... ,316L OD :6~429mm wall thickness :1~8mm stainless steel round tube 304Grade :201 202 304 304JI 321 316L 310SStanard : AISI JISSize : Φ6 ... *2, Φ18*2, Φ20*2, Φ22*3, Φ25*2.5, Φ27*3, Φ32*3, Φ34*3, Φ38*3, Φ42*3, Φ45 ... , the protection of pipe end, anyway according to customers' requirment. 304 stainless steel round tube