosion resistance in the atmosphere, if it is an industrial atmosphere or heavily polluted area, it needs to be cleaned in time to avoid corrosion. Suitable for food processing, storage and transportation. It has good machinability and weldability. Plate heat exchanger, corrugated pipe, household articles (1, 2 class tableware, cabinet, indoor pipeline, water heater, boiler, bathtub), auto parts (windshield wipers, mufflers, mold products), medical appliances, building materials, chemistry, food industry, agriculture, ship parts, etc. The content of the strict control of 304 stainless steel, can also be called food grade 304 stainless steel.

304 stainless steel is widely used for curtain wall, side wall, roof and other architectural purposes, but in the highly corrosive industrial or Marine atmosphere, it is best to use 316 stainless steel. Stainless steel sliding door, people already realized the superiority that uses stainless steel in structural application adequately. Several design criteria include 304 and 316 stainless steel. Because "duplex" stainless steel 2205 combines excellent atmospheric corrosion resistance with high tensile strength and elastic limit strength, it is included in the European standard. In fact, stainless steel is manufactured in all standard metal shapes and sizes, and there are many special shapes as well. The most common products are made of sheet and strip steel, and special products are also made of medium thick plates, for example, hot-rolled structural sections and extruded structural sections. There are also round, oval, square, rectangular and hexagonal welded or seamless steel tubes and other forms of products, including sections, bars, wires and castings.

No.1 Before processing, we will use professional tools to check whether the thickness is up to the standard, whether there are scratches and bunkers on the surface, and whether there are waves on the edge. Any problem shall be regarded as unqualified and signed by the production department. No.2 Free charge spectrometer authoritative instrument testing, SGS, BV and other third-party testing can also be provide on large quantity for free charge.

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