stainless steel coil 1) Grade: 201, 202, 301,304.etc. 2) Surface ... ,141,159,2192)Square pipes - Outside dimensions(mm) : 10x10,12x12,15x15,17x17,18x18,19x19,20x20,22x22,23x23,24x24,25x25,28x28,30x30 ... : 30%T/T for deposit,70% for balance ASTM 304 stainless steel coil