... and THK: 1 - 20mm 2) Grades: 304, 304L, 316, 316L, 430 Features:1) Specifications: OD: 10- 219mm and THK: 1- 20mm2 ... ) Grades: 304, 304L, 316, 316L, 317, 310, 310S and 321,430,420,410,403,405 3) Made according to the standards ... , environmental protection and boiler heat exchangerPacking: wooden box, knit bag 430 Stainless Steel Seamless Pipes