ASTM A53 GR.B hot dip galvanized seamless steel pipe

　　stainless steel screwed pipe fitting is the most widely used of a chromium - nickel stainless steel, has good corrosion resistance, heat resistance, low temperature strength and mechanical properties. In the atmosphere of corrosion-resistant, if it is industrial atmosphere or heavily polluted areas, you need to clean in time to avoid corrosion. 304 stainless steel is produced in accordance with the United States ASTM standards of a grade of stainless steel. 304 is equivalent to China's 0Cr19Ni9 (0Cr18Ni9) stainless steel. 304 is the most widely used stainless steel, heat-resistant steel.