... products are widely used in many industries,such as petroleum,chemistry,architecture,food,pharmacy,electric power,and boiler heat exchangers.Diameter6-630mmThickness0.5 ... -60mmStandardsAISI/ASTM/GB/DIN/JISGrade301,321,304,304L,316,316L,317,317L,310SApplicationPetroleum ,Chemical ,Medical equipment,boiler heat ...