304 is a versatile stainless steel, it is widely used to produce good overall performance (corrosion resistance and formability) of equipment and parts. 304 stainless steel is a grade produced in accordance with the ASTM standard stainless steel. 304 equivalent to China's 0Cr19Ni9 (0Cr18Ni9) stainless steel. 304 19% chromium, 9% nickel. 304 is the most widely used stainless steel, heat resistant steel, practical steel, Chinese steel industry. For food production equipment, and past chemical equipment, nuclear energy. Use of 304 stainless steel pipe as heat-resistant stainless steel is the use of food equipment, chemical equipment in general, nuclear industrial equipment. 304 stainless steel rust resistance than the 200 series stainless steel stronger. High temperature also relatively good, can be high to 1000-1200 degrees. 304 stainless steel with excellent corrosion resistance between performance and good resistance to intergranular corrosion. 304 stainless steel material concentration ≤ 65% below the boiling temperature of nitric acid, with strong corrosion resistance. Alkali solution and most organic and inorganic acids also has good corrosion resistance. Corrosive chemicals in the air or in a high-alloy steel resistant to corrosion, stainless steel is a beautiful surface and good corrosion resistance, without going through the plated surface treatment, and play inherent in surface properties of stainless steel, for use in multi- An aspect of steel, stainless steel is often called. Representative of the performance of 13 chrome steel, 18-8 chrome-nickel steel alloy. Stainless steel pipe weight formula: [(OD - Wall Thickness) * Thickness] * 0.02491 = kg / m (weight per meter) 304 304 stainless steel tube stainless steel tube categories classification there are many, the first seamless and straight seam welded steel pipe, followed by the basic structure of the classification is 304 stainless steel pipes and industrial fluid transport 304 stainless steel tube. There is a division of the national standard, Japanese standard, American standard, etc..